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Multiple Relay Wiring, Campervan Water Heater


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tomskimc 
Member - Posts: 1
Member spacespace
Joined: May 20, 2019
Location: Ireland
Posted: May 21, 2019 at 4:17 PM / IP Logged Link to Post Post Reply Quote tomskimc
Hi,
I'm in the middle of a campervan conversion project and am looking for some advice on how to wire relays.
I have a kitchen unit sink with hot/cold micro switch, a shower/wash basin tap with hot/cold micro switch, a toilet with flush/refill micro switch. I also have an external shower that is not micro switched. I will have a standalone switch for that. Hot water will be supplied from a water heater (propex malaga 5e) so I'm guessing hot water tap would trigger water pump, that feeds water heater and runs hot water to the hot taps.
Multiple Relay Wiring, Campervan Water Heater - Last Post -- posted image.
Can anyone advise how I should wire this setup? Relay switches wired in serial? Any help appreciated.
Thanks,
Tom
eguru 
Copper - Posts: 340
Copper spacespace
Joined: February 04, 2018
Location: Quebec, Canada
Posted: May 21, 2019 at 8:57 PM / IP Logged Link to Post Post Reply Quote eguru
My interpretation is that you are just needing to enable the pump when any of the switches connected to your water points-of-use are activated.
So you should only need one relay to drive the water pump. Wire all of the switches in parallel to the relay coil.

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