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Neon TesterHome Electrical Safety Electrical Theory Electrician Practice Exams 2005 NEC Search Term IndexA handy inexpensive item to add to a tool box is the one dollar neon tester. It is useful to identify polarity in DC and identify the ungrounded conductor in AC circuits.For DC there is a polarity indicator. In AC simply hold one end of the tester between your fingers and touch the other end of the tester to the conductor to be measured. A slight glow will be present if you are on the ungrounded conductor.It never was a great tool for voltage measurement. But it did work. About as good was two light bulbs hooked in series. If both lit half way the circuit was 120. If both bulbs lit at full brightness, the circuit was 240. The only caution for that method was that both lamps had to be identical or at high voltage the higher resistance could explode. Not good.Sometimes the tester is made to be part of a screw driver. Sometimes it is made like a stick man with no arms.
Another type of neon tester is the receptacle outlet tester, a very useful tool for every electrician. This item, when plugged into an outlet, will give you detailed indication of how the receptacle is wired. Be sure to hold on to the instructions. The diagrams of conditions on the unit will wear off over time. Perhaps that is the time to get a new one. Anyway, it is also useful before plugging in an electric tool. If the wiring to the receptacle is incorrect, that might be something to fix before using the outlet.
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Ideal Circuit Testers & Receptacle Testers |
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(Model 61-035) |
(Model 61-051) |
(Model 61-500) |
(Model 61-501) |
Model 61-035 Circuit Tester Features:
Model 61-051 Circuit Tester Features:
Model 61-500 Receptacle Tester Features:
Model 61-501 Receptacle Tester Features:
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