Re: [TCML] Ammeter on three phase supply

[dave pierson <dave_p@xxxxxxxxxxx>]

> I have acquired a three-phase 250v alternator that has had its three
> phase output split to provide three single phase outlets of 240v each.

> If I put the three live wires through a current transformer, would it
> give a reading of the total current the alternator is giving out?

    It depends.  8)>>

    IF the load is balanced, same on each phase, I'd expect
    the meter to read ZERO.

> In other words if each phase has a [say] 10 amp load,
> will the ammeter read the total alternator output of 30 amps,
    No.  (as you suspect).

> or would I need three separate CT's and three ammeters?
    Yep.
    OR
    If the currents are 'known' to be balanced:
      ONE transformer/meter
    and multiply by three.
    OR
    three transfromers, one meter AND A SWITCH.
    8)>>

> (I suspect the latter unfortunately)
    Near as i know, and i think i do: yer right... 

    best
     dwp
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