A swimming pool has a pool pump that is controlled by a time clock. What type of circuit is required for the time clock according to the 2023 NEC?
- Single-phase, 120V
- BSingle-phase, 240V
- CThree-phase, 208V
- DThree-phase, 277V
Exam tip
Ensure that you understand the specific requirements for the circuit type for pool pump time clocks.
Why A is correct
According to 2023 NEC Article 410.10(B), a time clock for a pool pump must be installed on a single-phase, 120V circuit. Options B, C, and D are incorrect because they do not meet the specific circuit requirements for a time clock.