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  #1  
Old 05-16-2013, 11:18 AM
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What guage wire?

When hooking batteries to a perko switch's 1 and 2 posts, and connecting each banks ground circuit, what guage wire should one be using? I'd assume 0 AWG? What's the best method for "crimping" the wire end connections to 0 AWG wires and making sure they stay in place? A BFH?
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  #2  
Old 05-16-2013, 11:39 AM
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Here is a start.
http://mastercraft.com/teamtalk/show...ght=wire+gauge
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Old 05-16-2013, 11:49 AM
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I use a propane torch and a handheld hydro crimper

http://www.youtube.com/watch?v=zssIlnwH8dY

http://www.youtube.com/watch?v=y5vkwWuDRGE
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Old 05-16-2013, 12:22 PM
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Originally Posted by thatsmrmastercraft View Post
Damn... 3 threads down too. I'm slackin' over here. From that chart it looks like 4 guage will be fine. Sound right? The switch won't be more than 4 feet from the batteries.
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Old 05-16-2013, 12:25 PM
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Quote:
Originally Posted by mzimme View Post
Damn... 3 threads down too. I'm slackin' over here. From that chart it looks like 4 guage will be fine. Sound right? The switch won't be more than 4 feet from the batteries.
CantRepeat is the guy with the answers there.
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Old 05-16-2013, 01:31 PM
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I would go with 1 or 2/0 on a battery cable. Think about how many amps a stalled cold stater could draw and how long someone might hold the key on.

edit

I'd guess near 400 amps with a 650 cca battery. It might drop once the motor starts to turn over but why risk it. There might even be a coast guard reg on the gauge that needs to be ran.
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Old 05-16-2013, 01:37 PM
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You will never say "I wish I had used a little smaller gauge wire on that"
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  #8  
Old 05-16-2013, 04:27 PM
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Quote:
Originally Posted by CantRepeat View Post
I would go with 1 or 2/0 on a battery cable. Think about how many amps a stalled cold stater could draw and how long someone might hold the key on.

edit

I'd guess near 400 amps with a 650 cca battery. It might drop once the motor starts to turn over but why risk it. There might even be a coast guard reg on the gauge that needs to be ran.
Good call... I'll go with the 0 Guage. No reason not to, really. Thanks for the help!
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  #9  
Old 05-18-2013, 11:15 AM
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I think I still need help... since I don't have access to a torch or hydro crimper, what is the best method for removing the giant battery terminal connection on the wire that goes to the starter, and replacing it with an eye style attachment that will attach to the perko switch?
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  #10  
Old 05-18-2013, 01:54 PM
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Quote:
Originally Posted by mzimme View Post
I think I still need help... since I don't have access to a torch or hydro crimper, what is the best method for removing the giant battery terminal connection on the wire that goes to the starter, and replacing it with an eye style attachment that will attach to the perko switch?
http://www.homedepot.com/p/Bernzomat...3#.UZeyNFBNWf0

Less then $15 at home depot.

Just cut the end off it and strip back the wire a bit.
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