Panelboards equipped with snap switches rated at 30 amps or less shall have overcurrent protection rated at not more than ___ amps.

Panelboards equipped with snap switches rated at 30 amps or less shall have overcurrent protection rated at not more than ___ amps.

• A. 100
• B. 150
• C. 200
• D. 225

Answer: (C)

When a panelboard uses a snap switch rated at 30 A or less, the main overcurrent protection feeding that panel must not exceed 200 A. This limit keeps the protection device within the panel’s listed capacity and prevents overstressing the internal switch and bus. Among the given options, 200 A is the maximum allowed for this scenario, while 225 A would violate the rule; smaller values (like 100 A or 150 A) would still be compliant but are not the maximum permitted.

When a panelboard uses a snap switch rated at 30 A or less, the main overcurrent protection feeding that panel must not exceed 200 A. This limit keeps the protection device within the panel’s listed capacity and prevents overstressing the internal switch and bus. Among the given options, 200 A is the maximum allowed for this scenario, while 225 A would violate the rule; smaller values (like 100 A or 150 A) would still be compliant but are not the maximum permitted.