I was thinking that the higher than rated FLA reading was due to an overloaded Motor, but since the posting person mentioned Motors not fully loaded, then maybe the Capacitor is oversized and/or sticky bearings?
As already mentioned, ampere readings should be made on the Common line (for overall FLA), then across the Run winding lead, and finally the Auxiliary winding lead, to compare the figures.
Auxiliary winding should have high load current during Locked Rotor Start, eventually topping off at a percentage of the main "Run" winding's load current.
Excessive current in the Auxiliary winding is limited by the Capacitor (Xc).
Having too large value of a Capacitor will result in an increasing Auxiliary winding current, along with a corresponding shift backwards in time phase, as the Motor accelerates.
Just a little more info to add to the great info already posted!
Scott35
p.s. what's this/these Motor(s) driving? I hope only Fans if they are straight PSC (not Cap Start/Run).
S.E.T.
