Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Iowawhitetail2016, CrystalLu, nissan720, Victoria361waterfowler, Teddybearrat
63089 Registered Users
Top Posters
dogcatcher 84396
stxranchman 52093
RWH24 44568
rifleman 44320
BOBO the Clown 43045
bill oxner 42791
BMD 40628
Big Orn 37484
txshntr 35005
SnakeWrangler 31713
facebook
Forum Stats
63089 Members
46 Forums
443647 Topics
6111982 Posts

Max Online: 16728 @ 03/25/12 08:51 AM
Topic Options
#6141049 - 01/18/16 09:00 AM Wire size for light bar and navigation lights
BULSPRG Offline
Bird Dog

Registered: 10/01/11
Posts: 380
Loc: McKinney, Tx
I'm installing a 44" light bar and navigation lights on my duck boat, the light bar is 240w. What wire size would y'all recommend? I'll have the bar on one switch and the navigation lights on another, both being supplied by a DC battery.Thanks.
_________________________
Let em Work

Top
#6141060 - 01/18/16 09:07 AM Re: Wire size for light bar and navigation lights [Re: BULSPRG]
Cast Offline
THF Celebrity

Registered: 12/14/08
Posts: 16734
Loc: North Texas - God's Country
240 (watts) divided by 12 (volts) equals 20 (amps).

that will use a 12 gauge wire, 10 gauge would be better at that load, as 20 amps is maxed out for 12 gauge wire.
_________________________
Cast



I have a short attention spa

Top
#6141070 - 01/18/16 09:13 AM Re: Wire size for light bar and navigation lights [Re: BULSPRG]
TTUhunter4 Offline
Tracker

Registered: 07/03/10
Posts: 704
Loc: Texas
You will definitely want to use at least 10 gauge, assuming you are running the wire from the back of the boat to the front. Cast simplified things and didn't take resistance into account.
_________________________
"God made man, but Samuel Colt made them equal."

Top
#6146638 - 01/21/16 11:37 AM Re: Wire size for light bar and navigation lights [Re: BULSPRG]
Tipps Offline
Woodsman

Registered: 11/12/13
Posts: 143
I always used extension cords for my light wiring on my bowfishing boat, for way more watts than what you are going to do. i've used cheap jumper cables as well, for extending trolling motor wires, which also work great. just a few options if you might have either laying around the house.


Edited by Tipps (01/21/16 11:37 AM)

Top
#6146845 - 01/21/16 01:01 PM Re: Wire size for light bar and navigation lights [Re: Tipps]
TTUhunter4 Offline
Tracker

Registered: 07/03/10
Posts: 704
Loc: Texas
Originally Posted By: Tipps
I always used extension cords for my light wiring on my bowfishing boat, for way more watts than what you are going to do. i've used cheap jumper cables as well, for extending trolling motor wires, which also work great. just a few options if you might have either laying around the house.


Don't do this lol
_________________________
"God made man, but Samuel Colt made them equal."

Top
#6146904 - 01/21/16 01:34 PM Re: Wire size for light bar and navigation lights [Re: BULSPRG]
Cast Offline
THF Celebrity

Registered: 12/14/08
Posts: 16734
Loc: North Texas - God's Country
You could use a 12 or 10 gauge extension cord if you like, not a bad way to go but overkill for sure. As far as wire size and resistance is concerned, you're not running enough length to be concerned with the wire's native resistance. That said, run 10 gauge and put it in convoluted loom to protect it.
_________________________
Cast



I have a short attention spa

Top



© 2004-2016 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide