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Chapter 7 Special Conditions | 705.11(D) | A disconnecting means in accordance with Parts VI through VII of Article 230 shall be provided to disconnect all ungrounded conductors of a power production source from the conductors of other systems. [705.11(D)](https://2023.antflix.net#705.11(D)) | https://2023.antflix.net#705.11(D) |
Chapter 7 Special Conditions | 705.11(E) | All metal enclosures, metal wiring methods, and metal parts associated with the service connected to a power production source shall be bonded in accordance with Parts II through V and VIII of Article 250. [705.11(E)](https://2023.antflix.net#705.11(E)) | https://2023.antflix.net#705.11(E) |
Chapter 7 Special Conditions | 705.11(F) | The power production source service conductors shall be protected from overcurrent in accordance with Part VII of Article 230. The rating of the overcurrent protection device of the power production source service disconnecting means shall be used to determine if ground-fault protection of equipment is required in acco... | https://2023.antflix.net#705.11(F) |
Chapter 7 Special Conditions | 705.12 | The output of an interconnected electric power source shall be permitted to be connected to the load side of the service disconnecting means of the other source(s) at any distribution equipment on the premises. Where distribution equipment or feeders are fed simultaneously by a primary source of electricity and one or ... | https://2023.antflix.net#705.12 |
Chapter 7 Special Conditions | 705.12(A) | Where the power source output connection is made to a feeder, the following shall apply: The feeder ampacity is greater than or equal to 125 percent of the power-source output circuit current.Where the power-source output connection is made at a location other than the opposite end of the feeder from the primary source... | https://2023.antflix.net#705.12(A) |
Chapter 7 Special Conditions | 705.12(B) | For power source connections to distribution equipment with no specific listing and instructions for combining multiple sources, one of the following methods shall be used to determine the required ampere ratings of busbars: The sum of 125 percent of the power source(s) output circuit current and the rating of the over... | https://2023.antflix.net#705.12(B) |
Chapter 7 Special Conditions | 705.13 | An EMS in accordance with 750.30 shall be permitted to limit current and loading on the busbars and conductors supplied by the output of one or more interconnected electric power production or energy storage sources. Informational Note: A listed power control system (PCS) is a type of EMS that is capable of monitoring ... | https://2023.antflix.net#705.13 |
Chapter 7 Special Conditions | 705.20 | Means shall be provided to disconnect power source output conductors of electric power production equipment from conductors of other systems. A single disconnecting means shall be permitted to disconnect multiple power sources from conductors of other systems. Informational Note: See 480.7, Part II of Article 445, Part... | https://2023.antflix.net#705.20 |
Chapter 7 Special Conditions | 705.25 | Power source output conductors shall comply with 705.25(A) through (C). [705.25](https://2023.antflix.net#705.25) | https://2023.antflix.net#705.25 |
Chapter 7 Special Conditions | 705.25(A) | Wiring methods and fittings listed for use with power production systems shall be permitted in addition to general wiring methods and fittings permitted elsewhere in this Code. [705.25(A)](https://2023.antflix.net#705.25(A)) | https://2023.antflix.net#705.25(A) |
Chapter 7 Special Conditions | 705.25(B) | Flexible cords and cables, where used to connect the moving parts of power production equipment, or where used for ready removal for maintenance and repair, shall be listed and identified as DG cable, or other cable suitable for extra hard use, and shall be water resistant. Cables exposed to sunlight shall be sunlight ... | https://2023.antflix.net#705.25(B) |
Chapter 7 Special Conditions | 705.25(C) | Multiconductor cable assemblies used in accordance with their listings shall be permitted. Informational Note: See UL 3003, Distributed Generation Cables. and UL 9703, Outline of Investigation for Distributed Generation Wiring Harnesses, for additional information on DG cable (distributed generation cable) and harnesse... | https://2023.antflix.net#705.25(C) |
