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Author Topic: Electric wiring help!  (Read 8048 times)

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #15 on: December 28, 2012, 03:56:33 PM »
Alright thanks. I have some 25's and 30's as well if the 20 won't run the light.

Thanks for the help everyone. If anything else has anything to add please feel free.
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #16 on: December 28, 2012, 04:38:13 PM »
Well if your running a 75 watt lamp it should draw some where around 6.25 amps.
So you could get by with a 10 amp fuse. I would run # 14 wire if I was doing it.

 :twocents:

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #17 on: December 28, 2012, 06:16:33 PM »
I think the wires are either 12 or 14g. Are the fuses rated in watts or amps?
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #18 on: December 28, 2012, 06:20:32 PM »
fuses are in amps. If the wire is 12 you are golden for size!  :IBCOOL:

Offline christopheri

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Re: Electric wiring help!
« Reply #19 on: December 28, 2012, 06:26:18 PM »
Well if your running a 75 watt lamp it should draw some where around 6.25 amps.
So you could get by with a 10 amp fuse. I would run # 14 wire if I was doing it.

 :twocents:

This is true. You divide 75 by 12 to get your amps... :yeah: #14 wire is plenty big enough to handle the load.

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #20 on: December 28, 2012, 06:36:20 PM »
Thanks guys! I always thought there were rated in watts for some reason. So the 20 should be more then enough. Should I maybe drop down to 15? or will 20 pop before I damage the wire or light?
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #21 on: December 28, 2012, 06:38:18 PM »
Thanks guys! I always thought there were rated in watts for some reason. So the 20 should be more then enough. Should I maybe drop down to 15? or will 20 pop before I damage the wire or light?

If it draws 6.25 amps a 10 amp fuse will put you  30% over.

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #22 on: December 28, 2012, 06:39:03 PM »
O.k I will get some lighter fuses then.
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #23 on: December 28, 2012, 06:39:46 PM »
Hey it's your truck!!!  :chuckle:

Bigger is not always Better! Despite what you have been told!

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #24 on: December 28, 2012, 06:42:12 PM »
 :chuckle: That's why I asking the experts :chuckle: Rather pop a couple extra fuses then toast my 200.00 lights :chuckle:
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #25 on: December 28, 2012, 06:45:12 PM »
Far from an Expert. Maybe I should retract my statement's.

What I know about electricity is if you get to close it Hurts!!!

I have referances on both statement's,
« Last Edit: December 28, 2012, 07:16:14 PM by Ridgeratt »

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #26 on: December 28, 2012, 06:48:15 PM »
It all sounds right by what others are saying as well. So I think you are onto something for sure. Lighter is always better with fuses. I learned that a long time ago. I know my trucks all have 20 amp fuses rigged for the factory dc plug in's. So I guess that was my thinking behind the 20 amps.
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Offline Ridgeratt

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Re: Electric wiring help!
« Reply #27 on: December 28, 2012, 06:51:53 PM »
Just don't forget your safety glasses and welding hood when ya use it the first time.  :chuckle:

Offline carpsniperg2

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Re: Electric wiring help!
« Reply #28 on: December 28, 2012, 07:00:39 PM »
 :chuckle: :tup:
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Offline Fishmasterdan

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Re: Electric wiring help!
« Reply #29 on: January 05, 2013, 05:42:03 AM »
Just a small note to remember. A resistive load will increase in amps as wire length increases.
Example;
A spot light is a resistive load (unless its LED). If you run 30' of wire your voltage drop will be 6% at 7amps and increasing your amps equally by 6%. Your light will be dim if you use light gauge wire.
This is very important to remember if using 12 volts and run 30' of wire or more.

Basically what I am trying to say is use #12 or larger wire if you are running to your battery. And its the length of both positive and negative. Current in DC flows from neg to positive.

 


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