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05-30-2018, 10:10 AM | #11 | |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,625
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Re: 1 Main Rocker覧4 Sub-Rockers....How many Fuses?
Quote:
When selecting wire size, it is always better to err on the size of bigger is better. Within reason of course... you CAN run 1/0 AWG for a 5A LED lightbar and it won't hurt anything... it will just make running the wires more difficult and in the case of running a pair of 1/0 to a lightbar on the roof, be ugly. |
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05-30-2018, 10:26 AM | #12 | |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,625
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Re: 1 Main Rocker覧4 Sub-Rockers....How many Fuses?
Quote:
Best bet would be to wire everything up as it would be in the cart (if it's not already in the cart). Record current draw load that will be presented to each individual sub rocker. Add 20% for headroom. This may not be immediately necessary, but as time goes on, corrosion in connections, grounds, etc. can add up resistance and affect current draw in some devices (depending on how the ballasts are regulated... tighter regulated devices will see lower voltage (Due to bad ground, weak battery, etc) and compensate by increasing current draw so the lights/radio/whatever work correctly). unregulated parts will just get dimmer as source voltage decreases, it all just depends on how that part was designed. Once you have each individual rocker, you'll know what to fuse it at. And once you know what you want to fuse it at, you can take that load and the length of the wire run (from the rocker to the light in this case) and calculate the appropriate size wire to run. There are plenty of tables you can find on google to select wire size based on current load and run length. |
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05-30-2018, 10:37 AM | #13 | |
Gone Wild
Join Date: Jun 2013
Posts: 427
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Re: 1 Main Rocker覧4 Sub-Rockers....How many Fuses?
Quote:
:-) |
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05-30-2018, 10:49 AM | #14 |
Getting Wild
Join Date: Jun 2017
Location: New Strawn, KS
Posts: 120
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Re: 1 Main Rocker覧4 Sub-Rockers....How many Fuses?
Use my link to powerstream and look at the column for max amps for chassis wiring. This is what you are doing (open air wiring). Based off the limited information, I would run 20 AWG for the subs as that gives you 11A (10A fuse) for plenty of expansion room. 16 AWG is 22A (20A fuse) and plenty for 4 circuits of lighting.
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