Chapter 7 Special Conditions | 705.28(A) | Where not elsewhere required or permitted in this Code, the maximum current for power sources shall be calculated using one of the following methods: The sum of the continuous output current ratings of the power production equipment at the circuit nominal system voltageFor power production equipment controlled by an EM... | https://2023.antflix.net#705.28(A) |
Chapter 7 Special Conditions | 705.28(B) | Where not elsewhere required or permitted in this Code, the power source output conductors shall have an ampacity not less than the larger of the following and comply with 110.14(C): The maximum currents in 705.28(A) multiplied by 125 percent without adjustment or correction factorsException No. 1: If the assembly, inc... | https://2023.antflix.net#705.28(B) |
Chapter 7 Special Conditions | 705.28(C) | Neutral conductors shall be permitted to be sized in accordance with either 705.28(C)(1) or (C)(2). [705.28(C)](https://2023.antflix.net#705.28(C)) | https://2023.antflix.net#705.28(C) |
Chapter 7 Special Conditions | 705.28(C)(1) | Where not elsewhere required or permitted in this Code, the ampacity of a neutral conductor to which a single-phase line-to-neutral power source is connected shall not be smaller than the ampacity in 705.28(B). [705.28(C)(1)](https://2023.antflix.net#705.28(C)(1)) | https://2023.antflix.net#705.28(C)(1) |
Chapter 7 Special Conditions | 705.28(C)(2) | A power production equipment neutral conductor used solely for instrumentation, voltage detection, or phase detection shall be permitted to be sized in accordance with 250.102. [705.28(C)(2)](https://2023.antflix.net#705.28(C)(2)) | https://2023.antflix.net#705.28(C)(2) |
Chapter 7 Special Conditions | 705.30(A) | Power source output conductors and equipment shall be provided with overcurrent protection. Circuits connected to more than one electrical source shall have overcurrent devices located to provide overcurrent protection from all sources. [705.30(A)](https://2023.antflix.net#705.30(A)) | https://2023.antflix.net#705.30(A) |
Chapter 7 Special Conditions | 705.30(B) | The overcurrent devices in other than generator systems shall be sized to carry not less than 125 percent of the maximum currents as calculated in 705.28(A). The rating or setting of overcurrent devices shall be permitted in accordance with 240.4(B) and (C). Exception: Circuits containing an assembly together with its ... | https://2023.antflix.net#705.30(B) |
Chapter 7 Special Conditions | 705.30(C) | Equipment containing overcurrent devices supplied from interconnected power sources shall be marked to indicate the presence of all sources. [705.30(C)](https://2023.antflix.net#705.30(C)) | https://2023.antflix.net#705.30(C) |
Chapter 7 Special Conditions | 705.30(D) | Fused disconnects, unless otherwise marked, shall be considered suitable for backfeed. Circuit breakers not marked "line" and "load" shall be considered suitable for backfeed. Circuit breakers marked "line" and "load" shall be considered suitable for backfeed or reverse current if specifically rated. [705.30(D)](https:... | https://2023.antflix.net#705.30(D) |
Chapter 7 Special Conditions | 705.30(E) | Listed plug-in-type circuit breakers backfed from electric power sources that are listed and identified as interactive shall be permitted to omit the additional fastener normally required by 408.36(D) for such applications. [705.30(E)](https://2023.antflix.net#705.30(E)) | https://2023.antflix.net#705.30(E) |
Chapter 7 Special Conditions | 705.30(F) | The following apply to the installation of transformers: For the purpose of overcurrent protection, the primary side of transformers with sources on each side shall be the side connected to the largest source of available fault current.Transformer secondary conductors shall be protected in accordance with 240.21 (C). [... | https://2023.antflix.net#705.30(F) |
