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Supply and Motor Lead Wiring and Connections
Only copper conductors should be connected to the compressor motor due to the possibility of
galvanic corrosion as a result of moisture if aluminum conductors are used. Copper conductors are
recommended for supply leads in the starter panel.
Suggested starter panel line- and load-side lug sizes (when lugs are provided) are noted in the
starter submittals. These submitted lug sizes should be carefully reviewed for compatibility with
conductor sizes specifi ed by the electrical engineer or contractor. If they are not compatible, the
electrical engineer or contractor should specify the required lug sizes for the particular application.
Ground lugs are provided in the motor terminal box and starter panel. The motor terminals are
supplied with connection pads that will accommodate bus bars or standard terminal lugs (crimp
type recommended). Terminal lugs are fi eld-supplied. These connection pads provide additional
surface area to minimize improper electrical connections. Also, a 3/8-inch bolt is provided on all
connection pads for mounting the lugs. Figure J-1 illustrates the connection between the motor
connection pads and the terminal lugs.
Shipment and Assembly
All style hermetic centrifugal units ship as a factory assembled, factory tested package, ready to rig
into place on factory supplied isolation pads.
Figure J-1 — Electric Connections
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CTV-PRC001-E4
Jobsite Connections