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Old 12-17-2005, 07:07 PM
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Wiring an Hour Meter to my Compressor.

I would really appreaciate help from some folks..

I have received my hour meter and there were no wiring diagrams with it.
I have a basic idear of what I should do but need confirmation if what I'm thinking, is correct?

The hour meter has two terminals in the backside, neither are marked + or - so polarity is not a factor (I think). I was told that it should be run in parallel on the motor side of the pressure switch?

A buddy of mine came up with the following schematic (if that's what you want to call it)

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Old 12-17-2005, 07:15 PM
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that should do it but I AM NOT A ELECTRICIAN

you want it to run with the motor so at the pressure switch on the motor side is where i would put it!


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Old 12-17-2005, 08:52 PM
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That will work, as long as the hour meter is a 220V rated unit.If the meter is 120V,connect 1 leg to a neutral on the compressor or if no neutral,connect it to ground.The other leg will still conect to a motor side terminal on the pressure switch.I know it's not "code" to hook up to ground to power the meter,but in this case,as long as the compressor is grounded,the current is so small through the meter that there should be no problems.

George
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Old 12-17-2005, 09:22 PM
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I made sure I got the correct meter for my application.

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Old 12-17-2005, 09:33 PM
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Doc here,

Check with your supplier...

If I read the numbers correctly, It's a 277 VAC 20 Amp meter (meaning 3 phase)

It may work for 1 phase 220, / 110 but I'd Check to be sure..

Doc


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Old 12-18-2005, 08:38 AM
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Doc,
I will email them to find out.
On their spec page for this model http://www.redingtoncounters.com/hou...33hmspecs.html There is no mention of Amps. It has a range of 20V - 277V AC, not 20Amp. Being up to 50/60Hz (i'm no electricial) but would that not indicate single phase?

Frank
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Old 12-18-2005, 10:24 AM
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You're good to go-
That meter is OK on 10V-277V DC and 20V-277V AC-basically it'll work on almost any supply voltage. Hook it up as your diagram shows.The amperage draw is only milliamps,so any wire with an insulation rating over 240V will be OK.

George
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