Up to what kVA capacity and voltage rating does the regulation require only one registered master electrician?

Up to what kVA capacity and voltage rating does the regulation require only one registered master electrician?

• A. 1000 kVA, 600 V
• B. 250 kVA, 480 V
• C. 750 kVA, 690 V
• D. 500 kVA, 600 V

Answer: (D)

Electrical licensing supervision scales with how large and how high the voltage of a project are. For smaller installations, a single registered master electrician can oversee the work and ensure compliance. The regulation sets a threshold at 500 kVA and 600 V: up to that combination, one master electrician is sufficient. If either the capacity or the voltage goes higher, more than one master electrician is needed to manage the added complexity and safety risks. So 500 kVA at 600 V is the largest combination that still fits under the single-master requirement. Larger capacities or voltages would require additional masters.

Electrical licensing supervision scales with how large and how high the voltage of a project are. For smaller installations, a single registered master electrician can oversee the work and ensure compliance. The regulation sets a threshold at 500 kVA and 600 V: up to that combination, one master electrician is sufficient. If either the capacity or the voltage goes higher, more than one master electrician is needed to manage the added complexity and safety risks.

So 500 kVA at 600 V is the largest combination that still fits under the single-master requirement. Larger capacities or voltages would require additional masters.