| Circuit Breaker | A circuit breaker is an electrical safety device that opens a circuit when current exceeds a safe level. | Specifications & Standards |
| GFCI Ground-Fault Circuit Interrupter | A GFCI is a device that shuts off power when it detects current leaking from an electrical circuit. | Specifications & Standards |
| Fuse | A fuse is an electrical protective device that melts and opens a circuit when current becomes too high. | Specifications & Standards |
| Overcurrent | Overcurrent is electrical current above the rated capacity of equipment or conductors. | Specifications & Standards |
| Panelboard | A panelboard is an electrical cabinet containing breakers or overcurrent devices that distribute power to circuits. | Specifications & Standards |
| Receptacle | A receptacle is an electrical outlet or device where a plug connects to power. | Specifications & Standards |