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Hello,
I've never posted here before but, I'm trying to figure out the proper size for battery cables for my 2004 Yamaha 150 2-stroke and wanted to see if anyone here could help. I'm wanting to move the cranking battery from the rear compartment of the boat to the center console and add a second battery. I measured the starter current draw with a clamp ammeter and it reads anywhere from 157-220 amps, which when entered into a voltage drop calculator along with the 15-16' of cable I'll need it tells me I'll have to use 2/0 battery cable. Does that seem right? 2/0 seems really big and all the posts I've read on other forums are full of people saying to just use 2AWG which is smaller and less expensive. I guess the biggest question I have is, how much voltage drop is acceptable? The sites selling the wire that have the voltage drop calculators say it needs to be under 5%... Feeling confused...Thanks for any help.
I've never posted here before but, I'm trying to figure out the proper size for battery cables for my 2004 Yamaha 150 2-stroke and wanted to see if anyone here could help. I'm wanting to move the cranking battery from the rear compartment of the boat to the center console and add a second battery. I measured the starter current draw with a clamp ammeter and it reads anywhere from 157-220 amps, which when entered into a voltage drop calculator along with the 15-16' of cable I'll need it tells me I'll have to use 2/0 battery cable. Does that seem right? 2/0 seems really big and all the posts I've read on other forums are full of people saying to just use 2AWG which is smaller and less expensive. I guess the biggest question I have is, how much voltage drop is acceptable? The sites selling the wire that have the voltage drop calculators say it needs to be under 5%... Feeling confused...Thanks for any help.
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