Polarity Distinction and Wiring Verification Tips for ZCEBOX Plastic Distribution Box Junction Boxes

1. 1. Quick Polarity Distinction
2. Follow the industry standard: "red/brown = live wire, blue = neutral wire, yellow-green dual-color = ground wire". ZCEBOX terminals are marked with "L (live), N (neutral), PE (ground)"—connect wires according to the marks to avoid confusion.
3. 2. Simple Verification After Wiring
4. Touch terminals with an electric test pen: the pen lights up for live wire (L), no light for neutral wire (N); measure L-N voltage with a multimeter—display around 220V indicates correct wiring, recheck polarity if voltage is abnormal.

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