Water pump circuit wire gauge

[Jeff753]

Anyone know what the wire size is for a 2001 Dynasty Water Pump circuit? Looking to go from a 7 amp to a 10 amp controller and it prefers 12 gauge.
Also does this wire go directly to the battery?
If it does I can probably run a new wire for the pump power but not the switches.

[Bob_C]

Most fuses in this unit are 15 amp, and use 14 gauge wire

[rarebear.nm]

The existing wire most likely comes off the 12v fuse box. The hot should be going to the switch and from there to the pump. The pump's ground will go directly back to the 12v fuse box. The correct answer will depend on the length of this circuit as well as the amp rating. Not sure what you mean by the control panel?

You do not want to be adding circuits coming directly off the battery. This is a very bad practice to get into. If you do, it must fused properly near the battery. My pump uses 10ga wire, not sure the amps or fuse rating.

If you can not replace the entire length of wire from the fuse box - switch to pump and back to ground with the proper wire gauge. You could put a relay in the existing circuit where the pump is now and run a new larger wire to the relay and connect that to the pump and back to ground.

If the specs call for 12 ga, don't try to use 14 ga, there will be too much voltage drop and damage the pump motor.

[jacwjames]

Jeff

I've got the 10 amp controller 00-00145-100

My wiring diagram shows a 10 gauge wire to the battery with a 15 amp fuse.