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Unread 05-20-2015, 05:43 PM   #1
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Default Voltage Reducer burning 36v negative

I'm on my second voltage reducer at this time. I've installed the 36v pos to the last battery pos in the series and the 36v neg to the first neg in the series. The unit powers on, all of my accessories work fine when it's parked in my garage. I put it in reverse and the negative wire burned up on the first unit.

I bought another unit, wired it up exactly the same, but I put an inline fuse on the negative side this time to prevent the same issue. Sure enough, as soon as I put it in reverse, it blew the fuse. Thankfully, it saved the reducer.

Any thoughts? I'm no electrical wiz by any means. Please help.

1989 Club Car DS 36 volt resistor cart
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Unread 05-20-2015, 06:04 PM   #2
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Default Re: Voltage Reducer burning 36v negative

can you post instructions that came with this unit?
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Unread 05-20-2015, 06:08 PM   #3
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Default Re: Voltage Reducer burning 36v negative

No instructions. It's the Amazon special. On the back of the unit it has 36v pos (red), 36v neg (black), 12v pos (yellow), and 12v neg (black).
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Unread 05-20-2015, 06:44 PM   #4
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Default Re: Voltage Reducer burning 36v negative

My guess is that some of your stuff is grounded to the frame that shouldn't be.
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Unread 05-20-2015, 07:18 PM   #5
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Default Re: Voltage Reducer burning 36v negative

Quote:
Originally Posted by JP358 View Post
I've installed the 36v pos to the last battery pos in the series and the 36v neg to the first neg in the series.
You should have 36v across the power to the converter, did you measure it?

It should be the first (+) post with the battery cable going out to the cart & the (-) should be the large battery cable going to the cart & all the negatives should be floating, non grounded to the frame.

Also I bet you may need to tie the two blacks together, if everything else is ok then try that, most converters do it that way as the (-) is common. Once you put power to the motor & conteroller your drawing load through the converter.
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Unread 05-20-2015, 07:24 PM   #6
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Default Re: Voltage Reducer burning 36v negative

Yep!! The reverse wire to the motor was grounding out on the frame. Good call.
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