What is the minimum general lighting load for a 11,000 sq-ft courthouse?

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Prepare for the Independent Electrical Contractors (IEC) Year 4 Exam. Utilize flashcards, multiple choice questions, hints, and explanations to excel in your certification journey. Master your knowledge and boost your exam readiness.

Multiple Choice

What is the minimum general lighting load for a 11,000 sq-ft courthouse?

Explanation:
The essential idea is to size the minimum general lighting load using the occupancy’s per-square-foot rating and the total area. For a courthouse, the NEC provides a general lighting load factor of 1.4 VA per square foot. Multiply by the area: 11,000 ft² × 1.4 VA/ft² = 15,400 VA. This 15,400 VA is the minimum lighting load used for service sizing, not the exact installed load. Other values would correspond to different per-square-foot factors (e.g., 3.0 VA/ft² for some office-type spaces) and don’t match the courthouse rating.

The essential idea is to size the minimum general lighting load using the occupancy’s per-square-foot rating and the total area. For a courthouse, the NEC provides a general lighting load factor of 1.4 VA per square foot. Multiply by the area: 11,000 ft² × 1.4 VA/ft² = 15,400 VA. This 15,400 VA is the minimum lighting load used for service sizing, not the exact installed load. Other values would correspond to different per-square-foot factors (e.g., 3.0 VA/ft² for some office-type spaces) and don’t match the courthouse rating.

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