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LED wiring catching fire
Hi
I’d like to ask if anyone else has seen 12 volt LED wiring that has passed through an aluminium or metal panel, and has shown signs of burning at the point at which it passes through the board ?
I’ve seen this before and wondered if anyone knows why this happens please.
Some LED’s that we have been asked to install come with red/black wire that has a substantial plastic outer casing with an inner foil that surronds the red/black wires
Some other wires are just plan red/black wire, the sort of wire that you’d use for wiring low volotage hi-fi speakers
Does anyone know if the LED’s when in use, make the cable/wiring emit electrical radiation, enough that would potenially make the cable melt at the point that they pass through a conductive materail, for example a aluminim composite back board
Hopefully there’s a physics expert out ther that can help with this
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2 Replies
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Most likely the positive (+) red or both wires have had the insulation nicked by rubbing / pulled tight through the drilled hole so creating a short. There’s virtually no electromagnetic radiation given off by low voltage DC cables with a constant voltage so no chance of induced fields or heat buildup.
Check the rating of the cable v’s the current output of the transformer / expected current drawn by the LEDs. If it’s borderline over then the cables will run warm and soften the insulation… Thinning it down when under stress for eventual failure.
Dave
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its why even on low voltage grommets should be used when cables pass through panels
Kev
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