melted qiuck disconnect

[stick man]

Melted my quick disconnect on the ground side friday and have no idea why.
Was running LN 25 off a ranger 305 24 volts 50ft of 2/0 cable with 2ft pig tail on ground 300 amp clamp melted the rubber right off the disconnect on the pig tail side. Any ideas?? Thanks

[Jim-TX]

I'm thinking that it's either too much amperage for the connection or the connection was loose. Both will produce a lot of heat.

[J hall]

What Jim said. And sometimes the cable gets loose or corroded in the coupler

[FusionKing]

Yup....it was the point of highest resistance somewhere close. I have had little things like that drive me bananas! Esp. on mig ground cables.

[stick man]

Thanks guys must have been loose or just worn out replaced with new set no more troubles.