P1000 Led lightbar install?

[Trailrider]

Was wondering if yall was putting relays on your light bars are just wiring them up through a blue sea fuse block. If just wiring them up what size wiring are you using?

 

[RedFred1]

wire size is based on current draw... how many amps will you be pulling? Look at the chart for that current and see the wire size needed...

Most switches are good for 10-20 amps... ish... if pulling more than your switch can handle, you will need a relay.

FredD

 

[JTW]

View attachment 115395

wire size is based on current draw... how many amps will you be pulling? Look at the chart for that current and see the wire size needed...

Most switches are good for 10-20 amps... ish... if pulling more than your switch can handle, you will need a relay.

FredD

Exactly... wattage of your light(s) divided by voltage (12) equals your amp draw. 15 amp is usually what I try to stay within when going thru a switch.

 

[Trailrider]

So if they are 18w led cubes no need for a relay just go thru switch and my ble sea fuse block?

 

[JTW]

So if they are 18w led cubes no need for a relay just go thru switch and my ble sea fuse block?

Yup

 

[TheHoover]

What about 4-45w LED cubes? 180w, probably 150-160ish realistically. It’s currently going straight to switch and fuse box with 15amp fuse. Relay needed? Size of relay? Thanks.

 

[Hondasxs]

What about 4-45w LED cubes? 180w, probably 150-160ish realistically. It’s currently going straight to switch and fuse box with 15amp fuse. Relay needed? Size of relay? Thanks.

180w= 15a.
If your not blowing that 15a fuse then your good without a relay. There most likley not pulling a full 180w anyways. 150-160w is good.

Sent from my SM-G955U using Tapatalk

 

[RedFred1]

What about 4-45w LED cubes? 180w, probably 150-160ish realistically. It’s currently going straight to switch and fuse box with 15amp fuse. Relay needed? Size of relay? Thanks.

Look at the chart... That chart is set up for 12volts DC circuits... next to the amps in the white amperage box lists watts at 12vdc.

1. Total up the watts of the cubes you need, or whatever the device you are trying to power, then look at the chart for the listed watts.

2. Note the wire size you need based on the length of the circuit you will run.

3. Once you get the watts and amps, you can look at the size of your switch to see it it can handle that current. If it is not rated for the current, you will need a relay or a different switch.

4. Relays are sized by taking the projected load and multiplying it by a safety factor. 125% of load is generally enough. So, for example, if your load is 20 amps, 20x1.25 = 25amps. Buy a relay that can handle 25, or more amps with a 12vdc coil and you will be good to go. Oversize your relay if the number comes out to a size not generally used, so, lets say you calculated you need a relay for 33 amps... go to 35 or 40 amp relay.

Use the chart and you will be able to quickly find out what you need. I printed a copy and stuck it in with my wiring stuff... I’m old and got CRS setting in... they told me when you get old, your mind is the second thing to go... I can’t remember the first...

FredD

 

[AZguy]

View attachment 115646

Look at the chart... That chart is set up for 12volts DC circuits... next to the amps in the white amperage box lists watts at 12vdc.

1. Total up the watts of the cubes you need, or whatever the device you are trying to power, then look at the chart for the listed watts.

2. Note the wire size you need based on the length of the circuit you will run.

3. Once you get the watts and amps, you can look at the size of your switch to see it it can handle that current. If it is not rated for the current, you will need a relay or a different switch.

4. Relays are sized by taking the projected load and multiplying it by a safety factor. 125% of load is generally enough. So, for example, if your load is 20 amps, 20x1.25 = 25amps. Buy a relay that can handle 25, or more amps with a 12vdc coil and you will be good to go. Oversize your relay if the number comes out to a size not generally used, so, lets say you calculated you need a relay for 33 amps... go to 35 or 40 amp relay.

Use the chart and you will be able to quickly find out what you need. I printed a copy and stuck it in with my wiring stuff... I’m old and got CRS setting in... they told me when you get old, your mind is the second thing to go... I can’t remember the first...

FredD

Your hair

 

[JTW]

Your hair

f***... mines starting to thin