Haltech Wire the fuel the haltech way, or my way?
#1
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Wire the fuel the haltech way, or my way?
Ok, before I got my haltech I rewired my fuel pump. Fat 8 guage wire, relay etc etc. Do you guys think I should use the Haltech leads to power the pump, or just switch the relay? It seems like all that 8ga wire would go to waste.
#2
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8ga wire is way overkill, but if you want to keep it keep it. it is simple to have the ECU turn on and off the pump instead of a seperate switch though. remember this is one of the Haltech options you paid for.
#4
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8AWG is fine.  You don't mention what fuel pump you're using.  Some of the bigger aftermarket fuel pump run some pretty good current!  Anything over 20A should be using larger wires over the wires the Haltech comes with...
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#6
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Walbro 255lph fuel pump runs under 20A, so the Haltech wiring should be adequate.  We've run these fuel pump with the supplied Haltech wiring with no problems.
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#9
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Use this as a guide,(from the National Electrical Code):
14AWG 15Amps max
12AWG 20Amps max
10AWG 30Amps max
8AWG 40Amps max
6AWG 55Amps max
14AWG 15Amps max
12AWG 20Amps max
10AWG 30Amps max
8AWG 40Amps max
6AWG 55Amps max
#11
I think what you're quoting from NEC is only applicable to AC wiring. Whether it's AC or DC and the voltage is crucial for determining what is the minimum wire size for a given amperage, along with whether the conductor will be free-standing or bundled with other conductors.
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