Hot greasecar switch

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

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Hot greasecar switch

Postby sacveggieguy » Fri Mar 21, 2008 2:31 am

Has anyone noticed on their greasecar system that the switch you use when switching from veg to diesel gets hot mine is any thoughts?

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Postby Burbarian » Fri Mar 21, 2008 7:26 am

If the switch is getting hot, then it has an internal resistance that is turning electricity into heat. The switch is either defective or channeling more current than what it was designed for. Switches shouldn't get hot. Of greater concern: is the wiring of adequate gauge or is that getting hot as well? This is a fire hazard. A switch getting hot likely means that circuit does not have an inline fuse or has one with too high a rating. You should wire the switch to activate a relay instead, then have the relay switch the load.
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Postby SunWizard » Fri Mar 21, 2008 8:11 am

I agree, it means you are running too much power through that switch. What do you have connected to it?
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hot switch

Postby sacveggieguy » Fri Mar 21, 2008 9:33 am

my greasecar switching and return valves and yes they are fused all done as per greasecar instructions and adequate sized wiring. The wiring near the valves do not seem to be getting hot. So maybe its the switch as i suspected.

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Postby Greenlogic » Fri Mar 21, 2008 6:58 pm

Mine gets hot too..It's from the light bulb in the switch. It doesn't burn my fingers, but is definately warm to the touch and maybe hot after a couple hour trip. The purge side light is even larger and will get warm too. Totally normal.
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Postby hheynow » Fri Mar 21, 2008 7:37 pm

Here are two links about wiring a relay. Just remember to have a fusible link between the battery + and the 30 tab.

LINK #1

LINK #2
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Postby David » Sat Mar 22, 2008 5:00 am

"Mine gets hot too..It's from the light bulb in the switch.

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hot switch

Postby sacveggieguy » Sat Mar 22, 2008 9:41 am

Thanks to all so its normal 4 the switch to get hot just checking.

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