start generator automatically


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Old 07-15-08, 08:05 PM
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start generator automatically

Does anyone know I could get a gas generator to start automatically if a water pump needs to start.

Basically, once the pressure water tank goes below 20psi, the pump need kicks in.
 
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Old 07-16-08, 12:04 AM
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Do you have the generator? Does it have electric start?

If so someone knowledgeable could make up a circuit that would work but there is no easy way to do it and it is beyond the scope of this forum I would suspect.

Would this just be in a power fail situation or is this in a non powered location?
 
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Old 07-16-08, 04:42 AM
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The generator has to have an auto-start feature, and you need a water pump pressure switch (samples) to provide relay contact closure to the generator. Actually I'd install two set at slightly different pressures so the genny kicks on before the pump.
 
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Old 07-16-08, 05:47 AM
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If the generator load only feed for water pump then yes the pressure switc will work as Rick describing but however there one warning I want to pass to you to make sure you are aware of starting current is very hard on generator unless you get at least 5 KW or larger so it will handle the surge load.

You will need a transfer swtich so it will change from normal power to generator power and also you will need to add a disconnect switch { so that way when you need to work on the waterpump for some reason so it will not start the generator unneeded, }

How big the water pump sizewise ??

Merci,Marc
 
 

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