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Tie_1_On

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Posts: 119
Reply with quote  #1 
Anyone know what gage wire I need for batteries to my battery selector switch on my 2016 115 HO Etec?

I'll need 3 positives and one negative. Batts 1&2 about 6' long, Wire to "both" and jumpers between batts about 1.5 ' long. And one neg 6' long.

Thanks!

R.

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2016 Etec 115 HP HO  A115SHLAFH  S/N = 05475255
PhilH12

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Posts: 3,491
Reply with quote  #2 
Without searching for the charts on here, "the bigger the better".  You do have pretty short runs, so still as big as you can fit.  I'd say that #2 or #4 should be plenty.

I do hunt mice with an elephant gun though.  [wink]

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
ElderSparky

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Posts: 986
Reply with quote  #3 
BRP supplied battery cables are 4 gauge.  As you are adding around 12 feet of additional cable plus selector switch and connector drops, i'd recommend 2 gauge to minimize the drops.  Good insurance for down the road as the system ages.
boscoe

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Posts: 563
Reply with quote  #4 

Quote:
Originally Posted by ElderSparky
BRP supplied battery cables are 4 gauge.  As you are adding around 12 feet of additional cable plus selector switch and connector drops, i'd recommend 2 gauge to minimize the drops.  Good insurance for down the road as the system ages.


Good information. All too many want to save a buck or too only to find it will cost them more down the road. Either in aggravation or having to buy what they knew they should have bought in the first place. I am a victim myself of the latter.

Not sure if I should bring up the importance of properly crimping and soldering a battery cable, or if that will only seem contentious to some.

PhilH12

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Posts: 3,491
Reply with quote  #5 
++ to ElderSparky and Boscoe.  If I could, I'd also get some "heat shrink sleeves" with the interior 'glue' inside.  Make them as water-tight as you can.

Many battery cables are sold as 'pre-made', but if making them yourself, try all of the above - wire gauge, crimp, solder, heat shrink.  Not a place to scrimp, for sure.

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
jimh

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Posts: 6,383
Reply with quote  #6 
For advice on battery cable wire gauge, including Evinrude's recommendations specifically for E-TEC, see

http://continuouswave.com/forum/viewtopic.php?f=9&t=2153&p=12503

The total resistance of the battery cable conductors, that is, both the positive circuit and the negative circuit, should be held to be less than 0.005-Ohm, if Evinrude's recommendations are to be followed.

Adding cable to an existing battery cable can be difficult. The new segment has to be extremely low resistance in order not to raise the total resistance above the maximum allowed. It is really best to make the battery cables one-piece, no splices, and from a sufficiently large wire size to have plenty of margin. Any voltage drop in a cable means loss of power to the starter motor.

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EV-Diagnostic cables are back in stock.

Tie_1_On

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Posts: 119
Reply with quote  #7 
As always, thanks all. 
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2016 Etec 115 HP HO  A115SHLAFH  S/N = 05475255
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