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HVAC sytem, I cut a wire outside

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HVAC sytem, I cut a wire outside

Old 06-07-2015, 04:59 PM
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Default HVAC sytem, I cut a wire outside

Today I was doing some yard work and saw a couple of small saplings growing beside our downstairs HVAC unit.

Well in my haste to cut them I cut a wire and the unit cut off, at first I thought it was some type of ground wire but I pulled the outside breaker and even went inside to pull the main breaker to the unit (I HATE electrical stuff)

Anyway I got my electrical repair stuff out and then when I looked at the wire it actually appear to be the main control wire, there are 7-8 wires inside it and all different colors

I am correct to assume as long as I match colors and wrap everything real well in electrical tape and make sure nothing touches each other as naked wires should this be ok until I get a repairman tomorrow so we can run HVAC tonight .

Plus while i was in the middle of this "repair" a huge downpour happened and now I got to make sure every thing is very dry of course
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Old 06-07-2015, 05:01 PM
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You are on the right path, and don't worry about wrapping wet wires. They'll get over it, and the electrons don't care so long as there's a solid, twisted connection.

You did good, Mr. Price
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Old 06-07-2015, 05:03 PM
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...uh, I might be wrong, though. My training was in SWAG engineering.
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Old 06-07-2015, 05:07 PM
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All low volt, you'll do fine! (At least it should be...)
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Old 06-07-2015, 05:14 PM
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Originally Posted by skibum View Post
All low volt, you'll do fine! (At least it should be...)
This sounds liike low voltage wiring probably blue ,greem ,yellow, red, and white but should only need 2 wires unless it is a heat pump or other than a typical condensor.
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Old 06-07-2015, 05:16 PM
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No word from TP.................some one need to check on him
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Old 06-07-2015, 05:17 PM
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first clue that wires are low voltage is their size. Teeny wires equal teeny shock, if at all.
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Old 06-07-2015, 05:43 PM
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When you get the real repair done, have them run that wire in conduit to prevent similar incidents in the future. You KNOW those saplings are coming back, right?
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Old 06-07-2015, 05:59 PM
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If you use shrinkable butte connectors there may be no need for a repairman. Strip the cut wires back, crimp down butte connectors, heat until sealed and go over the whole repair with liquid electrical tape. It would be best to shut off your air handler before hand to avoid a short and burning out your transformer. Those are 24 volt and even though you can feel the current if you complete the circuit with your body, I've never heard of any one ever electrocuting themselves with low voltage. Also, I like the idea said above about encasing the wire in pipe. Even covering the wire with black plastic flex (like you see on boat wiring sometimes) will offer some protection from further accidents. It usually has a slit on the side to enable you to push over the wire without having to separate the wire.
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Old 06-07-2015, 06:04 PM
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As the poster above said make sure to kill power to your indoor air handler so you don't fry your transformer and wire nut the wires back with blue wire nuts and tape to keep moisture out.
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Old 06-07-2015, 06:25 PM
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Posters above are correct. If your system does not come back on, you may have blown the fuse for the transformer(some manufactures use fuses some do not). You did cut a live 24 volt circuit, hopefully just rewire and be good to go.
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Old 06-07-2015, 06:39 PM
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Originally Posted by Huntersun View Post
No word from TP.................some one need to check on him




Well got them all back together and ADMIRAL HAS AC

Called buddy in neighborhood that is electrician and he said that was low voltage wires and just thermostat control more than likely since the wires were so small

I thought about just using the heat shrink connectors like I use on stuff on my boat but did not have any, guess I could pick some of those up and just wrap it all up when done.

I also like the idea of putting the wire in some type of conduit too, good idea
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Old 06-08-2015, 04:00 AM
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Originally Posted by Reel_Tight View Post
As the poster above said make sure to kill power to your indoor air handler so you don't fry your transformer and wire nut the wires back with blue wire nuts and tape to keep moisture out.

x2

they should be connected with small wire nuts since they are solid conductors.
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Old 06-08-2015, 05:59 AM
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They actually sell wire nut connectors that are waterproof. Use them for irrigation systems. Filled with a silicone.
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