Thanks to winnie and triple for answering this question for me. This is exactly what I figured was the answer. We do have a UPS (A & B) but we can not take the ckt down w/o an act of congress. My original thought of placing this clamp around a single lead going into the breaker should accomplish this but I will seek our in house electrician to perform the work.
Until then, I will stick to using a Flexiclamp to get approxiimate readings.
