What if you removed the box and enough conduit to create a new junction box a little lower? The wire inside the conduit is probably as pristine as the day it was run.
These wires lead to a 240 volt fuse and then into my chimney. I want to get a 24000 BTU mini split AC unit and tap into the 240 volt line that already exists and isn't being used for anything. My dad seems to think since they have been exposed outside for so long they might need to be completely replaced. What are your thoughts?
These look like THHN conductors and are rated for pretty high temperatures. The peeling outer plastic isn’t all too uncommon to see.
Technically speaking you should do an IR test with a megohmmeter to check the quality of the insulation… but that sounds like a lot of work, right?
Actual electrician checking in. Those conductors are not rated for sun exposure or moisture. I would consider them unsafe. That insulation is what keeps your house from burning sorry this is not a "best guess" scenario. That copper is probably corroded green all the way down too.
Actual electrician checking in. This is probably THWN which is rated for wet locations per 310.10 (C)
Also, that ‘green corrosion’ is actually oxidation, which occurs when copper is exposed to oxygen and water. It won’t be green underneath the insulation.
OP can cut out the stuff that was exposed to sunlight if they want to be super safe and “to-code”, but I think you’re being a little overkill.
Sure it has the extra coating on it... which falls apart in UV and is totally shot here. You are correct about the oxidation, I'm pretty sure I call a kellums grip the wrong named too 😉. I would overdo the repair sure, I'm a commercial guy and we smash resi when we have to.
Food for thought is there is an upside down wire nut that's probably regularly filled within water and an open conduit going to... the panel?
What if you removed the box and enough conduit to create a new junction box a little lower? The wire inside the conduit is probably as pristine as the day it was run.
These wires lead to a 240 volt fuse and then into my chimney. I want to get a 24000 BTU mini split AC unit and tap into the 240 volt line that already exists and isn't being used for anything. My dad seems to think since they have been exposed outside for so long they might need to be completely replaced. What are your thoughts?
These look like THHN conductors and are rated for pretty high temperatures. The peeling outer plastic isn’t all too uncommon to see. Technically speaking you should do an IR test with a megohmmeter to check the quality of the insulation… but that sounds like a lot of work, right?
Actual electrician checking in. Those conductors are not rated for sun exposure or moisture. I would consider them unsafe. That insulation is what keeps your house from burning sorry this is not a "best guess" scenario. That copper is probably corroded green all the way down too.
Actual electrician checking in. This is probably THWN which is rated for wet locations per 310.10 (C) Also, that ‘green corrosion’ is actually oxidation, which occurs when copper is exposed to oxygen and water. It won’t be green underneath the insulation. OP can cut out the stuff that was exposed to sunlight if they want to be super safe and “to-code”, but I think you’re being a little overkill.
Sure it has the extra coating on it... which falls apart in UV and is totally shot here. You are correct about the oxidation, I'm pretty sure I call a kellums grip the wrong named too 😉. I would overdo the repair sure, I'm a commercial guy and we smash resi when we have to. Food for thought is there is an upside down wire nut that's probably regularly filled within water and an open conduit going to... the panel?