NEC Sections 422.30 through 422.35 allow which of the following disconnecting means for fixed appliances not over 300 VA or 1/8 horsepower?

NEC Sections 422.30 through 422.35 allow which of the following disconnecting means for fixed appliances not over 300 VA or 1/8 horsepower?

• A. Branch-circuit breaker
• B. Attachment plug cap
• C. Separate disconnect switch
• D. All of these

Answer: (D)

For small fixed appliances rated not over 300 VA or 1/8 HP, the electrical code allows flexibility in how you isolate the appliance for service. Specifically, the disconnecting means can be one of several approved options, not just a single dedicated switch. You can use a branch-circuit overcurrent device (like the circuit breaker) as the disconnecting means, so the device that protects the circuit also serves to isolate the appliance. You can also provide an attachment plug and receptacle, allowing you to unplug the appliance to disconnect it. Finally, you can install a separate disconnect switch dedicated to the appliance for isolation during service. This range of options makes sense because the load is small, so simpler methods of disconnect are practical and cost-effective, while still meeting the requirement that the appliance be readily operable and isolatable. Therefore, all of these methods are permitted as disconnecting means for these small fixed appliances.

For small fixed appliances rated not over 300 VA or 1/8 HP, the electrical code allows flexibility in how you isolate the appliance for service. Specifically, the disconnecting means can be one of several approved options, not just a single dedicated switch.

You can use a branch-circuit overcurrent device (like the circuit breaker) as the disconnecting means, so the device that protects the circuit also serves to isolate the appliance. You can also provide an attachment plug and receptacle, allowing you to unplug the appliance to disconnect it. Finally, you can install a separate disconnect switch dedicated to the appliance for isolation during service.

This range of options makes sense because the load is small, so simpler methods of disconnect are practical and cost-effective, while still meeting the requirement that the appliance be readily operable and isolatable. Therefore, all of these methods are permitted as disconnecting means for these small fixed appliances.