Chapter 7 Special Conditions | 705.32 | Where ground-fault protection of equipment is installed in ac circuits as required elsewhere in this Code, the output of interconnected power production equipment shall be connected to the supply side of the ground-fault protection equipment. Exception: Connection of power production equipment shall be permitted to be ... | https://2023.antflix.net#705.32 |
Chapter 7 Special Conditions | 705.40 | The output of interactive electric power production equipment shall be automatically disconnected from all ungrounded conductors of the primary source when one or more of the phases of the primary source to which it is connected opens. The interactive electric power production equipment shall not be reconnected to the ... | https://2023.antflix.net#705.40 |
Chapter 7 Special Conditions | 705.45(A) | Single-phase power sources in interactive systems shall be connected to 3-phase power systems in order to limit unbalanced voltages at the point of interconnection to not more than 3 percent. Informational Note: For interactive power sources, unbalanced voltages can be minimized by the same methods that are used for si... | https://2023.antflix.net#705.45(A) |
Chapter 7 Special Conditions | 705.45(B) | Three-phase power sources in interactive systems shall have all phases automatically de-energized upon loss of, or unbalanced, voltage in one or more phases unless the interconnected system is designed so that significant unbalanced voltages will not result. [705.45(B)](https://2023.antflix.net#705.45(B)) | https://2023.antflix.net#705.45(B) |
Chapter 7 Special Conditions | 705.50 | Interconnected microgrid systems shall be capable of operating in interactive mode with a primary source of power, or electric utility, or other electric power production and distribution network. Microgrid systems shall be permitted to disconnect from other sources and operate in island mode. Informational Note No. 1:... | https://2023.antflix.net#705.50 |
Chapter 7 Special Conditions | 705.60 | Connections to primary power sources that are external to the microgrid system shall comply with the requirements of 705.11, 705.12, or 705.13. Power source conductors connecting to a microgrid system, including conductors supplying distribution equipment, shall be considered as power source output conductors. [705.60]... | https://2023.antflix.net#705.60 |
Chapter 7 Special Conditions | 705.65 | Microgrid systems that reconnect to primary power sources shall be provided with the necessary equipment to establish a synchronous transition. [705.65](https://2023.antflix.net#705.65) | https://2023.antflix.net#705.65 |
Chapter 7 Special Conditions | 705.70 | Microgrid interconnect devices shall comply with the following: Be required for any connection between a microgrid system and a primary power sourceBe evaluated for the application and have a field label applied or be listed for the applicationHave overcurrent devices located to provide overcurrent protection from all ... | https://2023.antflix.net#705.70 |
Chapter 7 Special Conditions | 705.76 | Microgrid control systems shall comply with the following: Coordinate interaction between multiple power sources of similar or different types, manufacturers, and technologies (including energy storage)Be evaluated for the application and have a field label applied, or be listed, or be designed under engineering superv... | https://2023.antflix.net#705.76 |
Chapter 7 Special Conditions | 705.80 | For interconnected power production sources that operate in island mode, capacity shall be calculated using the sum of all power source output maximum currents for the connected power production source. [705.80](https://2023.antflix.net#705.80) | https://2023.antflix.net#705.80 |
Chapter 7 Special Conditions | 705.81 | Power sources operating in island mode shall be controlled so that voltage and frequency are supplied within limits compatible with the connected loads. [705.81](https://2023.antflix.net#705.81) | https://2023.antflix.net#705.81 |
Chapter 7 Special Conditions | 705.82 | Systems operating in island mode shall be permitted to supply 120 volts to single-phase, 3-wire, 120/240-volt distribution equipment where there are no 240-volt outlets and where there are no multiwire branch circuits. In all installations, the sum of the ratings of the power sources shall be less than the rating of th... | https://2023.antflix.net#705.82 |
