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Golf Cart Wiring Gauge Question


NCMau's Avatar
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03-23-16, 10:13 AM   #1  
Golf Cart Wiring Gauge Question

I am in the process of restoring an older Melex 112. Since Iím fabricating all the cables, I need to know the gauge size. Iím assuming that 8 gauge wire would be sufficient to handle 36V/2HP motor, but I would like to have this confirmed before I buy the wire.

 
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03-23-16, 10:33 AM   #2  
I would use the old wiring as a guide to what size the new wire should be.

#8 sounds a little small to the motor.


~ Pete ~

 
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WA

03-23-16, 11:11 AM   #3  
I would use nothing less than #6 welding lead but I am rather conservative when it comes to low voltage DC motors.

 
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03-23-16, 04:52 PM   #4  
What amperage will your cart draw? That can be used as a guide for sizing your wire.

 
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03-24-16, 05:35 AM   #5  
I finally managed to halfway read the motor Amp draw:57A. If this reading is correct, #8 is definitely out of the question. Since I already have some on hand, I'm going to use #4 welding wire instead. The 2.1 HP motor is conservatively rated. At that amperage and voltage, it should be over 3 HP.

 
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03-24-16, 06:11 AM   #6  
Don't forget that the loops of wire used for the speed control are basically heaters. Energy gets wasted as heat to get the various speeds.

 
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