tcslr Posted January 17, 2012 Share Posted January 17, 2012 Am installing an electric fuel pump on a 1932 Chevrolet. What fusing shuld be built into the circuit?Similarily, installing turn signals, what fusing for that?TIA, Tom Link to comment Share on other sites More sharing options...
rons49 Posted January 18, 2012 Share Posted January 18, 2012 Tom if you are still using 6 volt, the electric pump instructions should tell you what they recommend. The Delco 6v solenoid style( similar to Air tex) recommends a 10 amp in line: #14 wire is used. Directional signals, I would believe uses 16 wire, but my 50 Cadillac calls for a 10 amp fuse. Link to comment Share on other sites More sharing options...
tcslr Posted January 20, 2012 Author Share Posted January 20, 2012 Thanks. I bought the pump from a good supply parts store for old vehciles but there was nothing about the fusing. I called them and they said 25-30A. WOW.Thanks for the input.Tom Link to comment Share on other sites More sharing options...
A by the sea Posted January 26, 2012 Share Posted January 26, 2012 Fuses protect the thinnest gauge wire on the circuit from getting hot enough to cause a fire.Note that the fuse is not necessarily based on the current rating of the device at the end of the wire. So you are protecting the wire not the device. Keep in mind that the type of wire insulation and length of wire matters as you are trying to keep the wire from getting hot enough to start a fire. A little google searching will yield the chart of fuse or breaker to wire size. And Yes many guys are picking fuses by the wrong criteria for use in their cars. Link to comment Share on other sites More sharing options...
roadfossil Posted January 26, 2012 Share Posted January 26, 2012 I would disagree a little bit on the purpose of a fuse. Yes, it will keep a wire from burning up but mainly it will also keep the device a wire is connected to from burning up. The fuse should be sized to keep the device from burning up and the wire should be sized based on the fuse size. The wire should be sized to carry a greater current than the fuse. Link to comment Share on other sites More sharing options...
Guest Jim_Edwards Posted January 27, 2012 Share Posted January 27, 2012 Electric fuel pump wiring circuits should include a 25-30 amp relay as well as fuse proper for the current draw of the fuel pump.Yeah, a lot of us have hooked them up with nit-wit wiring schemes just to get passed a no fuel problem. The fact we did it does not make an incorrect job a good idea. Link to comment Share on other sites More sharing options...
Larry Schramm Posted January 29, 2012 Share Posted January 29, 2012 Just a note to be sure you get good fuses from a reputable company. Some of the low cost non name brand fuses might not blow at the stated current limit. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now