Chapter 7 Special Conditions | 706.1 | This article applies to all energy storage systems (ESS) having a capacity greater than 3.6 MJ (1 kWh) that may be stand-alone or interactive with other electric power production sources. These systems are primarily intended to store and provide energy during normal operating conditions. Informational Note No. 1: See A... | https://2023.antflix.net#706.1 |
Chapter 7 Special Conditions | 706.3 | The installation and maintenance of ESS equipment and all associated wiring and interconnections shall be performed only by qualified persons. Informational Note: See Article 100 for the definition of qualified person. [706.3](https://2023.antflix.net#706.3) | https://2023.antflix.net#706.3 |
Chapter 7 Special Conditions | 706.4 | Each ESS shall be provided with a nameplate plainly visible after installation and marked with the following: Manufacturer's name, trademark, or other descriptive marking by which the organization responsible for supplying the ESS can be identifiedRated frequencyNumber of phases, if acRating (kW or kVA)Available fault ... | https://2023.antflix.net#706.4 |
Chapter 7 Special Conditions | 706.5 | Energy storage systems shall be listed. [706.5](https://2023.antflix.net#706.5) | https://2023.antflix.net#706.5 |
Chapter 7 Special Conditions | 706.6 | Multiple ESSs shall be permitted to be installed on the same premises. [706.6](https://2023.antflix.net#706.6) | https://2023.antflix.net#706.6 |
Chapter 7 Special Conditions | 706.7(A) | ESSs shall be commissioned upon installation. This shall not apply in one- and two-family dwellings. Informational Note: See NFPA 855-2020, Standard for the Installation of Stationary Energy Storage Systems, for information related to the commissioning of ESSs. [706.7(A)](https://2023.antflix.net#706.7(A)) | https://2023.antflix.net#706.7(A) |
Chapter 7 Special Conditions | 706.7(B) | ESSs shall be maintained in proper and safe operating condition. The required maintenance shall be in accordance with the manufacturer's requirements and industry standards. A written record of the system maintenance shall be kept and shall include records of repairs and replacements necessary to maintain the system in... | https://2023.antflix.net#706.7(B) |
Chapter 7 Special Conditions | 706.9 | The maximum voltage of an ESS shall be the rated ESS input and output voltage(s) indicated on the ESS nameplate(s) or system listing. [706.9](https://2023.antflix.net#706.9) | https://2023.antflix.net#706.9 |
Chapter 7 Special Conditions | 706.15(A) | Means shall be provided to disconnect the ESS from all wiring systems, including other power systems, utilization equipment, and its associated premises wiring. [706.15(A)](https://2023.antflix.net#706.15(A)) | https://2023.antflix.net#706.15(A) |
Chapter 7 Special Conditions | 706.15(B) | The disconnecting means shall be readily accessible and shall comply with one or more of the following: Located within the ESSLocated within sight and within 3 m (10 ft) from the ESSWhere not located within sight of the ESS, the disconnecting means, or the enclosure providing access to the disconnecting means, shall be... | https://2023.antflix.net#706.15(B) |
Chapter 7 Special Conditions | 706.15(C) | Each ESS disconnecting means shall plainly indicate whether it is in the open (off) or closed (on) position and be permanently marked as follows: "ENERGY STORAGE SYSTEM DISCONNECT" The disconnecting means shall be legibly marked in the field to indicate the following:Nominal ESS output voltageAvailable fault current de... | https://2023.antflix.net#706.15(C) |
Chapter 7 Special Conditions | 706.15(D) | Where circuits from the input or output terminals of energy storage components in an ESS pass through a wall, floor, or ceiling, a readily accessible disconnecting means shall be provided within sight of the energy storage component. Fused disconnecting means or circuit breakers shall be permitted to be used. [706.15(D... | https://2023.antflix.net#706.15(D) |
Chapter 7 Special Conditions | 706.15(E) | In cases where the battery is separate from the ESS electronics and is subject to field servicing, 706.15(E)(1) through (E)(4) shall apply. Informational Note: Batteries could include an enclosure, battery monitoring and controls, or other related battery components. [706.15(E)](https://2023.antflix.net#706.15(E)) | https://2023.antflix.net#706.15(E) |
