How big Circuit breaker - Team Camaro Tech
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post #1 of 3 (permalink) Old Feb 10th, 09, 04:34 PM Thread Starter
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Bob
 
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Location: Littleton, Co.
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How big Circuit breaker

I am moving my optima to the trunk. I plan on installing a Circuit breaker in-between the battery and a switch. I am trying to figure out the size of the breaker. I have two fans, 40 amps each, fuel injection, I think it is 30 amps, I will check, The rest is normal 69 camaro electrics. Wiper, lights, heater. Any ideas on how big I should size the Breaker? The amp and subwoofer amp are on a seperate battery in the trunk. They are connected to the other thru a battery isolator. The amp and sub woofer are 110 amps combined. I have a 100 amp breaker on this battery.

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69 Camaro, Air Ride Suspension,
Procharged HO 454, 700R4, 12 bolt with Yukon axles, 3:73 gears posi, Pypes 2.5" X pipe with Borla XS mufflers. Retrotek Speed EFI, Ridetech suspension.
Rushforth rated X with Toyo tires. MSD 6 ignition.
Wilwood 6 piston Dynalite disc brakes with Hydratech booster.

Last edited by MileHigh69; Feb 10th, 09 at 09:55 PM.
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post #2 of 3 (permalink) Old Feb 12th, 09, 02:58 PM
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Trevor
 
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Re: How big Circuit breaker

The largest amp draw is your starter, my 454 starter draws 588 amps for the first instant then cranks at about 190 amps. I have a MEGA FUSE fuse holder with a 250 amp slow blow fuse. No problems so far.
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post #3 of 3 (permalink) Old Feb 13th, 09, 07:22 AM Thread Starter
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Bob
 
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Re: How big Circuit breaker

I currently have a 200 amp circuit breaker on the main battery circuit. I will try this. I didnt realize the starter drew that much current. However it is only for a short duration. I have the fans for the radiator wired at the junction for the batteries, the starter, the alternator. I was thinking of moving the fan junction over to the horn relay connection since this is where the alternator picks up the remote sense. What do you think?

_______________________________
69 Camaro, Air Ride Suspension,
Procharged HO 454, 700R4, 12 bolt with Yukon axles, 3:73 gears posi, Pypes 2.5" X pipe with Borla XS mufflers. Retrotek Speed EFI, Ridetech suspension.
Rushforth rated X with Toyo tires. MSD 6 ignition.
Wilwood 6 piston Dynalite disc brakes with Hydratech booster.
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