American Power Conversion 208/220 installation manual EPO switch wiring, Diameter

Site Preparation – Operating Environment

Recommended phase-conductor sizes [AWG] for a 86°F (30°C) temperature

environment

UPS/AWG sizes	Mains input	AC output	DC input
	[AWG]	[AWG]	[AWG], 75°C Wire
10 kVA	8	8	1
15 kVA	6	6	1
20 kVA	4	4	1
30 kVA	1	1	1

Use Molex lug type or equivalent, and crimp to manufacturer’s specifications.

Note

Cable Size	Cable Lug Type	Crimping Tool	Die	Terminal Bolt
[AWG]				Diameter
12	YA12CL2TC38	MD7-34R	W12CVT	0.2 in/6 mm
8	YA8CL2TC38	MD7-34R	W8CVT	0.2 in/6 mm
6	YA6CL2TC38	MD7-34R	W5CVT	0.2 in/6 mm
4	YA4CL2TC38	MD7-34R	W4CVT	0.2 in/6 mm
1	YA1CL2TC38	MD7-34R	W1CVT	0.2 in/6 mm

WARNING!

At 100% non-liniear load (EN50091-3 standard), the neutral shall be rated for 200% phase current.

EPO switch wiring

The UPS must be connected to either a dry contact or a 24VDC Emergency Power Off (EPO) switch.

See “Pin connections J108 (for EPO wiring options)” on page 37

990-1598B Smart-UPS® VT 10-30 kVA, 208/220 V Site Preparation and Installation Manual 15