Chapter 7 Special Conditions | 706.15(E)(1) | A disconnecting means shall be provided for all ungrounded conductors. A disconnecting means shall be readily accessible and located within sight of the battery. Informational Note: See 240.21(H) for information on the location of the overcurrent device for battery conductors. [706.15(E)(1)](https://2023.antflix.net#70... | https://2023.antflix.net#706.15(E)(1) |
Chapter 7 Special Conditions | 706.15(E)(2) | Battery circuits exceeding 240 volts dc nominal between conductors or to ground shall have provisions to disconnect the series-connected strings into segments not exceeding 240 volts dc nominal for maintenance by qualified persons. Non-load-break bolted or plug-in disconnects shall be permitted. [706.15(E)(2)](https://... | https://2023.antflix.net#706.15(E)(2) |
Chapter 7 Special Conditions | 706.15(E)(3) | Where a disconnecting means is provided with remote controls to activate the disconnecting means and the controls for the disconnecting means are not located within sight of the battery, the disconnecting means shall be capable of being locked in the open position, in accordance with 110.25, and the location of the con... | https://2023.antflix.net#706.15(E)(3) |
Chapter 7 Special Conditions | 706.15(E)(4) | The disconnecting means shall be legibly marked in the field. The marking shall be of sufficient durability to withstand the environment involved and shall include the following: Nominal battery voltageAvailable fault current derived from the stationary standby battery systemInformational Note No. 1: Battery equipment ... | https://2023.antflix.net#706.15(E)(4) |
Chapter 7 Special Conditions | 706.16 | The connection of an ESS to sources of energy shall comply with 706.16(A) through (F). [706.16](https://2023.antflix.net#706.16) | https://2023.antflix.net#706.16 |
Chapter 7 Special Conditions | 706.16(A) | A disconnect that has multiple sources of power shall disconnect all energy sources when in the off position. [706.16(A)](https://2023.antflix.net#706.16(A)) | https://2023.antflix.net#706.16(A) |
Chapter 7 Special Conditions | 706.16(B) | ESS that operate in parallel with other ac sources shall use inverters that are listed and identified as interactive. [706.16(B)](https://2023.antflix.net#706.16(B)) | https://2023.antflix.net#706.16(B) |
Chapter 7 Special Conditions | 706.16(C) | Upon loss of a primary source of power, an ESS with a utility-interactive inverter shall comply with the requirements of 705.40. [706.16(C)](https://2023.antflix.net#706.16(C)) | https://2023.antflix.net#706.16(C) |
Chapter 7 Special Conditions | 706.16(D) | Unbalanced ac connections between an ESS and other ac electric power production sources shall be in accordance with 705.45 [706.16(D)](https://2023.antflix.net#706.16(D)) | https://2023.antflix.net#706.16(D) |
Chapter 7 Special Conditions | 706.16(E) | The connection of an ESS to other energy sources shall be in accordance with 705.12. [706.16(E)](https://2023.antflix.net#706.16(E)) | https://2023.antflix.net#706.16(E) |
Chapter 7 Special Conditions | 706.16(F) | Where the output of an ESS is capable of operating in stand-alone mode, the requirements of 710.15 shall apply. [706.16(F)](https://2023.antflix.net#706.16(F)) | https://2023.antflix.net#706.16(F) |
Chapter 7 Special Conditions | 706.20(A) | Provisions appropriate to the energy storage technology shall be made for sufficient diffusion and ventilation of any possible gases from the storage device, if present, to prevent the accumulation of an explosive mixture. Ventilation of an ESS shall be permitted to be provided in accordance with the manufacturer's rec... | https://2023.antflix.net#706.20(A) |
Chapter 7 Special Conditions | 706.20(B) | An ESS for one- and two-family dwelling units shall not exceed 100 volts dc between conductors or to ground. Exception: Where live parts are not accessible during routine ESS maintenance, a maximum ESS voltage of 600 volts dc shall be permitted. [706.20(B)](https://2023.antflix.net#706.20(B)) | https://2023.antflix.net#706.20(B) |
