Powerware 9170+ - Manual (Page 27)

23 Powerware ® 9170 User's Guide S LTM-1344 B Uncontrolled Copy
C H A P T E R 4
E
LECTRICAL
I
NSTALLATION
NOTE If you have a plug-receptacle unit, continue to UPS Startup" on page 49.
W A R N I N G
Only qualified service personnel (such as a licensed electrician) should perform the
electrical installation. Risk of electrical shock.
The Powerware 9170 UPS input power may be hardwired through
conduit to either a main power source circuit breaker or to an optional
external bypass switch. For hardwired installations, it is recommended
that you install a Powerware bypass switch to enable power transfer
during maintenance or UPS downtime. If a bypass switch is used, both
UPS input and UPS output must be hardwiredć through separate
conduits ćto the bypass switch, as shown in Figure 18.