h30190/hjplus_taiwan_architect_kb/taipower-indoor-wiring-ampacity

Taipower Indoor Wiring Ampacity & Conduit Fill

Context & Purpose

This skill encodes the regulations for indoor electrical wiring (屋內線路裝置規則) specifically focusing on the allowable ampacity of wires inside conduits (PVC or Metal) and ambient temperature corrections.

Parameters & Tables (Based on Article 16)

1. Baseline Conditions

• Standard Ambient Temperature: 35°C
• Standard Conductor Insulation Temp: 60°C (e.g., PVC), 75°C (e.g., XLPE/PE), or 90°C.
• Wire Material: Copper (銅)

2. Ampacity for PVC Wire in Conduit (60°C Insulation, 35°C Ambient) - Partial Table (Table 16-7)

(Note: Neutral wire, grounding wire, and control wires are generally not counted in the "number of wires" for ampacity derating, unless harmonics are present).

3. Voltage Drop (Article 9)

• Feeder + Branch Circuit: Total voltage drop must not exceed 5% of the nominal voltage.
• Feeder only or Branch only: Voltage drop must not exceed 3%.

Execution Logic for AI

When reviewing a single-line diagram (單線圖) or wiring schedule:

1. Identify the wire size (e.g., 8 mm²) and the number of current-carrying conductors in the conduit.
2. Cross-reference with the ampacity table to find the maximum allowed current.
3. Compare the allowed current with the specified breaker size (AT/AF). The wire's ampacity must be ≧ the breaker's trip setting (AT), with exceptions for motor loads.
4. Verify voltage drop calculations do not exceed 3% for branches or 5% total.