Chapter 7 Special Conditions | 706.20(C)(1) | Working spaces for ESS shall comply with 110.26 and 110.34. [706.20(C)(1)](https://2023.antflix.net#706.20(C)(1)) | https://2023.antflix.net#706.20(C)(1) |
Chapter 7 Special Conditions | 706.20(C)(2) | ESSs shall be permitted to have space between components in accordance with the manufacturer's instructions and listing. Informational Note: Additional space may be needed to accommodate ESS hoisting equipment, tray removal, or spill containment. [706.20(C)(2)](https://2023.antflix.net#706.20(C)(2)) | https://2023.antflix.net#706.20(C)(2) |
Chapter 7 Special Conditions | 706.21 | ESS shall be indicated by markings or labels that shall be in accordance with 110.21(B). [706.21](https://2023.antflix.net#706.21) | https://2023.antflix.net#706.21 |
Chapter 7 Special Conditions | 706.21(A) | Plaques or directories shall be installed in accordance with 705.10. [706.21(A)](https://2023.antflix.net#706.21(A)) | https://2023.antflix.net#706.21(A) |
Chapter 7 Special Conditions | 706.21(B) | Plaques or directories shall be installed in accordance with 710.10. [706.21(B)](https://2023.antflix.net#706.21(B)) | https://2023.antflix.net#706.21(B) |
Chapter 7 Special Conditions | 706.30(A) | The maximum current for the specific circuit shall be calculated in accordance with 706.30(A)(1) through (A)(5). [706.30(A)](https://2023.antflix.net#706.30(A)) | https://2023.antflix.net#706.30(A) |
Chapter 7 Special Conditions | 706.30(A)(1) | Circuit current shall be the rated current indicated on the ESS nameplate(s) or system listing. Where the ESS has separate input (charge) and output (discharge) circuits or ratings, these shall be considered individually. Where the same terminals on the ESS are used for charging and discharging, the rated current shall... | https://2023.antflix.net#706.30(A)(1) |
Chapter 7 Special Conditions | 706.30(A)(2) | The maximum current shall be the inverter continuous output current rating. [706.30(A)(2)](https://2023.antflix.net#706.30(A)(2)) | https://2023.antflix.net#706.30(A)(2) |
Chapter 7 Special Conditions | 706.30(A)(3) | The maximum current shall be the continuous inverter input current rating when the inverter is producing rated power at the lowest input voltage. [706.30(A)(3)](https://2023.antflix.net#706.30(A)(3)) | https://2023.antflix.net#706.30(A)(3) |
Chapter 7 Special Conditions | 706.30(A)(4) | The maximum current shall be the continuous ac output current rating of the inverter when the inverter is producing rated power. [706.30(A)(4)](https://2023.antflix.net#706.30(A)(4)) | https://2023.antflix.net#706.30(A)(4) |
Chapter 7 Special Conditions | 706.30(A)(5) | The maximum current shall be the dc-to-dc converter continuous output current rating. [706.30(A)(5)](https://2023.antflix.net#706.30(A)(5)) | https://2023.antflix.net#706.30(A)(5) |
Chapter 7 Special Conditions | 706.30(B) | The ampacity of the output circuit conductors of the ESS(s) connected to the wiring system serving the loads to be serviced by the system shall not be less than the greater of the nameplate(s)-rated circuit current as determined in accordance with 706.30(A)(1) or the rating of the ESS(s) overcurrent protective device(s... | https://2023.antflix.net#706.30(B) |
Chapter 7 Special Conditions | 706.30(C) | If the output of a single-phase, 2-wire ESS output(s) is connected to the grounded or neutral conductor and a single ungrounded conductor of a 3-wire system or of a 3-phase, 4-wire, wye-connected system, the maximum unbalanced neutral load current plus the ESS(s) output rating shall not exceed the ampacity of the groun... | https://2023.antflix.net#706.30(C) |
Chapter 7 Special Conditions | 706.31(A) | Protection devices for ESS circuits shall be in accordance with 706.31(B) through (F). Circuits shall be protected at the source from overcurrent. A circuit conductor connected at one end to a supply with integral fault protection, where the conductor is rated for the maximum circuit current from that supply, and also ... | https://2023.antflix.net#706.31(A) |
Chapter 7 Special Conditions | 706.31(B) | Overcurrent protective devices, where required, shall be not less than 125 percent of the maximum currents calculated in 706.30(A). Exception: Where the assembly, including the overcurrent protective devices, is listed for operation at 100 percent of its rating, the ampere rating of the overcurrent devices shall be per... | https://2023.antflix.net#706.31(B) |
