Create app.py

app.py

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+import gradio as gr
+
+# Constants for resistivity (ohm·mm²/m)
+RESISTIVITY = {
+    "Copper": 0.0172,
+    "Aluminum": 0.0282
+}
+
+def cable_sizing(load_kw, voltage, power_factor, length, drop_percent, material):
+    try:
+        # Step 1: Calculate current
+        current = (load_kw * 1000) / (voltage * power_factor)
+        
+        # Step 2: Allowable voltage drop
+        vd_allowed = (drop_percent / 100) * voltage
+        
+        # Step 3: Required cross-sectional area
+        rho = RESISTIVITY[material]
+        area = (2 * rho * length * current) / vd_allowed   # 2 for single-phase, use √3 for three-phase
+        
+        # Round to nearest standard cable size
+        standard_sizes = [1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240]
+        recommended_size = min([s for s in standard_sizes if s >= area], default=">240")
+        
+        return (
+            f"Calculated Current: {current:.2f} A\n"
+            f"Required Area: {area:.2f} mm²\n"
+            f"Recommended Cable Size: {recommended_size} mm² ({material})"
+        )
+    except Exception as e:
+        return f"Error: {e}"
+
+# Gradio Interface
+iface = gr.Interface(
+    fn=cable_sizing,
+    inputs=[
+        gr.Number(label="Load (kW)"),
+        gr.Number(label="Voltage (V)"),
+        gr.Number(label="Power Factor (pf)", value=0.8),
+        gr.Number(label="Cable Length (m)"),
+        gr.Number(label="Allowable Voltage Drop (%)", value=3),
+        gr.Radio(["Copper", "Aluminum"], label="Conductor Material", value="Copper")
+    ],
+    outputs="text",
+    title="Cable Sizing Calculator ⚙️",
+    description="Estimate suitable cable size based on load, voltage, and voltage drop limit."
+)
+
+iface.launch()