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[Tim Kerr]

Ok Guys, another query.

i am going to fit a fan (computer fan) on top of my ecu to cool it during our current "heat wave"! Dont have a clue about amp however.

The fan is 12v so was going to wire it up to the batttery but it says on the fan it is 0.45amps. What do i need to get to reduce the amps on the battery?

Tim

[CBR ocket (tonyslee)]

May 22, 2012 18:43:30 GMT Tim Kerr said:

Ok Guys, another query.

i am going to fit a fan (computer fan) on top of my ecu to cool it during our current "heat wave"! Dont have a clue about amp however.

The fan is 12v so was going to wire it up to the batttery but it says on the fan it is 0.45amps. What do i need to get to reduce the amps on the battery?

Tim

Hi Tim
The 0.45amps on your fan is what amps it draws when running,
as long it is 12volts your fine to wire straight in (with a fuse/switch).
hope this helps

Tony

[motorhead]

Tony's right. The impedance of the fan means that's how much current it will draw if 12v is applied across it, so there's nothing to worry about, V=IR and all that.

[mattsmev]

Ivy Watts, I think I dated her once - (not sure anyone will get that joke)

[airforceone]

I've used a similar fan on mine, actually 2 of them, they draw such a small current
There shouldn't be any issues.

I'm using one to draw cool air into the fuel tank cover and the other to suck the hot air out.
As the tank cover is black I'm expecting it to be a bit toastie under there if the sun is out
so may upgrade to a PC BLOWER of some kind.

I've connected them to the main relay so they only come on with
The ecu. May add a small timer to keep them on for a minute
Or two after switching off.

Ned

[martinw]

matt......you're not getting away with that without at least a *sigh* from me!

Martin

[motorhead]

mattsmev Very good. I knew an environmentalist called Theresa Green...