What is the demand load for a household range with a nameplate rating of 11.75kW?

• A. 6kW
• B. 8kW
• C. 10kW
• D. 12kW

Answer: (B)

To determine the demand load for a household range with a nameplate rating of 11.75 kW, it's essential to apply the demand factors outlined in the National Electrical Code for household cooking appliances. Generally, for household cooking appliances, the demand can be calculated by taking a percentage of the total nameplate rating, but there are typically maximum limits applied.

For a range with a nameplate rating of 12 kW or less, the demand might be calculated by taking a demand factor of 8 kW, regardless of the exact nameplate rating provided it's above the minimal threshold. In this case, since the range has a nameplate rating of 11.75 kW, applying the demand factor would round it slightly down to 8 kW, which aligns with the expected demands for residential cooking equipment.

Thus, 8 kW accurately reflects the calculated demand load for this range, considering standard practices in determining the electrical loads in household systems. This demand load allows for appropriate sizing of conductors and protection devices, ensuring not only compliance with electrical codes but also safety and efficiency in electrical installations.