Test switches are designed and manufactured to allow quick and easy multi-circuit testing of switchboard relays, meters and instruments by any conventional system.

How do you test a switch in a circuit?

Single-pole switch: Clip the wire of a continuity tester to one of the screw terminals, and touch the other terminal with the tester probe. Turn the switch lever on and off. The tester should light up when the switch lever is in the on position but should not light up when the switch lever is off.

Why do you shunt a CT?

Shunt advantages First, they are simple current sensors that do not have any magnetic components. As a result, they are not susceptible to magnetic tampering, unlike current transformer (CT) sensors. This advantage is why shunts are commonly used as current sensors in markets where energy theft is a concern.