Wiring in a relay for a 12v pump ?
Submitted: Sunday, May 31, 2009 at 18:17
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blueriderwa
Hi I am haivng trouble working out how to do this.
12V battery on camper
12V water pump
Pull on push off isolation switch
Push on auto off button switch
4 Pole Relay
My idea is to use the pull on/ push off switch to simply isolate the + circuit close to the battery. thats easy
The other switch/button needs to be on a long lead so i can control the pump from a reasonable distance from the battery where the sink is.
I could run the battery + directly from the battery to the pump and use the isolation switch in this line to isolate the circuit.
Then run the Battery negative via the long lead and back to the pump.
Would this be ok? or should i use the relay? if so what is the best way to include the relay in the circuit.
Relay has 4 poles 30, 87, 85 and 86
Reply By: Member - Graham H (QLD) - Sunday, May 31, 2009 at 18:32
Sunday, May 31, 2009 at 18:32
Dont need a relay If you have an isolation switch all you need is a momentory on in the positive line.
I used to do this with a garbage disposer in the
kitchen sink.
We had a push switch down on the kickboard below the cupbords and you just held it in with your toe until you finished and then let it go.
Reason it was down there was so the kids couldnt climb up on a chair and turn a switch on near
the bench and put their hands down the garbage disposer.
We preferred to use scissors to cut their finger nails.
LOL
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Follow Up By: blueriderwa - Sunday, May 31, 2009 at 18:53
Sunday, May 31, 2009 at 18:53
Thanks Graham but what do you mean by a momentory?
I am planning on using the -tive as the long lead, is this the best idea or should i use the +tive?
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