> There was an article in Circuit Cellar (or maybe it was Nuts & Volts) a
> few years back, using a Toroid with a few wraps of the 120volt load

I'm looking at making an isolated ammeter using the ACS712
and an LM358

http://www.allegromicro.com/Products/Current-Sensor-ICs/Zero-To-Fifty-Amp-I=
ntegrated-Conductor-Sensor-ICs/ACS712.aspx

The ACS712 range has 3 versions, +/-5A, +/-20A, +/-30A

https://www.sparkfun.com/products/8882

Joe=20

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