Koydo Certify

20A circuits required for small appliances in kitchen and laundry areas. At minimum two 20A circuits must serve kitchen receptacle outlets.

Arc-Fault Circuit Interrupter protection required for all 120V 15A and 20A branch circuits installed in dwelling unit bedrooms, living rooms, and similar spaces.

Ground-Fault Circuit Interrupter protection required for receptacles in bathrooms, garages, outdoors, crawl spaces, unfinished basements, kitchens, and boathouses.

Grounding connects equipment to earth to limit voltage imposed by lightning or accidental contact with higher-voltage lines. Bonding ensures a low-impedance path for fault current. Both grounding and bonding are required.

Minimum burial depth for direct-burial cable is 24 inches. PVC conduit requires 18 inches. Rigid metal conduit (RMC) requires 6 inches. GFCI-protected 120V residential circuits may use 12 inches minimum.

Conductor ampacity is determined by insulation type, ambient temperature correction factors, and number of current-carrying conductors bundled in conduit. See Table 310.15(B)(16) for standard ratings.

In clothes closets, recessed incandescent or LED luminaires must maintain at least 12 inches clearance from the storage area. Surface-mounted fixtures also require 12 inch minimum clearance.

Receptacles within 6 to 20 feet of a pool must be GFCI protected. No receptacle may be located within 6 feet of the pool edge. All 120V receptacles within 20 feet require GFCI protection.

Emergency electrical systems must restore power within 10 seconds of normal supply failure. Acceptable sources include generators, storage batteries, or a separate utility service tie.

Service entrance conductors must have adequate capacity. One-family dwellings require a minimum 100A service. Many modern installations use 200A to accommodate electric vehicles and other loads.