Thanks a lot for this man, I followed your steps and its pumpin cold air in there as we speak

and thrawn, It doesnt seem too loud, but I guess I'll let you know about the fire thing, heh.. lol

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As long as you wire it like shown to a cord that can handle the fan's output, which shouldn't be much, you'll be fine. I have one connected to my hood and then the ducting leading from the fan to my exhaust so it's pulling air through the hood and I'm able to take the 20' of ducting I have across the hall to pull air from my airconditioned bedroom. Works very nice.

I like to put an "Cooling In Line Voltage Thermometer" between the power source and the fan (you can put the thermometer after the fan, but you have to have a little understanding of the electrical current). If you do this, you can set the thermometer to whatever temp you want your fan to come on at. This keeps my room a +/- 5F (ie: 70-75F, or 75-80F). If i suck the outside air 24/7 my temps range jumps to +/- 30F...big difference. Make sure you get a "cooling" thermometer not a "heating" one, there is a difference. Of course if your using this fan to just pull air away from your lights then this doesn't apply. If anyone has any questions about the more complicated wiring, Im an electrician, I can make you a diagram.

i hate to thread jack and all but i have not been able to find the info i need by searching and dont think it warrents a new topic. i am in the process of putting together a grow box for my first real grow. i have the lighting situation under control but after buying a digital themp gauge from walmarts i realized that with no lights in my box the temps are sitting around 79f.. im going to need to get the temps lower and want to use a few pc fans placed around the bottem for fresh air. then wire in a duct fan with a diy carbon filter.figure put the exhaust fan in a corner running up a wall in my closet with the filter and pipping hidden by clothes. i dont need massive air flow. i am trying my luck with doing 12/12 from seedlings. so under 3ft tall plants. prolly going to end up with 4 plants going, with a 5th one almost 2 weeks into flowering now i think, and its been tied down one time but is around the 1 1/2 foot mark..

i just dont get the wirring, and get freaked out by electricity.i cant figure out how to use pc fans.. i have alittle knowledge about pc power supplys. i rigged one to work as a ps for my lipo battery charger.

thanks for any and all help.. if there is pm's on this site feel free to use that, i dont want to jack this guys thread to hell.

Try these threads:

Computer fan wiring 1

Computer fan wiring 2

You dont need to be so concerned with a fan for the intake of air, its all about the air being expelled. I dont have intake fans in my room just a larger intake hole with a 600cfm fan, but i have a closet and not a box. If you have issues of heat, and im sure you will once you get a light in there, then you may need to have a small air conditioner in front of your intake hole.

Not so long as the extention cord wire is the same size or larger.And to address the ground.Attach it to the blower case

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