What is the minimum branch-circuit demand for one wall-mounted oven with a nameplate rating of 20A at 240V?

What is the minimum branch-circuit demand for one wall-mounted oven with a nameplate rating of 20A at 240V?

• A. 3,840 W
• B. 4,800 W
• C. 6,000 W
• D. 8,000 W

Answer: (B)

For sizing a branch circuit for a single fixed cooking appliance, you use the appliance’s nameplate rating as the load. The oven is rated at 240 V and 20 A, so its maximum power draw is 240 × 20 = 4,800 watts. The minimum branch-circuit demand is therefore 4,800 watts. This reflects supplying the full rated load of one unit; no reduction or extra factor is applied for a lone appliance. The other values come from applying different factors that don’t apply to a single non-continuous cooking appliance.

For sizing a branch circuit for a single fixed cooking appliance, you use the appliance’s nameplate rating as the load. The oven is rated at 240 V and 20 A, so its maximum power draw is 240 × 20 = 4,800 watts. The minimum branch-circuit demand is therefore 4,800 watts. This reflects supplying the full rated load of one unit; no reduction or extra factor is applied for a lone appliance. The other values come from applying different factors that don’t apply to a single non-continuous cooking appliance.