Control panel Add a fuse question

Can you have 2 different size fuses in an add a fuse?
I have a 7.5A and a 10A.
Fuse I tapped into is the 7.5, 10 is in the kit for a control panel. thanks

 

Personally, I wouldn't. I always put an add a fuse into an oversized circuit, preferably one that is not a constantly used circuit. That way, the power draw from the added accessory is not constantly putting more strain on a power circuit than it was designed to handle.
If you need more power, I highly suggest looking into adding a Bussmann RTMR. That will give you 5 constant power circuits and 5 switched circuits with relays for heavier draw accessories.
Edit: it will also give you a cleaner install.

 

Depending on the 7.5A circuit you are using and the position of the add a fuse. Did you verify the pin that supplies the power vs the the pin that goes to the particular circuit? It does make a difference.

 

I did not. I’ll check on that. I’m assuming the side of the add a fuse that doesn’t have the cable needs to be on the up stream side so it’s not feeding through 2 fuses? And once that’s verified and placed correctly still okay to piggyback off that circuit? Was thinking of dropping the add a fuse to a 5 amp since the control panel can’t pull that much power.

 

I am currently tapped into EFI NO.2 multi port fuel injection system 7.5 amp.

was also considering switching to low beam headlamp 10amp since they will be on anyways. (The control panel is currently for all LED lighting, although in the future I might add an air compress or something related to off roading)

thanks!

 

That would be in the engine bay fuse/relay box. I see it's a 10A fuse. You have a 7.5A there?

 

Yes engine bay fuse box, 7.5A fuse, also listed as 7.5A on the inside of cover

 

That circuit turns on after the engine is off for the leak test...so what ever you tie to it will be on for a few minutes.

And the feeding fuse is 20A to that relay & circuit.

 

Good to know thanks, I suppose as long as it’s only briefly it should be okay. Might still switch to headlamps low beam fuse