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Unread 08-22-2016, 12:18 PM   #11
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

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Originally Posted by barber613 View Post
10 gauge is a bit much. The 48 volt side, or line side , will be the lower current side of reducer. If the reducer is 10 amp output max, the 48 volt side will be less the 4 amps. Unless i am missing something, 10 is way to big.
He's my reasoning.... Generally everything sold is engineered. If they give me a 10g lead and instruct to connect to battery pack I use the same size wire as the lead they gave, just to be safe. It's not like it costs a lot more and unless you are intimately familiar with the product and it's specs it's risky to advise he does otherwise.
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Unread 08-23-2016, 11:17 PM   #12
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What size fuse do you guys use, and what is the reducer you keep buying?

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Unread 08-24-2016, 08:34 AM   #13
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

that is the reducer i use, its no doubt a chinese thing, around 50-70 bucks. I don't have issues with it, but because it works, I tend to just stick with it. and this one happens to have a fuse, but when I don't have a fuse I add a 10amp fuse in line


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Unread 08-24-2016, 08:37 AM   #14
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

I have used this one too, but its really just preference, whatever you like
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Unread 08-24-2016, 10:42 AM   #15
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Smile Re: What gauge wire to use when wiring a 48V to 12V reducer?

Part of the answer to what unit to buy depends a lot on useage...do you run a lot of load on your reducer all the time? Or like most of us...just the occasional lights and maybe the power socket for charging your cell phone...and of course the radio or some type of stereo system all determines if you can get by with a Chinese made unit or something better.
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Unread 08-24-2016, 08:40 PM   #16
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

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Part of the answer to what unit to buy depends a lot on useage...do you run a lot of load on your reducer all the time? Or like most of us...just the occasional lights and maybe the power socket for charging your cell phone...and of course the radio or some type of stereo system all determines if you can get by with a Chinese made unit or something better.
completely agree, where I work I am used to setting up security company's carts with head and tail lights, and the amber security light on top


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Unread 08-24-2016, 08:45 PM   #17
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What else is used in conjunction with the reducer? Do you use a bus bar (I have no idea what that is), a fuse box, or what?

I've got standard lights, gonna have LEDs underneath, possible radio in the future. Any photos of what your wiring looks like would really help.

Sorry to hijack this post, btw.

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Unread 08-24-2016, 08:49 PM   #18
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

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Originally Posted by seanmcg View Post
What else is used in conjunction with the reducer? Do you use a bus bar (I have no idea what that is), a fuse box, or what?

I've got standard lights, gonna have LEDs underneath, possible radio in the future. Any photos of what your wiring looks like would really help.

Sorry to hijack this post, btw.

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bus bar connects different things together, like on the old club car DS with 5 solenoids, the have a bus bar going across them. yes, some people set up a fuse box, especially when more is involved like you mentioned radio, other lights than head/tail lights. the wiring part is going to be varied lol so its not that easy to explain, you also have to decide which type of reducer you want as there are many out there


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Unread 08-24-2016, 08:53 PM   #19
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Default Re: What gauge wire to use when wiring a 48V to 12V reducer?

I understand your confusion, as it is confusing when you first learn to set up a voltage reducer. But if your understanding of what input and output wires are, the key switch wire(if your reducer has it) you will start to see where things go to. Just be very careful because voltage reducers are not forgiving and if you mix up input/output wires it will destroy the unit probably
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Unread 08-25-2016, 12:11 PM   #20
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Default What gauge wire to use when wiring a 48V to 12V reducer?

At a minimum your reducer will have 48/36 v input (battery pack +) , common negative (battery pack -) and 12v xx amp output (accessories). You can use the same ground /- wire for accessories and the pack.

A few better ones will also have key switch (connects to positive output of the key) and a constant output even if key is off (for radio memory / clock etc).

From there it's how busy / easy you want to get. If you have a lot of stuff you can have a small fuse box (distributes power) and buss bar (collects power after accessories and runs back to battery negative).

Look at my post "project unnecessary " under members rides and you will see a wiring diagram and pics etc



White power in , green / black power out

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