Forum Discussion
Artum_Snowbird
Mar 25, 2015Explorer
Need some more information please. Does the 60A fuse blow out instantly, or does it take some time. One is a short circuit, the other is an overload.
Have you removed all the fuses in the subpanel and then tested to see if the 60A fuse stays on? If it does stay on, then try putting one of the items in the panel at a time. If it stays OK for wipers, then try the next smallest load, then see if it stays on.
The fuse usually is placed in the hot feed to the panel. If you have a loose connection on either the hot feed to the panel, or the neutral return from the panel, either one can cause a huge overload.
You can determine whether it is the positive feed, or the negative return wire by using one leg of your jumper cable to the battery negative, and the other to the panel negative. If that keeps the fuse intact..it is the negative return with the bad connection.
To check the positive feed, connect one jumper cable leg to the 60A fuse, and the other to the positive on the panel.
Another good method of finding where there might be a loose hot spot causing the overload if it stays on for a while is to use your laser temperature sensor. Point it at the panel and the main positive and negative connectors at each end. If there is a loose spot, it will be very hot.
Hope this helps.
Have you removed all the fuses in the subpanel and then tested to see if the 60A fuse stays on? If it does stay on, then try putting one of the items in the panel at a time. If it stays OK for wipers, then try the next smallest load, then see if it stays on.
The fuse usually is placed in the hot feed to the panel. If you have a loose connection on either the hot feed to the panel, or the neutral return from the panel, either one can cause a huge overload.
You can determine whether it is the positive feed, or the negative return wire by using one leg of your jumper cable to the battery negative, and the other to the panel negative. If that keeps the fuse intact..it is the negative return with the bad connection.
To check the positive feed, connect one jumper cable leg to the 60A fuse, and the other to the positive on the panel.
Another good method of finding where there might be a loose hot spot causing the overload if it stays on for a while is to use your laser temperature sensor. Point it at the panel and the main positive and negative connectors at each end. If there is a loose spot, it will be very hot.
Hope this helps.
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