Upgrading Charging Wires?
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I think I'd have to understand what "draw of the truck" meant. My concern is that if that means what you normally draw, like maybe 35 amps, something would happen that would cause the alternator to need to throw it's max current, like maybe a dead battery. Would that over heat the shunt?
I'd rather size the shunt so full scale on the meter is full output on the alternator. Then you know you aren't going to burn anything up. And, you know roughly how much current you are throwing.
I'd rather size the shunt so full scale on the meter is full output on the alternator. Then you know you aren't going to burn anything up. And, you know roughly how much current you are throwing.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
Gary,
If you read that link it shows that it can take 100% (of 200A) for five minutes, 300% for 3 seconds.
The safety factor is there.
It's also a $60 widget, to allow you to keep functional an instrument that Bill points out is wired on the wrong side of the load (draw) anyhow.
If you read that link it shows that it can take 100% (of 200A) for five minutes, 300% for 3 seconds.
The safety factor is there.
It's also a $60 widget, to allow you to keep functional an instrument that Bill points out is wired on the wrong side of the load (draw) anyhow.
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