Fuse Size for LED Light Bars

Hey, I tried searching but couldn't find the info I need. If I'm running two small 4" led bars that are rated at about 1.4 amps draw apiece, should I be running a 3 amp fuse? The lights are wired to come on together (back up lights). With two lights the draw is now about 2.8A I'm assuming. I've got two Heretic Studio 4" bars and the genetic writing harness came with a 15A fuse. Isn't that way too high?

It should be said that I don't have the exact specs on my lights but I looked up the rigid industries sr q as a comparison since it's similar in size. 4" bar with 4 bulbs.

I also have a rigid industries sr10 rated at 2.6A draw. So a 3A fuse should be just right?

Thanks for looking!

 

Just called heretic. They said the 4" pulls 2A each, so a 5A would be required.

 

As a generic question about fuses, how much higher should a fuse be rated than the device it controls. Is a 3A fuse enough for a device drawing 2.9A? Is there a general percentage above the draw?

 

Yea I've heard of that. That's like when you switch on an AC motor it draws a higher amperage for a fraction of a second or something like that...

 

Since it's so close to 3 Amps, I would use a 5 amp fuse. Everything has a tolerance. Might keep blowing fuses if you only use a 3 Amp one.