The maximum branch circuit voltage rule applies to which spaces?

• A. Dwelling units and guest rooms or suites in hotels or motels
• B. Only dwelling units
• C. Only guest rooms
• D. All commercial spaces

Answer: (A)

The rule is focused on spaces where people live or stay and regularly use electrical outlets. Dwelling units and guest rooms or suites in hotels or motels are treated as living spaces for electrical purposes, so they fall under this limitation. Limiting the maximum branch-circuit voltage in these areas helps keep common devices on a familiar, safer voltage level (typically 120 V) and reduces shock risk and wear on equipment. Other spaces, like general commercial areas, are governed by different voltage rules because they often use higher voltages or different distribution setups. So the spaces covered by this rule are dwelling units and guest rooms or suites in hotels or motels.