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Old 10-11-2020, 03:49 AM   #1
Esteban_Escobar
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Default Question about amperage of voltage reducer

My quest to restore my '93 EZGO Marathon continues.....

I have decided to upgrade everything to 48V and add a few accessories - LED light bar, LED underbody lighting and a cell phone charger. So of course I am going to need a voltage reducer. So I started doing a little math (and I hate math) - between the headlights/tail lights/brake lights and the light bar I'm already looking at about a 25 amp draw. The underbody LEDs draw another 3 amps, putting the total at 28 when I drive in the dark.

Would a 30A voltage reducer handle that, or should I buy a bigger one? I read somewhere that the voltage reducer should be double what your anticipated load will be. Or should I install two - one for the light bar and a separate one for the everything else?
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Old 10-11-2020, 06:38 AM   #2
DB Cooper
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Default Re: Question about amperage of voltage reducer

30A would work in spirit, but I’m having a hard time believing modern lights would use that many amps. Are these LED light kits? I think my LEDGlow lights are like 2A.
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Old 10-11-2020, 07:42 AM   #3
Esteban_Escobar
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Default Re: Question about amperage of voltage reducer

Quote:
Originally Posted by DB Cooper View Post
30A would work in spirit, but I’m having a hard time believing modern lights would use that many amps. Are these LED light kits? I think my LEDGlow lights are like 2A.
The underbody lights draw about 3 amps, but I'm talking about the light bar that will go on the roof:

https://www.amazon.com/dp/B071XJ4HF8..._I0VGFbGCPBPJC

The description says "Maximum Wattage: 180W, Max Ampere: 15A; Operating Voltage: 12V DC Power"
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Old 10-11-2020, 11:57 AM   #4
JohnnieB
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Default Re: Question about amperage of voltage reducer

Quote:
Originally Posted by Esteban_Escobar View Post
The underbody lights draw about 3 amps, but I'm talking about the light bar that will go on the roof:

https://www.amazon.com/dp/B071XJ4HF8..._I0VGFbGCPBPJC

The description says "Maximum Wattage: 180W, Max Ampere: 15A; Operating Voltage: 12V DC Power"
Better re-read the specs.

Hint: The LED lightbar only draws 72W (6A @ 12V), the wiring harness is rated for 180W max.
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Old 10-11-2020, 02:59 PM   #5
Esteban_Escobar
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Default Re: Question about amperage of voltage reducer

I hate math.

So.....one 30A should be good?
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Old 10-11-2020, 03:27 PM   #6
JohnnieB
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Default Re: Question about amperage of voltage reducer

Quote:
Originally Posted by Esteban_Escobar View Post
I hate math.

So.....one 30A should be good?
Probably.
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