circuit breaker

Submitted: Wednesday, Feb 03, 2010 at 18:34
ThreadID: 75734 Views:3437 Replies:5 FollowUps:3
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hi all
I have a gq diesel patrol I am running a power cable to supply power to a cp.
I know you are supposed to get the circuit breaker as close as possible to the battery, I have had gas put on the vehicle and this has left no room near the battery. The closest point is 45cm away.Do you think this is to risky ?
My other thought would be to get a shorter over flow bottle and place it there. Is the size of over flow bottle critical ?
Thanks in advance

Al
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Reply By: ABR - SIDEWINDER - Wednesday, Feb 03, 2010 at 18:41

Wednesday, Feb 03, 2010 at 18:41
What is a CP ?

Compressor, Charge Point ?

Here is a link to fuse basics. Fuse-location
AnswerID: 402482

Reply By: al - Wednesday, Feb 03, 2010 at 18:45

Wednesday, Feb 03, 2010 at 18:45
sorry cp sould be C. T. camper trailer
AnswerID: 402483

Follow Up By:- Wednesday, Feb 03, 2010 at 19:12

Wednesday, Feb 03, 2010 at 19:12
Al,

I have an old rig (84 Paj 4 banger) with LPG and a winch fitted.
Originally, the winch control box was directly connected to the battery via a 1.5m long heavy duty wire.
To make things safer, I installed one of those chunky rotational switches in series, as close to the battery as possible, but this was still about .5m away.
Because you can't be cautious enough with unfused wires, I ended up pulling some flexible 20mm conduit (the grey stuff you see in 240VAC installations) over it.

Another suggestion: I don't know what rating your c/b is, but if it's below 30A, you could wire an additional small in-line blade fuse holder (comes with PVC cap) close to the battery plus terminal.
I think you can get these blade fuses with a rating up to 30A?

Overflow bottle: bare minimum volumetric size depends on the difference between coolant hot/cold volumes (you might have to use a marker pen on the plastic container to get an idea of this).
If you can, get a shorter, but deeper o/f bottle wich offers similar volume to the original, or mount the o/f bottle somewhere else with an extended piece of rubber hose.

Hope there is something useful in it for you.

Best regards, batteryvalue
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FollowupID: 671971

Reply By: ABR - SIDEWINDER - Wednesday, Feb 03, 2010 at 19:30

Wednesday, Feb 03, 2010 at 19:30
45cm is fine for the camper trailer cable breaker position, just ensure the 45cm of cable is well positioned and in split tube if needed.



Regards

Derek from ABR

AnswerID: 402488

Reply By: Dion - Thursday, Feb 04, 2010 at 07:43

Thursday, Feb 04, 2010 at 07:43
Or you could fit one of these:

http://www.projecta.com.au/catalogue/cid/35/asset_id/84

Then the fuses are within a bees whiska of the positive terminal of the battery. I have one on each of my Rodeo's. The aux terminals you can have either a 30A or 60A fuse.
Each of these have outlasted the original batteries.
It's only my opinion, but I highly reccomend these.

Cheers,
Dion.
AnswerID: 402565

Reply By: Member - Mike DID - Thursday, Feb 04, 2010 at 10:18

Thursday, Feb 04, 2010 at 10:18
I'll be putting a 200 amp fuse right beside the battery terminal and then a 75 Circuit Breaker inside where it's protected from from water and heat.

Jaycar sells these big Wafer fuses with bolt holes quite cheaply now - 200 Amp Wafer Fuse

I'll bolt it straight in and cover it with heatshrink as it's unlikely to need replacing.

They're available from 80 to 250 amp.
.
AnswerID: 402600

Follow Up By: ABR - SIDEWINDER - Thursday, Feb 04, 2010 at 23:19

Thursday, Feb 04, 2010 at 23:19
I would rather use a fuse holder that you can see the fuse, if you heat-shrink it you will have no idea of its condition.

I would use a ANL use holder.



or a trip breaker.



or even a Maxi fuse holder.



or a std breaker.



Regards

Derek from ABR
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FollowupID: 672228

Follow Up By: Member - Mike DID - Friday, Feb 05, 2010 at 06:43

Friday, Feb 05, 2010 at 06:43
I agree that normally your solutions are the only way to go.

But the 200 amp fuse would only blow if there were a short-circuit on the cable between the battery and the circuit breakers inside the car.

The circuit breakers are rated much lower than the fuse, so any overload or short-circuit at the sockets would trip the breakers, not blow the fuse.
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FollowupID: 672242

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