OMG.
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OMG. #OffGrid #DIY #Solar folks on some of these groups are constantly trying to talk themselves and each other into new ways to burn down their homes and RVs - with an assist from sneaky wire companies who sell their cables with 130C+ rated insulation as welding cable with ridiculously high amp ratings. Charts like this welding cable sizing tool get shared that will burn down their solar systems.
Welding is a completely different application that sees short bursts of current in a single wire that's being held by someone in welding gloves and other protective gear - NOT a wire that sees CONSTANT currents and is laying against combustible materials, equipment, and other wires. It's OK to use welding cable - even good, because its insulation is often rated for 130C or more. But you can't run the 130C amp rating in that wire on a solar system. 130C is 266F. The cable insulation won't melt, but everything it touches will. The most current you should run in a solar system would be the 90C ampacity rating from the NEC for residential use, and preferably the 75C rating to be safe.
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OMG. #OffGrid #DIY #Solar folks on some of these groups are constantly trying to talk themselves and each other into new ways to burn down their homes and RVs - with an assist from sneaky wire companies who sell their cables with 130C+ rated insulation as welding cable with ridiculously high amp ratings. Charts like this welding cable sizing tool get shared that will burn down their solar systems.
Welding is a completely different application that sees short bursts of current in a single wire that's being held by someone in welding gloves and other protective gear - NOT a wire that sees CONSTANT currents and is laying against combustible materials, equipment, and other wires. It's OK to use welding cable - even good, because its insulation is often rated for 130C or more. But you can't run the 130C amp rating in that wire on a solar system. 130C is 266F. The cable insulation won't melt, but everything it touches will. The most current you should run in a solar system would be the 90C ampacity rating from the NEC for residential use, and preferably the 75C rating to be safe.
@exador23 This kind of domain knowledge is what AI does not have and cannot reason about. It's also why "doing your research" should also include talking to an actual expert, not just someone who says "this should work".
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R relay@relay.mycrowd.ca shared this topicR relay@relay.infosec.exchange shared this topic
