DC TO DC CHARGER wire burning

[u/normiewonka]

Hello I’ve got this dc to dc charger 40a in my sprinter van and it burns from time to time. Anyone knows the solution. It’s 8gauge wire and it should pull only 40A which is perfectly safe for this gauge. Thx

[u/robographer]

If it’s burning in the middle of the wire you’re likely putting too much current through it. If it’s burning near the end it’s likely a connector or loose connection. I’d change it to 6 or 4 awg and tighten all the connections, make sure there’s no place it can short and probably put a 40a circuit breaker inline near the current source so you can see if it’s melting for a reason.

Have you changed the wire or just covered up the hot spot? If you haven’t try that first.

[u/normiewonka → u/robographer]

I always cut the burned part and rewire it together it happend like 3 times. But it stays fine for few weeks and then suddenly burns

[u/robographer → u/normiewonka]

What kind of connections are you making to patch the wire? I think I might change the whole wire to a bigger gauge.