This is a comprehensive set of self-adhesive labels designed for identifying circuits in home fuse boxes, consumer units, and distribution boards. It allows you to clearly and accurately mark each circuit, promoting electrical safety and everyday convenience. Main Breaker: Shuts off all power to the house. Branch Circuit Breakers:. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. The. What Is a Distribution Box? What should I do if my distribution box labels are missing? How often should I check or update my labels? Can I use regular paper for labeling breakers? Is it safe to open my distribution box by myself? What do numbers like “20A” or “15A” mean on breaker labels? It is. Our Circuit Detail Labels are designed to provide clear identification of electrical circuits on distribution boards, fuse boxes, and consumer units. You need to label every circuit breaker clearly and accurately to meet National Electrical Code (NEC). 170 Circuit Breaker Decals - 100 AMP Set - Vinyl Labels for Breaker Panel Boxes - for Home or Office, Apartments and Electricians - Place on Directory, Switch or Fuse - Bright “Easy Read” Color.