One last point:
Breakers used to feed motors are sized to withstand the inrush current that they draw.
This means that, unlike resistive loads, the running current from a breaker to a motor load will typically be about half of the nominal breaker rating.
e.g. a 35A 2-pole breaker will be mated to a motor that draws 17 A in normal, full-load service.
So, the customer's feeder conductors are even more conservatively sized than the above, quick-snap calculation implies.
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His actual running loads are not even tapping half the available feeder current -- almost certainly.
Last edited by Tesla; 12/23/12 08:57 PM.
