240v Amps Measurement - Electrical - Contractor Talk

240v Amps Measurement

 
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Old 07-30-2020, 06:10 PM   #1
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240v Amps Measurement


Hi! I’ve seen many guys ask this question on many different forms. The Actual answer they ask never seems to be answered. All of the responses rabbit-hole off in many directions.
THIS IS THE SCENARIO:
A generator is connected to the home properly through rated cabling, interlock, etc.
THIS IS THE QUESTION:
I need to meaure the TOTAL ACTIVE LOAD. (Amps not watts) being drawn from the genset. I need to know how much the A bus and B bus are drawing IN TOTAL (because the A and B bus will be different.
I want to do this with a SINGLE meter which will be permanently installed. Is it possible?
Or must I use 2 meters, 1 per leg?
I fully understand all the electrical principles (except this one, hehehe)
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Old 07-30-2020, 06:39 PM   #2
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Re: 240v Amps Measurement


You’ll need one pick up per leg. If you want to use just one meter there are 3 phase panel mount amp meters. Use 2 of the pick ups.

Tom

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Old 07-30-2020, 06:45 PM   #3
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Re: 240v Amps Measurement


If you want to get down to brass tacks, use two ammeters... one on each leg.
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Old 07-30-2020, 08:31 PM   #4
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Re: 240v Amps Measurement


I bought a TED on Inner10's recommendation.

It works perfectly for this situation.
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Old 07-30-2020, 10:52 PM   #5
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Re: 240v Amps Measurement


Install the two induction coils on the service feed wires, wire in series to meter(300-400% of genset Amp output) connection
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Old 08-02-2020, 01:56 AM   #6
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Re: 240v Amps Measurement


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
I bought a TED on Inner10's recommendation.

It works perfectly for this situation. <img src="http://img.contractortalk.com/smilies/thumbsup.gif" border="0" alt="" title="Thumbsup" class="inlineimg" />
What is a TED meter?
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Old 08-02-2020, 09:10 AM   #7
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Re: 240v Amps Measurement


Quote:
Originally Posted by TommyNet View Post
What is a TED meter?
https://www.theenergydetective.com/submeter/
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Old 08-02-2020, 09:32 PM   #8
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Re: 240v Amps Measurement


If you were the only customer on the the step down transformer, you could meter the High Voltage side of the transformer..... with ONE meter and ONE pickup....

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