Installation Drawings
21
Table 3 Liebert-supplied interconnect wiring for three-input Liebert NXL Maintenance Bypass
Cabinet
Run To From Conductor
A Utility AC - Phase A MBC Bypass AC - Phase A Maintenance Bypass AC - Phase A
B Utility AC - Phase B MBC Bypass AC - Phase B Maintenance Bypass AC - Phase B
C Utility AC - Phase C MBC Bypass AC - Phase C Maintenance Bypass AC - Phase C
D Utility Neutral MBC Neutral System Input Neutral
E Utility Ground MBC Ground System Ground
F Utility AC - Phase A UPS Bypass AC - Phase A UPS Bypass Input - Phase A
G Utility AC - Phase B UPS Bypass AC - Phase B UPS Bypass Input - Phase B
H Utility AC - Phase C UPS Bypass AC - Phase C UPS Bypass Input - Phase C
I Utility AC - Phase A UPS Rectifier AC - Phase A UPS Rectifier Input - Phase A
J Utility AC - Phase B UPS Rectifier AC - Phase B UPS Rectifier Input - Phase B
K Utility AC - Phase C UPS Rectifier AC - Phase C UPS Rectifier Input - Phase C
L Utility Neutral UPS Neutral UPS Neutral
M* MBC Ground UPS Equipment Ground UPS Ground
N UPS Output AC - Phase A MBC Output AC - Phase A UPS Output - Phase A
O UPS Output AC - Phase B MBC Output AC - Phase B UPS Output - Phase B
P UPS Output AC - Phase C MBC Output AC - Phase C UPS Output - Phase C
P1 UPS Output Neutral MBC Neutral UPS Neutral
Q MBC Output AC - Phase A Load AC - Phase A Load AC Input - Phase A
R MBC Output AC - Phase B Load AC - Phase B Load AC Input - Phase B
S MBC Output AC - Phase C Load AC - Phase C Load AC Input - Phase C
T MBC Neutral Load Neutral Load Neutral
U MBC Ground Load Ground Load Equipment Ground
V MBC Terminal Strip UPS External Interface Board Control Wiring
* For detached units only
