American Power Conversion XS 450 -48 user manual AC Kit with Phoenix Terminals Only, Awg

	Neutral Input
Wire Size (AWG)	Wire Size (mm2)	Max Torque (in-lb)	Max Torque (N-m)
350 kcmil – 2 Cu	185 – 35 Cu	275	31.75
	L1, L2, and L3 Input
Wire Size (AWG)	Wire Size (mm2)	Max Torque (in-lb)	Max Torque (N-m)
2/0 – 6 Cu	70-16 Cu	125	13.5
	Earth Ground Input
Wire Size (AWG)	Wire Size (mm2)	Max Torque (in-lb	Max Torque (N-m)
4/0 – 6 Cu	95 – 16 Cu	275	31

Figure 3.3-2 Recommended Torques on Input Connectors

AC Kit with Phoenix Terminals Only

A terminal strip for ac input power connection and a separate “Earth Ground” bar for connection of the safety ground wire(s) is provided. The terminal block is labeled as L and N for each rectifier with the terminal block for rectifier one being the leftmost. At the front of the ac input enclosure, optional single pole or two pole circuit breakers may be provided for each rectifier. The single pole option breaks the “hot” wire going to each individual circuit breaker. The two-pole breaker option simultaneously breaks both the “hot” wire and the Neutral wire. The system may also have no circuit breakers.

The top of the ac input enclosure is provided with four pilot holes for easy alignment of the desired conduit entry holes. A duct is provided so that the ac input connections can be routed up through the unit from the bottom. Two 31.75 mm (1-1/4 inch) conduit entry holes are provided in the bottom of the cabinet.

Individual ac input lines are run for each rectifier. The suggested wire size is 6 mm2 (#10 AWG) rated at 90°C or higher, however, the ambient temperature and number of wires in a conduit must also be considered in accordance with all applicable code requirements.

Wire Size	(AWG)	Wire Size (mm2)	Max Torque (in-lb)	Max Torque (N-m)
6 - 10	Cu	16 –6	16	1.8

Figure 3.3-3 Recommended Torques for Terminal Block Connections

Magnum XS 450 Power System –48 VDC User’s Manual Page 10