Join Date: Dec 2002
Location: Saint Louis, Missouri
Re: How to read my meter. Please help.
With a meter set to the 10A scale (and the leads plugged into the right spots as some meters need the test leads to be moved to the appropriate locations and the selector knob also set right) one of the test leads will connect to the supply of power like a battery positive post, the other lead will go to the power lead of the fan motor, and then the motor is grounded to the battery.
The current or electricity comes out of the battery into the meter through one lead, then out the other lead to the fan motor then out from the motors ground to the battery negative post. You then will get a reading.
If it's under 10A then you should get a reading AND the device should work (in your case the fan motor should start spinning). The meter if it then reads 2.10 then this means the fan is drawing 2.1 Amps of current.
Be aware that some meters measure up to 10A and if this is exceeded then the meter could burn up or it might just blow a fuse inside of it.
Sometimes if I'm unsure if something draws more than my meter I place an inline 10A fuse on the device and if it works and the fuse doesn't blow then I know my 10A meter can measure it. If it blows a test 10A fuse then I know it draws more than 10A and I don't want to put my 10A max meter on it.
If your motor does draw 2.1A of current then get a 10A or larger switch and not some cheap off shore switch but a quality switch. You could get by with a 5A but sometimes motors draw more on startup and the 10A should be a lot safer and longer lasting.
1974 Spirit Of America Nova (being restored), 1973 Nova Custom, 1968 Chevy II (Garage Find 2012)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.