Switches and circuit breakers used as disconnecting means to appliances shall be ___?

• A. factory installed only
• B. of the fusible type
• C. of the indicating type
• D. of the tripping type

Answer: (C)

When choosing a device to disconnect power to an appliance, it’s crucial to be able to tell at a glance whether the circuit is energized. An indicating-type switch or circuit breaker provides that visible status—the handle position or an indicator shows whether the disconnect is open or closed. This immediate visibility enhances safety for anyone servicing the appliance, because you can confirm isolation before work and verify that power is off.

Factory installation is not a strict requirement here—disconnecting means can be installed in the field if needed. A fusible type device interrupts current with fuses, but that doesn’t guarantee a clear open/closed indication. A tripping type device may respond to overload, but it doesn’t ensure the disconnect’s status is visible. The indicating type specifically accomplishes the essential need: a clear indication of the disconnect’s status.