I know with my multi meter set to Ohm meter I can determine if a wire is the same by touching the red/black to the same wire. My multi-meter only has a cord that is around 1 foot long. I need to determine if one end of a wire is the same as another end of a wire, but it is around 100 ft long, so my ohm meter will not help me. What can I use to get the answer?
2007-07-21 15:28:17 · 4 answers · asked by simple_one71 1 in Cars & Transportation ➔ Car Audio
well you can some small in-expensive wire and connect it to one end of the wire and walk it over to the other end then you can use a multimeter, another option is is there another wire that runs the same length with the wire you want to check use a alligator clip and connect one end of them together and use your meter on the opposite end, lastly if the wire is contained inside a metal structure that either end could be connected to the same ground, IE frame of aircraft, car, piping (this last one is unlikely if in a home) you could ground one end and then go with the meter on the other end and check continuity to ground, then go back and disconnect the other side from ground and test the original side again it should not be grounded anymore.
2007-07-21 15:40:33 · answer #1 · answered by smokeycrew37 1 · 0⤊ 0⤋
Most digital meters these days have a continuity checker. You can use that on a 100ft wire. It usually gives a tone if the resistance is less than about 100 ohms.
A 100ft wire only has about 1ohm of resistance, or less, so you can check it this way.
2007-07-21 15:31:09 · answer #2 · answered by mikeburns55 5 · 0⤊ 0⤋
A continuity tester, or a multi-meter with this feature will help you.
2007-07-21 15:31:10 · answer #3 · answered by Dichro 512 2 · 0⤊ 0⤋
Disconnect the end you can't reach and ground it. Put your + lead on the end you can reach and ground the - lead.
2007-07-21 15:46:31 · answer #4 · answered by ToolManJobber 6 · 0⤊ 0⤋