Fuse size on Cobra CB

Fergie

NAXJA Forum User

Location

Flagstaff, AZ

• Feb 13, 2005

• #1

Picked up a Cobra 75WXST(or wahtever the letters are) and it did not have the inline fuse wired in.

I wired in a fuse holder, but need to know the size.

Thanks

Fergie

 

XJ_ranger

NAXJA Member

NAXJA Member

Location

Port Orchard, WA

• Feb 13, 2005

• #2

i use a 7.5 in my Stalker or whatever my CB brand is - dont know if that helps...

this is what it looks like...

 

W

wrong1

NAXJA Forum User

Location

Minnesota

• Feb 13, 2005

• #3

P=V*I
I=P/V

and if I remember right the max power of a stock CB is 5 watts so

5W/12V=0.416A

so something in the 0.5A ballpark should work fine.

 

C

catyrpelius

NAXJA Member #1023

Location

New Jersey

• Feb 13, 2005

• #4

The cobra classic in my truck uses a 2 amp inline fuse and that is what came prewired into it, hope this helps some

 

pabloconrad

NAXJA Forum User

Location

In the NW hunting Sasquatch

• Feb 13, 2005

• #5

I have the same CB. It uses a 2A inline fuse. Don't go anyhigher than that. If your CB devolps a short, it'll burn before blowing the fuse.

 

old_man

NAXJA Forum User

Location

Loveland, Colorado

• Feb 13, 2005

• #6

While your Ohm's law is correct, no electronic circuit it 100% efficient. A 2-3 amp fuse should work fine. I would keep it towards the 3 amp range. If your antenna isn't matched perfectly or accidentally gets shorted to ground, you could pop a fuse real quick.

 

Fergie

NAXJA Forum User

Location

Flagstaff, AZ

• Feb 13, 2005

• #7

Thanks for the info guys.

I'd assume a 5A is too large, so I am goning witht the 3A like OM suggested.

Thanks again.

Fergie