The minimum feeder load for show-window lighting is _____ VA per linear foot.

The minimum feeder load for show-window lighting is _____ VA per linear foot.

• A. 100
• B. 150
• C. 200
• D. 250

Answer: (C)

The question tests the fixed minimum feeder load used for show-window lighting. In NEC calculations, storefront display areas have a minimum load of 200 VA for each linear foot of show window. This ensures the feeder size accounts for the bright, variable lighting typical in displays, even if the actual connected load is lower. To apply it, multiply the length of the storefront window by 200 VA per linear foot to get the minimum feeder load. For example, a 15-foot show window would require at least 15 × 200 = 3,000 VA. Other numbers would not meet the NEC’s required minimum per linear foot for show-window lighting, which is why 200 VA per linear foot is the correct choice.

The question tests the fixed minimum feeder load used for show-window lighting. In NEC calculations, storefront display areas have a minimum load of 200 VA for each linear foot of show window. This ensures the feeder size accounts for the bright, variable lighting typical in displays, even if the actual connected load is lower.

To apply it, multiply the length of the storefront window by 200 VA per linear foot to get the minimum feeder load. For example, a 15-foot show window would require at least 15 × 200 = 3,000 VA.

Other numbers would not meet the NEC’s required minimum per linear foot for show-window lighting, which is why 200 VA per linear foot is the correct choice.