15
1
5
8
3
6
10
2
9
4
7
11
12
13
6 – Wiring (continued)
6-7 AC Input/Output Wiring (Single UPS)
After de-energizing all input and output (AC and DC) of the UPS •
system, remove the terminal block cover from the UPS system.
If you did not connect the ground cable in •
Section 6-6, connect the
UPS system’s grounding terminal
A
to your facility’s earth ground
B
with a 4 AWG (5.189 mm) ground cable. Keep the ground cable
connected at all times after installation.
Remove the UPS system’s front bezel to expose the circuit breaker. •
First, confirm that the main input circuit breaker switch
A
and
the bypass input circuit breaker switch
B
are both off. Second,
confirm that the manual bypass circuit breaker switch
C
is off.
Third, confirm that the output circuit breaker switch
D
is off.
Confirm the phase of each cable, then connect the cables according •
to the UPS system terminal block diagram in
Section 6-3. See
Section 6-5 for cable size requirements. Cabling should be
protected by flexible conduit and routed through the appropriate
knockouts in the terminal block cover. Warning: Observe proper
phase by connecting R to R, S to S, T to T and N to N. Failure
to observe proper phase will damage the UPS system and
create a risk of personal injury and property damage.
Replace the UPS system’s terminal block cover.•
1
1
2
4
5
2
3
4
5
Main
Input
O
OFF
O
OFF
O
OFF
O
OFF
A
3
Front Panel
B
A
Back Panel
B C D
200803004 93-2793 SU80k manual 4C.indd E15200803004 93-2793 SU80k manual 4C.indd E15 6/16/2008 1:43:19 PM6/16/2008 1:43:19 PM
