Melted fuse holder


#1

Somehow my fuse holder melted last Friday. The 150A fuse is alright.I’m using 8AWG cables.

Could it be that the wire connection with that little scrub screw is a bad construction for connecting the cables to the fuse? How can I prevent that heat next time?


#2

I have the exact same holder. My one had a little metal pipe with a hole drilled into the wall. (Its about 6mm high and 5mm diameter.) I inserted my cables into that pipe and soldered them on. The grub screw pushes that whole pipe into the connector. It was too long with all the solder, so I shortned it.

I didn’t test it yet. Hope that still helps you.


#3

Bugger, It will be a bad connection its actually pretty common fault, need to pack it out with more copper to fill the whole hole or use a boot lace crimp then crank the grub screw real tight. See crimp below

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSOuPBeA6q53FajUP5KjjjnEEoQ2AULEuZsgAsXoxnPpjgE_2nbNhpmWJhWHQ


#4

I bought this one yesterday. Like you guys wrote I will solder the wire next time in addition.

http://s.aliexpress.com/3uiAnABV


#5

It’s matter of contact surfaces, if it’s a grub that holds and do the contact… the resistance raise and it melts. I’ve seen melted bolts fuse holders due to the plastic that held one of the bolt deformed by heat…then the contact got loose enought to cause some ohm of resistance and at that point…the whole thing start smoking! I don’t know your fuse holder but in the worst scenario…solder everything.