john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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what gauge of wire do i need to run the positive from the boot to a cut off witch and then to the engine?
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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Check this page out, some good advice in there.
http://www.bcae1.com/wire.htm
*edited again since i found this site with better advice* 
[Edited on 05-02-2009 by C2RL R]
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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make sure you put an inline fuse in close to the battery.
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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cant put a fuse in line as the starter motor draw will pop it!
ill be using a dash mounted kill switch or maybe hide it somewhere for security.
just need to know the gauge of wire to use,
went in maplins and saw some 4 guage amplifier wiring but was 4 quid per half meter!!!
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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you can get different rated fuses. there are specific motor rated fuses that allow 5 time normal current draw for a short time.
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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theres no need fo a in line fuse.
there wasn't one originally so no need,
just needed to know what gauge wire people use
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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I'd use the thickest shit available to man TBH
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scottyp1989
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Registered: 29th Jul 07
Location: Warley, West Midlands
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either 4 or 0awg would be suficient enough
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GavCorsa
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Registered: 13th Feb 06
Location: Grantham, Lincs Drives: bmw 323i coupe
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i'l be using 0awg for mine
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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there is plenty of need for a fuse. you will be passing a cable connected to the battery through a grommet that could perrish. this could cause a short. you put inline fuses in when running a cable to the boot from the batt so its the exact same thing here.
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Ste L
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Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
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quote:
Originally posted by C2RL R
there is plenty of need for a fuse. you will be passing a cable connected to the battery through a grommet that could perrish. this could cause a short. you put inline fuses in when running a cable to the boot from the batt so its the exact same thing here.
uuumm.... on a nova, or opel corsa b, the battery wire passes through a grommet in the firewall, and thats not fused
so whats the difference?
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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if it shorts and he has no fuse his hole car could go up in flames.
read the article i linked to above.
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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So what size fuse would you use?
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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depends really. i would hook up the cable temporarily with no fuse and measure the current draw to see what size would be needed. it will have to be a motor rated fuse so that it can take 5 times its rated load whilst the starter cranks the engine.
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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quote:
Originally posted by GavCorsa
i'l be using 0awg for mine
where do you get the cable from?
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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well the grommet that its going through is in very good condition at the moment, and i can see it as i have no heater matrix or glovebox so i could see if its perishes so no need for a fuse lol
and the wire will be very secure unlike an amp cable
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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i have 0 gauge on mine. no inline fuse. car hasnt set on fire that i know of in the last 3 years anyway.
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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how much was the wire and where u get it from?
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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few quid a metre.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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christ why are people using fuses and massive wiring, if the battery is in the boot, you are simply moving it, it won't draw any more current so no need for mega thick wires or fuses.
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donvaux
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Registered: 6th Oct 05
Location: Pontypool, Torfaen
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quote:
Originally posted by sand-eel
christ why are people using fuses and massive wiring, if the battery is in the boot, you are simply moving it, it won't draw any more current so no need for mega thick wires or fuses.
totally wrong mate, the longer cable means there is a higher resistance for the current to flow therefore a larger cable is required. also there is a posibility of voltage drop which also means a bigger cable is required
[Edited on 07-02-2009 by donvaux]
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aaronc190
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Registered: 19th Aug 08
Location: ireland
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i was told to use wire from a welder if i was gona do that?
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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quote:
Originally posted by aaronc190
i was told to use wire from a welder if i was gona do that?
welding wire of 0.6mm?
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C2RL R
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Registered: 28th Mar 02
Location: Redcliffe, QLD
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he means the earth cable.
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john_c20xe
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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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cant seem to find anyone that know what wire to use so im just gonna go scrappy a raid a bmw for its cable
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