09-20-2020, 02:02 PM | #1 |
Gone Wild
Join Date: Jun 2018
Location: Kersey Pennsylvania
Posts: 437
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Breaker
I don’t run my golf cart very much so I was thinking of adding this breaker on the negative side so instead of unhooking the negative wire I could just break it here with this be OK to do
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09-20-2020, 02:07 PM | #2 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 12,997
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Re: Breaker
Would it work, yes. But bad idea having something that can create sparks near hydrogen..
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09-20-2020, 02:46 PM | #3 | |
Gone Wild
Join Date: Apr 2020
Location: 1000 Oaks, SOCAL
Posts: 424
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Re: Breaker
Quote:
There normally should be no spark at all, unless there is a grounded to the frame connection somewhere, which shouldn't be. If it was mounted on a frame rail at least it would be farther away from the battery vents. A switch with enclosed contacts would be better, like this one - |
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09-20-2020, 02:58 PM | #4 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 12,997
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Re: Breaker
Some carts spark when connecting because it is charging the capacitors in the controller.
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09-20-2020, 06:57 PM | #5 |
Gone Wild
Join Date: Sep 2016
Location: Titusville, FL...Space Coast
Posts: 591
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Re: Breaker
Also if you have a voltage reducer, it will give a healthy spark for the same reason...
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09-21-2020, 10:27 AM | #6 | |
Gone Wild
Join Date: Apr 2020
Location: 1000 Oaks, SOCAL
Posts: 424
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Re: Breaker
Quote:
But, with an aftermarket 48v to 12v reducer I never get a spark when connecting the battery cables. The 48v to 12v reducer doesn't get powered until the Key switch is on. Mine is a newer system so probably doesn't charge up a capacitor. But, with a system that is charging a capacitor, how is the spark different when connecting a battery terminal cable vs a remote switch? I wouldn't use the open blade switch, an enclosed remote switch would be better than sparking at the battery terminal. |
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09-21-2020, 10:54 AM | #7 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Breaker
Unless you have a high end converter like the DPI "no spark model", every DC-DC converter I have ever seen does spark when first connected due to the unregulated charging of its filter capacitors.
Also, the description of the trigger wire is not accurate for typical converters, the converter is Always powered, the trigger wire only controls when the 12v output is available. DC switches need to be "fast acting" in order to reduce arcing since there is no 0v crossing to stop an arc like in AC operation. |
09-21-2020, 06:48 PM | #8 |
Gone Wild
Join Date: Sep 2016
Location: Titusville, FL...Space Coast
Posts: 591
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Re: Breaker
That's why I use your light bulb trick Sergio...
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09-22-2020, 04:52 PM | #9 | |
Gone Wild
Join Date: Apr 2020
Location: 1000 Oaks, SOCAL
Posts: 424
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Re: Breaker
Quote:
So, I guess mine is sparking inside the activation relay casing, but I don't know. |
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09-22-2020, 06:41 PM | #10 |
Gone Wild
Join Date: Apr 2017
Location: SE TN
Posts: 2,217
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Re: Breaker
Hydrogen doesn't linger around and accumulate. Once it escapes from the battery it's gone. A lot of contactors have exposed contacts.
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