Fuel pump power issues.....
Lead Driver
Joined: Sep 2006
Posts: 7,907
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If your blowing a 30 amp fuse then the circuit resistance is quite low.
R= E/I or 12.6/ 30 = .42 ohm.
8 ohms won't blow a 30 amp fuse. (I) current = 12.6/8 or 1.6 amps.
Max current draw shoud be at least 10 or more % below the fuse rating or about 25 amps or less. If you plug these estimates in to a calculation, the circuit reaistance should be no more than R=E/I or 12.6/ 25 = .5 ohm max.
Doesnt sound like a big difference between .42 and .5 but these are very specific and make a large change in circuit current.
The actual resistance difference you have is larger. i'm sure.
I do this just to show what you are looking for and some idea of the why's about it and how important everything is.
R= E/I or 12.6/ 30 = .42 ohm.
8 ohms won't blow a 30 amp fuse. (I) current = 12.6/8 or 1.6 amps.
Max current draw shoud be at least 10 or more % below the fuse rating or about 25 amps or less. If you plug these estimates in to a calculation, the circuit reaistance should be no more than R=E/I or 12.6/ 25 = .5 ohm max.
Doesnt sound like a big difference between .42 and .5 but these are very specific and make a large change in circuit current.
The actual resistance difference you have is larger. i'm sure.
I do this just to show what you are looking for and some idea of the why's about it and how important everything is.
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