Emerson 225-600KVA Recommended conduit and cable sizes from Liebert NX UPS to DC supply

Specifications

Table 8	Recommended conduit and cable sizes from Liebert NX UPS to DC supply
UPS Rating
kVA		(#) Conduit Size, Ph, G
225		(2); 2C; 2-500kcmil, #1/0AWG
250		(2); 2C; 2-600kcmil; #1/0AWG
300		(2); 2.5C; 2-600kcmil; #2/0AWG
400		(3); 2.5C; 2-600kcmil; #3/0AWG
500		(3); 2.5C; 2-750kcmil; #4/0AWG
600		(5); 2.5C; 2-600kcmil; 250kcmil

The recommendations in this table are guidelines only and are superseded by local regulations and codes of practice where applicable:

1.Recommended cable sizes are 75C (THW) wire at 86°F (30°C) ambient.

2.For continuous operations not at 86°F (30°C), Emerson recommends selecting the appropriate cable type based on the particular installation requirements.

3.The ground conductor should be sized according to the fault rating, cable lengths, type of protection, etc. The ground cable connecting the UPS to the main ground system must follow the most direct route possible.

4.When laying the power cables, do not form coils. Coiling power cables increases the likelihood of electromagnetic interference.

Table 9	Battery torque values
Battery				Torque Value
Code		Manufacturer	Battery Model	in-lb (Nm)
PR			UPS12-300MR	110	(12.4)
RR			UPS12-350MR	110	(12.4)
UR		C&D Batteries	UPS12-400MR	110	(12.4)
WS			UPS12-490MRLP	110	(12.4)
XR			UPS12-540MR	110	(12.4)
PX			HX300-FR	65	(7.3)
RX			HX330-FR	65	(7.3)
UX			HX400-FR	65	(7.3)
WX		Enersys	HX500-FR	65	(7.3)
XX			HX540-FR	65	(7.3)
2K			16HX800F	100	(11.3)
4K			16HX925F	100	(11.3)
QA			27HR3500	65	(7.3)
SA		East Penn	31HR4000	65	(7.3)
WA			31HR5000	65	(7.3)
YA			HR5500	65	(7.3)

31 Liebert® NX™