Wire gauge?

I believe it's for 75 feet or less. Also it's for temp of wire and type of insulation.
As you said yours is based on using wire spec'd for aviation.
GM, Ford, Honda, Yamaha and all the other manufactures don't like to waste money. There has to be a reason they "overbuild electrical systems".
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And as I also said, it's been working fine for 6-8yrs with 10ga.
Proof's in the puddin'... as they say.
 
Another factor not taken into account on the NEC chart is duty cycle. For instance, continuous duty through a conduit... at 50A would take a 6ga wire.
Since Yamaha spec'd a 6ga wire, it looks like they didn't take into account the nature of the duty cycle?


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Since Yamaha spec'd a 6ga wire, it looks like they didn't take into account the nature of the duty cycle?
That's funny. You think all the engineers at Yamaha and the other companies overlooked something like that for over 50 years?
I doubt it. I'm sure there is a good reason for what they do.
 
That's funny. You think all the engineers at Yamaha and the other companies overlooked something like that for over 50 years?
I doubt it. I'm sure there is a good reason for what they do.
Apparently you missed the question mark at the end of that statement?
I never said nor claimed that was the case, Greg. I asked a question, that's all.
Speaking of that's all.... that's all, I'm out.
 
I just use welding cable - 16sq.mm is fine for bikes, 25 to 35sq.mm for most cars. Super flexible, (used to be) cheap, and simple to terminate. For all that I'm likely to use on bikes (or cars), it's far cheaper buying it by the welding cable length and making it up to suit. Pre-cut battery and earth (ground) cables from auto supplies places are overpriced and likely to be made of some weird shit like copper-coated aluminium.
 
I just use welding cable - 16sq.mm is fine for bikes, 25 to 35sq.mm for most cars. Super flexible, (used to be) cheap, and simple to terminate. For all that I'm likely to use on bikes (or cars), it's far cheaper buying it by the welding cable length and making it up to suit. Pre-cut battery and earth (ground) cables from auto supplies places are overpriced and likely to be made of some weird shit like copper-coated aluminium.
I looked to use welding cable too. Our Princess Auto (Cdn HF) sells it for $2.99/ft. Pretty inexpensive. I plan to go there this Sunday and buy a couple of feet for “inventory”. I have some nice crimp on terminals from Aircraft Spruce. The seams are welded so they don’t split when you squeeze them hard.

X2 to beware of copper coated aluminum. There’s lots of this junk on Amazon, Temu…. If the the price looks too good to be true it’s most likely not copper. The sneaky vendors use weasel language to lead you to believe it’s copper but if you read further in the descriptions you usually will find it’s this crappy wire. Dunno how they’d make that $hit.
 
One way to for adequate wire gauge is to use a voltmeter to measure voltage drop. with the meter set to "volts" connect the leads to either end of the cable, then watch the meter while you crank the starter. A reading of one volt or less, while cranking, should be acceptable.
 
I looked to use welding cable too. Our Princess Auto (Cdn HF) sells it for $2.99/ft. Pretty inexpensive. I plan to go there this Sunday and buy a couple of feet for “inventory”. I have some nice crimp on terminals from Aircraft Spruce. The seams are welded so they don’t split when you squeeze them hard.

X2 to beware of copper coated aluminum. There’s lots of this junk on Amazon, Temu…. If the the price looks too good to be true it’s most likely not copper. The sneaky vendors use weasel language to lead you to believe it’s copper but if you read further in the descriptions you usually will find it’s this crappy wire. Dunno how they’d make that $hit.
In a country where even fake eggs are available, nothing surprises me any more.
 
Just picked up a couple of feet of #6 welding cable for inventory. The wire fits very snugly in an 8 gauge crimped on terminal. Most of the terminals I now buy have a welded seam so they don’t split open with a heavy crimp. The welding cable is nice with good, heavy rubber insulation and a fine, multi strand copper conductor.
 
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