For those of you..

[Tripleblack51]

with Vintage AC in your cars, do have an auxiliary fan?
If so, what amp fuse are you using?

Mine was using a 20amp which was burning out. This caused the AC to
not work.
Upgraded to a 25 amp fuse and drove it about 15miles in hot Florida weather.
It's working fine and the fuse held.

Any of you have similar issues?

Thanks,

Pedro

 

[IH2LOSE]

Pedro Its REAL BAD to install a larger fuse
A fuse is rated at a certain amp rating to protect the wires.Regaurdless of the load of the fans,Wire size dictates fuse size. Too high a fuse rating and the wires can burn up prior to the fuse poping and mellting and catching fire.

Find out what size wires are run to your fan or fans.that will tell you at least what the maximum fuse size should be to protect your wires.Then find out the what the amp draw is on the fan or fans and that will tell you what the recomended fuse size should be to protect the fans.

Lastly any time I am using a high load electric product (as in fans,driving lights) I run them off of a relay.

Pull that fuse untill you know what size wire you have

 

[IH2LOSE]

8 awg = 100 amps
10 awg = 60 amps
12 awg = 40 amps
14 awg = 25 amps
16 awg = 15 amps
*[font=Times New Roman, Times, serif]This is a general guide. Always go with the
equipment manufacturer's recommendation.
[/font]

 

[TODD L GRIFFITH]

IH2LOSE, Those numbers look good enough to come right out of the NEC. I agree with those numbers ! Hvac guys don't blow at all!

 

[Tripleblack51]

Pedro Its REAL BAD to install a larger fuse
A fuse is rated at a certain amp rating to protect the wires.Regaurdless of the load of the fans,Wire size dictates fuse size. Too high a fuse rating and the wires can burn up prior to the fuse poping and mellting and catching fire.

Find out what size wires are run to your fan or fans.that will tell you at least what the maximum fuse size should be to protect your wires.Then find out the what the amp draw is on the fan or fans and that will tell you what the recomended fuse size should be to protect the fans.

Lastly any time I am using a high load electric product (as in fans,driving lights) I run them off of a relay.

Pull that fuse untill you know what size wire you have

Thanks,

I didn't change it..my mechanic did.

I will ask him a few questions tomorrow.

Thanks...I appreciate the feedback.

Pedro

 

[IH2LOSE]

I really have to better explain my reply.

what ever current the fans draw,that should dictate the size wire you use.You size fuses to protect the weekest link in the circut.

Your fans could draw less the 15 amps and need to be protected by a 15 amp fuse.But you could have 14awg wire (rated at 25 amps) and think you could put in a larger fuse and be safe.You cant because the weekest link is the fans in this example needing to be protected by the 15 amp fuse.

 

[Tripleblack51]

Thanks for your help.



This place is the best!!

Pedro

I really have to better explain my reply.

what ever current the fans draw,that should dictate the size wire you use.You size fuses to protect the weekest link in the circut.

Your fans could draw less the 15 amps and need to be protected by a 15 amp fuse.But you could have 14awg wire (rated at 25 amps) and think you could put in a larger fuse and be safe.You cant because the weekest link is the fans in this example needing to be protected by the 15 amp fuse.