Live wire (L): at high potential difference (about 230–240 V) relative to earth. The Live and Neutral wires come into the house and are immediately connected to a main fuse (100A, shown as the black box) which the consumer can not access - this fuse for the whole house prevents the user damaging or short circuiting the mains supply. The mains supply then goes to the electricity. An electrical panel box, also known as a breaker box or a distribution board, is a crucial component of any electrical system. What is Distribution Board? Distribution board. In any junction box or outlet box in your home, you'll find a rainbow of wires that power the various aspects of your appliances. This can prove to be pretty overwhelming. In most modern construction, you'll find a minimum of three types of wiring: live wires, neutral wires, and ground wires. Fix the box securely to the wall, ensuring it's at an accessible.
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