Need help wiring 12v dashboard fan into storm shelter
#1
07-28-16, 08:46 AM
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Need help wiring 12v dashboard fan into storm shelter
Ok, I have some experience with 12v wiring...I added some lights and a horn to my small tractor, etc. I am having trouble in this case though. Here's the situation...I have an in ground tornado shelter and have mounted a 12v maradyne car/truck dashboard fan to improve air circulation. The shelter has a 120v outlet. This fan only has 1 wire. I bought a 120v to 12v transformer on eBay. The output of this transformer has 2 wires. How do I wire this up??
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#2
07-28-16, 08:50 AM
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To clarify...this is what I bought thinking it could convert 120v to 12v..Intocircuit® 30W Waterproof LED Power Supply Driver Transformer 120V to 12V. It was only $15 on eBay. The output is 2.5 amps and the high speed on the fan is 2.7 amps, so I figured it's ok.
#3
07-28-16, 09:20 AM
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Welcome to the forums.
Probably not going to work. That's called an LED driver for a reason.
A motor is a completely different type of load. You can try it.
The wire coming out of the fan is positive and the metal frame of the fan is ground.
Probably not going to work. That's called an LED driver for a reason.
A motor is a completely different type of load. You can try it.
The wire coming out of the fan is positive and the metal frame of the fan is ground.
#4
07-28-16, 09:31 AM
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Ok, so do I just tap a screw into the metal base of the fan and put the black wire from the transformer to that?
#5
07-28-16, 09:33 AM
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That should work.
If you're going to mount the fan to something..... the mounting screws would work too.
If you're going to mount the fan to something..... the mounting screws would work too.
#6
07-28-16, 09:34 AM
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The output says 2.5amps and 30watts. Are there other parameters in play than the numbers when considering LED vs. a small fan motor? Why wouldn't it work, if the output parameters make sense?
#7
07-28-16, 12:24 PM
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Does your transformer convert AC to DC? Your fan likely needs DC and not all transformers also concert AC to DC.
#8
07-28-16, 10:50 PM
Group Moderator
Trying it is the only way to know for sure.
LED's are a limited load. A DC motor can be like a dead short to a power supply on startup.
LED's are a limited load. A DC motor can be like a dead short to a power supply on startup.
