Create app.py

app.py

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+import streamlit as st
+
+# Constants
+VOLTAGE_LEVELS = [220, 380, 440]
+CABLE_SIZES = {10: 1.5, 20: 2.5, 40: 4, 60: 6, 80: 10, 100: 16}
+TRANSFORMER_SIZES = [25, 50, 100, 200, 400, 630, 1000]  # kVA
+
+# Sidebar
+st.set_page_config(page_title="Electrical Load Calculator", layout="wide")
+st.sidebar.title("Electrical Load Calculation")
+st.sidebar.markdown("### Input Parameters")
+
+# Input: Load Details
+total_load_kw = st.sidebar.number_input("Enter total load (kW)", min_value=0.0, step=0.1, value=0.0)
+power_factor = st.sidebar.slider("Power Factor", 0.5, 1.0, 0.9, 0.01)
+voltage_level = st.sidebar.selectbox("Select Voltage Level (V)", VOLTAGE_LEVELS)
+
+# Input: Cable Sizing
+distance_meters = st.sidebar.number_input("Enter distance to load (meters)", min_value=1, step=1, value=10)
+st.sidebar.markdown("---")
+
+# Columns for Input and Results
+col1, col2 = st.columns(2)
+
+# Input Parameters Display
+with col1:
+    st.header("Input Parameters")
+    st.write(f"**Total Load (kW):** {total_load_kw} kW")
+    st.write(f"**Power Factor:** {power_factor}")
+    st.write(f"**Voltage Level:** {voltage_level} V")
+    st.write(f"**Distance to Load:** {distance_meters} meters")
+
+# Calculations
+total_load_kva = total_load_kw / power_factor
+current_ampere = (total_load_kva * 1000) / voltage_level
+recommended_cable_size = next((size for amp, size in CABLE_SIZES.items() if current_ampere <= amp), None)
+transformer_size = next((size for size in TRANSFORMER_SIZES if total_load_kva <= size), None)
+
+# Results Display
+with col2:
+    st.header("Calculation Results")
+    st.write(f"**Total Load (kVA):** {total_load_kva:.2f} kVA")
+    st.write(f"**Current (Amps):** {current_ampere:.2f} A")
+    if recommended_cable_size:
+        st.write(f"**Recommended Cable Size:** {recommended_cable_size} mm²")
+    else:
+        st.error("No suitable cable size found. Increase input voltage or reduce load.")
+    if transformer_size:
+        st.write(f"**Recommended Transformer Size:** {transformer_size} kVA")
+    else:
+        st.error("No suitable transformer size found.")
+
+# Visualization
+st.markdown("---")
+st.header("Visual Representation")
+col3, col4 = st.columns(2)
+
+with col3:
+    st.subheader("Load vs Transformer Capacity")
+    st.bar_chart([total_load_kva, transformer_size if transformer_size else 0])
+
+with col4:
+    st.subheader("Load Distribution (kVA)")
+    st.pie_chart({"Used Load": total_load_kva, "Remaining Capacity": max(transformer_size - total_load_kva, 0) if transformer_size else 0})
+
+# Footer
+st.sidebar.markdown("---")
+st.sidebar.markdown("Developed with ❤️ for Electrical Engineers")