A healthcare facility has a 500kW emergency generator. What is the minimum short-circuit current rating required for the generator protection device, according to Article 690.8(C) of the 2026 NEC?

Texas Master exam practice question · Motors & Generators

A healthcare facility has a 500kW emergency generator. What is the minimum short-circuit current rating required for the generator protection device, according to Article 690.8(C) of the 2026 NEC?

A100kA
B125kA
150kA
D200kA

Exam tip

Generator protection devices must be sized according to the short-circuit current rating requirements specified in Article 690.8(C) of the NEC.

Why C is correct

According to Article 690.8(C) of the 2026 NEC, the generator protection device must have a minimum short-circuit current rating of 150kA for a 500kW generator. The correct answer is option C.

Practice 12 more Motors & Generators questions

Timed mock exams, a wrong book and flashcards — one subscription covers every contractor exam line.

Start studying free

A commercial building requires a backup generator to supply power to critical loads during an outage. The total load is 200kW. What is the minimum size of the generator required, according to Article 700.6 of the 2026 NEC?
A new generator is being installed in a healthcare facility. According to the 2026 NEC, what is the minimum grounding requirement for the generator's neutral and equipment grounding conductor?
A residential community has a 200kW generator. What is the minimum capacity required for the transfer switch, according to Article 700.6(A) of the 2026 NEC?
A residential subdivision requires a new generator to be installed. The generator has a capacity of 10kW. What is the minimum conductor size required for the generator's service entrance cable, according to the 2026 NEC?
A school has a 3-phase motor with a full-load current of 50A. What is the minimum conductor size required for the motor wiring, according to Article 430.22(C) of the 2026 NEC?

A healthcare facility has a 500kW emergency generator. What is the minimum short-circuit current rating required for the generator protection device, according to Article 690.8(C) of the 2026 NEC?

A healthcare facility has a 500kW emergency generator. What is the minimum short-circuit current rating required for the generator protection device, according to Article 690.8(C) of the 2026 NEC?

More Motors & Generators questions