What gauge?

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Oct 4, 2012 | 12:28 AM

#16

Radi

CF Veteran

Joined: Apr 2012

Posts: 5,302

Likes: 23

From: Wisconsin

Model: Cherokee

Quote:

Originally Posted by Gauge

The engine fuse block has 2 60A fuses running in parallel, so i presume from the factory... that is how it was done. I am under the impression that having these fuses in parallel; 60A is enough to justify the amperage flowing through but having 2 in parallel allows more wattage to pass through without killing a single 60A fuse. I do, however, agree that I would think 1 120ishA fuse would have been justifyable but apparently Jeep didn't think so.

You're right. I pulled up a drawing for the '95 and there are a pair of fuses in parallel. 96 forward uses a single 125A fuse. I assumed they all used the single 125.
In theory parallel 60A fuses will allow 120A to pass, assuming each fuse sees an equal current division- which they should as long as neither develops a bad connection somewhere.

For 120 Amps, I'd consider #6 deficient (even though that is OEM gauge) and be more comfortable with at least #4. Of course there is no downside to using #2 or #0.
Not a bad idea to upgrade the related ground wires to a matching gauge while you're at it.