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04-02-2015, 11:46 AM | #1 |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Voltage Reducer to Tow switch
So as some of you know I've been thinking about the wiring on my cart lately.
Right now, my reducer is connected to main battery connections with the yellow trigger wire to the key switch. I recently found out that the trigger wire only controls the 12v output and doesn't cut power to the +48v input. I am wondering if I can somehow wire the input side through the Tow switch, that way it isn't pulling on the pack all winter. The reducer is a 30 amp, does anyone know how many amps the Tow switch is rated for? |
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04-02-2015, 11:51 AM | #2 |
Voltaholic
Join Date: Dec 2013
Location: Close to Navasota Texas
Posts: 934
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Re: Voltage Reducer to Tow switch
I personally would not do what you are suggesting. If you insist on having them on the same switch use a double pole single throw switch in place of your current run tow switch to keep the controller and reducer separate. make sure its rated to run the full draw from the reducer.
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04-02-2015, 11:59 AM | #3 |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Re: Voltage Reducer to Tow switch
I was thinking I could replace the current switch with a bigger one.
I am just trying to keep the number of switches down... |
04-02-2015, 12:00 PM | #4 |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Re: Voltage Reducer to Tow switch
Ok like this?
http://m.acehardware.com//product/in...a=pla_17486182 Except I just noticed it's only 20 amps... |
04-02-2015, 12:04 PM | #5 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Voltage Reducer to Tow switch
If You are only concerned about long term unattended winter storage, just pull the fuse off the converter input side.
The current draw is very small, much less than the battery self discharge rate, so normally is not an issue. |
04-02-2015, 12:06 PM | #6 |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Re: Voltage Reducer to Tow switch
Wow that is low, I may just go the fuse route...
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04-02-2015, 12:30 PM | #7 |
Gone Wild
Join Date: Jan 2014
Location: Lafayette, Louisiana
Posts: 1,677
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Re: Voltage Reducer to Tow switch
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04-02-2015, 12:33 PM | #8 |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Re: Voltage Reducer to Tow switch
Yep
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04-02-2015, 05:02 PM | #9 | |
Gone Wild
Join Date: Aug 2009
Posts: 14,245
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Re: Voltage Reducer to Tow switch
Quote:
EDIT: I may have answered my own question. So for 30 amps at 12v, the max wattage would be 360W. 360W divided by 48v is 7.5 amps at 48v. Is this correct? I'm no electrical engineer and am learning... |
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04-02-2015, 07:38 PM | #10 | |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Voltage Reducer to Tow switch
Quote:
I would only add to assume the converter is no more than 90% efficient, 80% to be conservative if You ever push it to the max 30 amps. So I would fuse it for 450W. |
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