How to hook up a frequency meter for a generator?
Ed.
Answer:
I think that jesem47 is correct if you have the complete meter. Sometimes panel meters that are marked as indicating various things are simply 0-1mA dc movements that must be connected to some kind of signal processing circuit that converts the measured quantity to a 0-1mA signal. If that is the case, applying 24 VAC through a fuse larger than 1mA could fry the meter. Of course, if you don't have the complete meter, you probably don't care what happens to it. If you want to check it out completely without frying it, start with a series resistor of sufficient resistance to limit the current to 1mA with what ever voltage you apply for test purposes.
You should probably remove the wire from the back. It may be a shorting wire that was installed to protect the meter during shipping. Unless it has a very high resistance, it is not suitable for connecting to a voltage source.
first of all you need to know the working voltage of your meter, as far as i know, frequency meters are connected across the line like a voltmeter, if you like to test your meter, install a series fuse (500ma is safe enough) and measure across a 24 volts ac source, then measure across your 110 volts outlet, if fuse won't break then try it on your genset, but don't take out the fuse, if all is well, then you can eliminate the fuse and connect it permanently across your line voltage.
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