hi,
ive just bought an 8 1/2 gallon tank and 2 air zenith ob2 compressors from hornblasters ( thanks garratt ;0) )
they are going to be mounted in the rear of my car.
the battery is at the front of the car,im guessing im going to be using at least somewhere between 10 - 15 foot of power cable from the battery.
hornblasters have supplied me with enough 4 guage wire to run from the front to the back, but i had some confusion with the fuse holders so asked about the wiring.
now… im so confused on what to do:confused:
please help me out here id be very gratefull…
one persons telling me i need to run 2 lengths of 4 guage wire down from the battery ( 1 to each compressor )
and somebody else tells me theres no need…? and that just 1 length is more than enough to run both compressors…? as there only drawing a maximum of 35amps each.
im also told 4 guage wire can take up to 100amps is this true?
can you kind people please put my mind at rest and tell me whats best to do please? i dont want the wiring to burn out or get too hot…
Our compressor typically draws 150 to 160 amps and we provide 10 feet of 4 gauge welding wire. Our engineer says 10 feet can handle 200 amps. It will get just a little warm at 200 amps. You can hold the wire in your hand all day.
You can probably use a 100 amp fuse for both or 50 for each but consult the owner’s manual or the company first.
You might even want to use 2 gauge or 1/0, and a 200a fuse
The only problem you would have is trying to find a place to run the water hose sized cable in your car.
Im running 2 Viair 444’s and all I did was run a single 4ga to the rear to a distribution block then I split it off to dual 6ga,one for each comp with a 50amp fuse for each.0/ga and 2 gauge is crazy overkill…
I was told to run two 10ga one for each compressor, but instead I did a single 6ga for both and hasn’t even got warm at all. If anything the 10ga from the comps will melt throughout before the 6ga wire does. Just to be safe I put a 60amp breaker at the battery then I did dual fuse at the comps 30 amps each haven’t had any problems at all.
Thats brilliant guys…
thanks ever so much for all your help and replys…
one more thing… does it matter how thick the wire is thats used to wire up the pressure switch on the tank…? and if it goes to a toggle switch does it have to be fused?? if yes what amp…?
That wire only triggers a relay which draws less than an amp. 18ga is fine.
I would fuse any wire connected to a positive source just in case your wire ever gets pinched & shorted. 5-10 amps would be fine.
Technically, if you connect to an ignition wire, it’s already fused somewhere. So some would say don’t worry about it.
There’s now 2 compressor threads in the train horn section instead of the onboard air section, just sayin, not tryin to be a d!ck or anything but it makes it sorta hard for people to find what they’re looking for when everythings in the wrong sections.
i keep blowing the 80amp fuse at the battery? is this not big enough…?
the comps will run for a maximum of 30 seconds then blow the fuse…?
strange thing is its only blowing the 80 amp one at the battery and not the two 40 amp ones at the splitter box at the rear
if the comps are only 35 amps max each, why is it blowing an 80 amp fuse…?
I believe mine are 38amps each or so…I wanted to be extra safe so I did 30 and fuses at each comp and one 60 amp breaker at the battery. Haven’t had one problem. Most likely you have a short somewhere between your comps and battery if you’re blowing an 80amp fuse. Or you messed up somewhere in the wiring.
