50 amp fuse

Submitted: Thursday, Aug 06, 2009 at 21:21
ThreadID: 71275 Views:2942 Replies:5 FollowUps:2
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Evening all a question about 50 amp fuses, I am setting up the batteries in the camper trailer to be charged via the wagon when on the move, I am about to install a 50 amp fuse in line at the c/t end of things when looking at the fuse it has the words "bat" at one end and "aux" at the other. Now am I right in assuming that the " aux" applies to the batteries in the camper trailer and the "bat" is referring to the wagon?
Cheers in advance.
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Reply By: ABR - SIDEWINDER - Thursday, Aug 06, 2009 at 21:45

Thursday, Aug 06, 2009 at 21:45
Hi Roger

You must be referring to breakers.

They are thermal type.

Just connect them battery side to the battery in both the car and trailer so it protects the cable in both directions.

The 'aux' or 'load' on some breakers will be the cable between the batteries. (IE: The cable run of 7 or 8 meters via the Anderson plugs)

Regards

Derek from ABR
AnswerID: 377876

Follow Up By: ABR - SIDEWINDER - Thursday, Aug 06, 2009 at 21:48

Thursday, Aug 06, 2009 at 21:48
0
FollowupID: 645257

Reply By: Maîneÿ . . .- Thursday, Aug 06, 2009 at 23:33

Thursday, Aug 06, 2009 at 23:33
Hope you also have put a fuse also at the *other* battery too ?

I would think the 'bat' refers to the *in* battery (+) terminal end
with the 'aux' refering to the Accessories or *out* side of the fuse ?

Maîneÿ . . .
AnswerID: 377898

Reply By: Member - Roger & Maree (WA) - Friday, Aug 07, 2009 at 06:35

Friday, Aug 07, 2009 at 06:35
Thanks Derek and Mainey yeah the car is has a fuse at the battery just putting one at the other end,
Cheers
AnswerID: 377912

Reply By: Dion - Friday, Aug 07, 2009 at 07:47

Friday, Aug 07, 2009 at 07:47
Why does a fuse specify which end is the source "bat" and which end is the load "aux"?
Fuses are ambidextorous, they work both ways.

Cheers,
Dion.
AnswerID: 377924

Follow Up By: Maîneÿ . . .- Friday, Aug 07, 2009 at 07:53

Friday, Aug 07, 2009 at 07:53
The reply is relevant to this thread

some do
some don't

Maîneÿ . . .
0
FollowupID: 645284

Reply By: Racey - Wednesday, Aug 12, 2009 at 13:05

Wednesday, Aug 12, 2009 at 13:05
Hi,

Polarity is not an issue with fuses. However, it can be a major issue with circuit breakers as the magnetic field can(will) interfere with interrupting the arc when the breaker opens. Always connect with the correct polarity.

Cheers

Racey
AnswerID: 378645

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