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You are watching: How to check continuity in a long wire

Does anyone know the name or have actually a connect to an electrical experimentation gadget for verifying home-runs to electric box?


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If you are trying to label or uncover a wire, the typical means is to usage a wire tracer. One end is a tone generator, the various other end is a detector that deserve to hear those tones.

You deserve to gain low-voltage ones, which can be offered for (unpowered) electrical cables, ethernet/phone and cable:

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You can likewise obtain specialty live-voltage tracers, many type of of which have the right to be offered if the circuit is powered:

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If you"re actually trying to acquire continuity (and acquire an ohms value) one way is to use a standard multimeter with a lengthy expansion cord. This just functions if the circuit is unpowered (otherwise you risk blowing up your meter and/or electrocuting yourself). Plug in the expansion cord at one end, and also bring the various other end to the resource (eg, close to the panel), then you deserve to usage one of the multimeter probes on the extension cord and the various other on the wire you"re experimentation.


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answered Mar 10 "17 at 19:00
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