Chapter 7 Special Conditions | 706.31(C) | Overcurrent protective devices, either fuses or circuit breakers, used in any dc portion of an ESS shall be listed for dc and shall have the appropriate voltage, current, and interrupting ratings for the application. [706.31(C)](https://2023.antflix.net#706.31(C)) | https://2023.antflix.net#706.31(C) |
Chapter 7 Special Conditions | 706.31(D) | A listed and labeled current-limiting overcurrent protective device shall be installed adjacent to the ESS for each dc output circuit. Exception: Where current-limiting overcurrent protection is provided for the dc output circuits of a listed ESS, additional current-limiting overcurrent devices shall not be required. [... | https://2023.antflix.net#706.31(D) |
Chapter 7 Special Conditions | 706.31(E) | Means shall be provided to disconnect any fuses associated with ESS equipment and components when the fuse is energized from both directions and is accessible to other than qualified persons. Switches, pullouts, or similar devices that are rated for the application shall be permitted to serve as a means to disconnect f... | https://2023.antflix.net#706.31(E) |
Chapter 7 Special Conditions | 706.31(F) | Where circuits from the input or output terminals of energy storage components in an ESS pass through a wall, floor, or ceiling, overcurrent protection shall be provided at the energy storage component end of the circuit. [706.31(F)](https://2023.antflix.net#706.31(F)) | https://2023.antflix.net#706.31(F) |
Chapter 7 Special Conditions | 706.33(A) | Provisions shall be provided to control the charging process of the ESS. All adjustable means for control of the charging process shall be accessible only to qualified persons. [706.33(A)](https://2023.antflix.net#706.33(A)) | https://2023.antflix.net#706.33(A) |
Chapter 7 Special Conditions | 706.33(B)(1) | An ESS employing a diversion charge controller as the sole means of regulating charging shall be equipped with a second independent means to prevent overcharging of the storage device. [706.33(B)(1)](https://2023.antflix.net#706.33(B)(1)) | https://2023.antflix.net#706.33(B)(1) |
Chapter 7 Special Conditions | 706.33(B)(2) | Circuits containing a diversion charge controller and a diversion load shall comply with the following: The current rating of the diversion load shall be less than or equal to the current rating of the diversion load charge controller. The voltage rating of the diversion load shall be greater than the maximum ESS volta... | https://2023.antflix.net#706.33(B)(2) |
Chapter 7 Special Conditions | 706.33(B)(3) | Systems using interactive inverters to control energy storage state-of-charge by diverting excess power into an alternate electric power production and distribution system, such as utility, shall comply with 706.33(B)(3)(a) and (B)(3)(b). These systems shall not be required to comply with 706.33(B)(2).These systems sha... | https://2023.antflix.net#706.33(B)(3) |
Chapter 7 Special Conditions | 706.33(C) | Where charge controllers and other DC-to-DC power converters that increase or decrease the output current or output voltage with respect to the input current or input voltage are installed, all of the following shall apply: The ampacity of the conductors in output circuits shall be based on the maximum rated continuous... | https://2023.antflix.net#706.33(C) |
Chapter 7 Special Conditions | V | Part V applies to ESSs composed of or containing flow batteries. Informational Note: Due to the unique design features and difference in operating characteristics of flow batteries as compared with that of storage batteries such as lead acid or lithium ion batteries, the requirements for flow batteries have been includ... | https://2023.antflix.net#V |
Chapter 7 Special Conditions | 706.40 | The system and system components shall also meet Parts I, II, and III of this article. Informational Note: See NFPA 855-2020, Standard for the Installation of Stationary Energy Storage Systems, for installation requirements for ESS, including requirements for flow batteries. [706.40](https://2023.antflix.net#706.40) | https://2023.antflix.net#706.40 |
