Utilization equipment on branch circuits (other than luminaires) shall not exceed what percentage of the branch circuit rating?

Utilization equipment on branch circuits (other than luminaires) shall not exceed what percentage of the branch circuit rating?

• A. 25%
• B. 50%
• C. 75%
• D. 100%

Answer: (B)

The main idea is that non-lighting loads on a branch circuit must be limited to half of the circuit’s rated current. This means that for a 20-amp circuit, up to 10 amps can be used by utilization equipment (receptacles, appliances, etc.), with the remaining capacity available for lighting or other allowed loads. The limit provides a safety margin so the circuit isn’t overwhelmed by simultaneous non-luminaire devices and helps prevent nuisance trips and overheating. The other options would either underutilize or exceed the circuit’s capacity.

The main idea is that non-lighting loads on a branch circuit must be limited to half of the circuit’s rated current. This means that for a 20-amp circuit, up to 10 amps can be used by utilization equipment (receptacles, appliances, etc.), with the remaining capacity available for lighting or other allowed loads. The limit provides a safety margin so the circuit isn’t overwhelmed by simultaneous non-luminaire devices and helps prevent nuisance trips and overheating. The other options would either underutilize or exceed the circuit’s capacity.