Hi all, hoping someone can guide me if what I am doing is safe and correct:
I want to add twin cooling fan (both 80w) to my radiator, but not connected through my ignition and have a toggle switch control both fans at the same time.
Wiring for each Relay as follow:
PIN 30 - Live feed from my Isolator Switch on the Battery using 10 gauge wire
PIN 86 - Live feed from the same point as above using 16 gauge wire
Pin 85 - Connected to a single toggle switch (from both relays)
Pin 87 - Connected to FAN ( Fan to be earth ) - 16 gauge wire
FUES Do I :
1 - Put a FUSE between the Battery and Relays - Using 40 amp fuse that will feed both Relays.
or
2 - Put 15 Amp between the Relay and Fan - Fuse for each fan.
or
BOTH
Many thanks in anticipation for your helpful advice and comments to the above.
Rick..
Just be aware that if you are using longer runs, then there will be a larger voltage drop across the wire run, which you really want to avoid.
Further details here:
https://www.12voltplanet.co.uk/cable-sizing-selection.html
Also would advise that you use the descent large spade connectors that go to the relays .
My preference would be to solder these as opposed to crimps, that's what I have done for my twin fan set up.
These fans are very current thirsty and will find out any poor connection !
Chris.
Many thanks KevinW and Chris, appreciate the replies, link and advise.
RickW
You can look at a Davies Craig Fan Switch / Digital Thermatic EWP - Cooling System
https://www.youtube.com/watch?v=vWHkv5AaC_0
A neat solution. I would go with a thermostat installed into the radiator.
Thanks JON1D great idea and simpler for me to do as well..
Quote from: JON1D on Jul 07, 2024, 11:17 PMYou can look at a Davies Craig Fan Switch / Digital Thermatic EWP - Cooling System
https://www.youtube.com/watch?v=vWHkv5AaC_0
A neat solution. I would go with a thermostat installed into the radiator.
I have one of these installed, although the external sensor is a bit of a PITA. I'd go with Jon's suggestion.
Thank you KevinW and like the whole idea and setup.
Some nice PWM controllers available now too for not much money.
Just make sure the sensor is in a sensible place. I've seen a lot of warped ali heads due to daft sensor placement.
Quote from: Waitey on Aug 08, 2024, 10:22 AMSome nice PWM controllers available now too for not much money.
Just make sure the sensor is in a sensible place. I've seen a lot of warped ali heads due to daft sensor placement.
Sensor switching on too late or ...?