**Step-by-step wire replacement**① After power off, take photos of the original wiring layout with a mobile phone (for reference) and record the terminal position of each wire according to the marks; ② Loosen the screws of the old wire terminals one by one and gently pull out. **Step-by-step wire replacement**① After power off, take photos of the original wiring layout with a mobile phone (for reference) and record the terminal position of each wire according to the marks; ② Loosen the screws of the old wire terminals one by one and gently pull out. In this guide, we'll break down everything you need to know to install a distribution box correctly and confidently. Choose the right box based on environment (indoor/outdoor), load capacity, and durability. Check for proper IP/NEMA ratings and material quality. Ensure safe placement: install in. An electrical distribution box, also known as a power distribution box, panelboard, or consumer unit, is the core of an electrical system. It is usually equipped with circuit breakers, fuses, terminal connectors, and other components.
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