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Old 12-14-2017, 10:43 AM
Vbug Vbug is offline
Join Date: Dec 2013
Location: Hoschton, GA
Posts: 41

Only odd spec is the mounting requirement, a 0.125"x16x16 aluminum plate for the full 200 amp rating. Surely the heat sink is needed only for continuous use at high amps?
The heat sink size is the same for all three from 100A through 200A so I would think there is some wiggle room. If I decided to go with an SSC I only have room to mount on a .125 sink slightly larger than the contactor. I'm thinking with typical buss amps there should not be heat issues.

Excellent points! I have revised my diagram to reflect your inputs.
Thank you

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Old 12-14-2017, 12:45 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is online now
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 3,266

I note that if your #1 battery master solenoid is open, you loose power to the alternator voltage regulator - but the alternator output is still connected to the #2 battery with no option to open this connection.

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Old 12-14-2017, 02:28 PM
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vlittle vlittle is offline
Join Date: Jan 2005
Location: Victoria, Canada
Posts: 2,370

Looking deeper, you have 3 ANLs doing the job of one. Depending on the physical layout of your wires, I think this can be reduced.

For example, the ANL shown next to the alternator implies that you are using it to limit the output of the alternator. The purpose of an ANL is to protect the wire from the battery if the alternator or wire short-circuits, hence it should be located closer to the battery end, like where you use one for the Diodes. This also means that you could double up the function and eliminate one ANL.

Same analysis applies for the third ANL, depending on wiring.

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Old 12-15-2017, 07:19 PM
Vbug Vbug is offline
Join Date: Dec 2013
Location: Hoschton, GA
Posts: 41
Default power-gate mofset

A possible solution to a Schottkey but pricey at $253! Vf drop so low it's not a factor, nice.
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