What is the allowable voltage for a household range's demand load calculated as?

• A. 220V
• B. 240V
• C. 250V
• D. 260V

Answer: (B)

The allowable voltage for a household range's demand load is typically calculated as 240V. This value is standard in many residential electrical systems for kitchen appliances, including ranges and ovens.

The 240V supply is derived from the split-phase service provided in most North American homes, which allows for appliances that require higher voltage to operate efficiently and effectively. Ranges are designed to work optimally with this voltage level, ensuring proper cooking temperatures and appliance longevity.

Other voltage values such as 220V, 250V, and 260V are not commonly used or recognized as standard operating voltages for household ranges. They might represent either historical standards or devices used in specific industrial applications but do not reflect the typical residential configuration. Therefore, the choice of 240V aligns correctly with current electrical codes and practices for residential ranges.