Circuit Tester for Electrical Safety is a very simple and inexpensive plug-in device that should be available in all science departments to check electrical circuits.
A very simple, inexpensive, plug-in device that should be available in all science departments to check electrical circuits. Schools will commonly find five unsafe electrical conditions—open ground, open neutral, open hot, hot/ground reverse, hot/neutral reverse. Each of the five conditions is measured using this simple device. The teacher simply plugs in the circuit tester and reads the lighted, coded indicators. Corrective steps should be taken if an incorrect circuit is found.
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