Safety Switches and Disconnects - CEU
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A double throw safety switch is used to manually switch from one load circuit to another.
This type of disconnect is used for: Residential service entrance, Outdoor shut-off for residential air conditioning unit, Temporary service at a construction site, Outbuilding sub-feed.
_________ rotary disconnects are most often sold to original equipment manufacturer (OEM) customers, who then install the switches into their own control panels.
A switch with no fuses is referred to as a ____________ safety switch.
The three main types of air conditioning disconnects are fused, non-fused and ______.
The National Electrical Code (NEC) requires that all hot tub and spa pumps be protected by a ground fault interrupter and a disconnect switch mounted within ____ feet of the hot tub or spa.
This device is used in applications where users need local circuit protection, for example next to a conveyor belt. 
This enclosure type is intended for indoor or outdoor use, where corrosion resistance is required and is constructed of stainless steel, polymeric, or fiberglass. 
A safety switch can be open style without an enclosure.
A switching device is an electrical device that provides a safe means to open and close a circuit.