UPS with Bypass Electrical Installation
33
Powerware
®
9170
+
UPS User’s Guide S Rev B www.powerware.com
The following notes are referenced in the non -isolated system wiring
diagrams (Figure 22 through Figure 24).
NOTE 1 The customer must provide input overcurrent protection as
stated in NEC Section 240-21 or local codes. Size the protection device
according to local code requirements (see Table 1 on page 21).
NOTE 2 The UPS bypass switch must be installed within sight of the
UPS. To properly install, complete the voltage and phase check procedure
in “Startup for Hardwired Units” on page 68. The wires coming from the
side of the switch must be connected as described in Step 11 on page 30.
NOTE 3 All AC circuit conductors, including the neutral conductor,
mustbethesamesize(ampacity),havethesamerating(75°C) copper wire,
and be sized according to the input circuit breaker. The UPS input and
output conductors must be run through separate conduits.
NOTE 4 The customer must provide output overcurrent protection. See
NEC Section 240-21 or local requirements. See Table 1 6 and Table 17 on
pages 97 and 99 for maximum output overcurrent protection device
ratings.
NOTE 5 See “Equipment Clearances” on page 7 for installation and
service clearances before installing the UPS. Use flexible conduit on the
UPS or the external battery cabinet if either must be moved.
NOTE 6 External UPS battery cabinets are optional. See “Battery
Cabinet Installation” on page 57 for installation instructions.
NOTE 7 UPS output circuits shall be installed in dedicated conduit
systems and not shared with other electrical circuits.
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