Chapter 7 Special Conditions | 706.41 | The electrolyte(s) that are acceptable for use in the batteries associated with the ESS shall be identified by name and chemical composition. Such identification shall be provided by readily discernable signage adjacent to every location in the system where the electrolyte can be put into or taken out of the system. [7... | https://2023.antflix.net#706.41 |
Chapter 7 Special Conditions | 706.42 | Flow battery systems shall be provided with a means for electrolyte containment to prevent spills of electrolyte from the system. An alarm system shall be provided to signal an electrolyte leak from the system. Electrical wiring and connections shall be located and routed in a manner that mitigates the potential for ex... | https://2023.antflix.net#706.42 |
Chapter 7 Special Conditions | 706.43 | Controls shall be provided to safely shut down the system in the event of electrolyte blockage. [706.43](https://2023.antflix.net#706.43) | https://2023.antflix.net#706.43 |
Chapter 7 Special Conditions | 706.44 | Pumps and other fluid handling equipment are to be rated/specified suitable for exposure to the electrolytes. [706.44](https://2023.antflix.net#706.44) | https://2023.antflix.net#706.44 |
Chapter 7 Special Conditions | divider_21_VI | Part VI Applies to ESSs Using Other Technologies Intended to Store Energy and When There Is a Demand for Electrical Power to Use the Stored Energy to Generate the Needed Power [divider_21_VI](https://2023.antflix.net#divider_21_VI) | https://2023.antflix.net#divider_21_VI |
Chapter 7 Special Conditions | 706.50 | All electrical connections to and from the system and system components shall be in accordance with the applicable provisions of this Code. The systems shall comply with Parts I, II, III, and IV of this article. [706.50](https://2023.antflix.net#706.50) | https://2023.antflix.net#706.50 |
Chapter 7 Special Conditions | 706.51 | Flywheel ESS (FESS) using flywheels as the storage mechanism shall also comply with all of the following: FESS shall not be used for one- or two-family dwelling units.Informational Note No. 1: FESS are intended for high-power shorter term applications. They contain parts that rotate under high speed with hazardous kine... | https://2023.antflix.net#706.51 |
Chapter 7 Special Conditions | 708.1 | This article applies to the installation, operation, monitoring, control, and maintenance of the portions of the premises wiring system intended to supply, distribute, and control electricity to designated critical operations areas (DCOA) in the event of disruption to elements of the normal system. Critical operations ... | https://2023.antflix.net#708.1 |
Chapter 7 Special Conditions | 708.2 | Reconditioned transfer switches shall not be permitted. [708.2](https://2023.antflix.net#708.2) | https://2023.antflix.net#708.2 |
Chapter 7 Special Conditions | 708.4 | Risk assessment for critical operations power systems shall be documented and shall be conducted in accordance with 708.4(A) through (C). Informational Note: See NFPA 1600-2019, Standard on Continuity, Emergency, and Crisis Management, Chapter 5, which provides additional guidance concerning risk assessment and hazard ... | https://2023.antflix.net#708.4 |
Chapter 7 Special Conditions | 708.4(A) | In critical operations power systems, risk assessment shall be performed to identify hazards, the likelihood of their occurrence, and the vulnerability of the electrical system to those hazards. [708.4(A)](https://2023.antflix.net#708.4(A)) | https://2023.antflix.net#708.4(A) |
Chapter 7 Special Conditions | 708.4(B) | Hazards to be considered at a minimum shall include, but shall not be limited to, the following: Naturally occurring hazards (geological, meteorological, and biological)Human-caused events (accidental and intentional) [708.4(B)](https://2023.antflix.net#708.4(B)) | https://2023.antflix.net#708.4(B) |
Chapter 7 Special Conditions | 708.4(C) | Based on the results of the risk assessment, a strategy shall be developed and implemented to mitigate the hazards that have not been sufficiently mitigated by the prescriptive requirements of this Code. [708.4(C)](https://2023.antflix.net#708.4(C)) | https://2023.antflix.net#708.4(C) |
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