I just recentley replaced a scroll compressor (copeland zr18c something) on an Aaon rtu that had a grounded winding. The max operating amp draw is 15A per comp data tag. I draw consitentley 16-16.5 A across all 3 legs. Voltage to the compressor is good, I changed the contactor as well as filter drier, pressures are good around 68 psi back with 18* superheat (I know 18* SH is a little on the high side but there's a consitant load on the system as it serves a large pool area.). Fan cycling for head pressure control keeps it around 225 psi. I weighed in exactley the right charge, and used virgin 22. EVERY connection is tight and I even ohmed out the wires. I have no idea why I have such high amp draw. The second stg comp in the same unit draws around 10A as do both comps in the rtu right next to it serving the same area. I suppose I could just have a tight motor, dunno. Just looking for any input.