Best Unity/I UT3100, Installation Manual

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UT340, UT360, UT380, and UT3100
Planning and Installation Manual
12
Figure 3: UT340 - UT3100 Installation Wiring Diagram, Typical Installation,
No External Maintenance Bypass Cabinet
NOTE 1: (a) For a UT340 or UT360, see Table 1 in
Section 102 for recommended input overcurrent
protection. (b) For a UT380 or UT3100, see
Table 5 in
Section 103 for recommended input overcurrent
protection.
NOTE 2: (a) For a UT340 or UT360, see
Table 2 in
Section 102 for recommended output overcurrent
protection. (b) For a UT380 or UT3100, see
Table 6 in
Section 103 for recommended output overcurrent
protection.
NOTE 3: You must provide overcurrent protection and
UPS input AC disconnect means.
NOTE 4: (a) Refer to any instructions provided with the
DC disconnect (DCD) and pre-charge/discharge switch.
(b) The pre-charge/discharge box must be located less
than 10 feet (3 m) from the DC disconnect.
ADDITIONAL NOTES:
A qualified electrician must install the UPS according
to all applicable codes.
All power and control wires must be in separate
conduits.
The grounding electrode conductor (protective
earth—PE) must be the same size (ampacity) as the
UPS input conductors. Conduit is not an acceptable
grounding electrode conductor—see National Electrical
Code Section 250-91(a).
A UT340 or UT360 unit is wired from the factory as a
separately derived system. Output neutral is bonded to
equipment ground through main bonding jumper inside
the UPS. See National Electrical Code Article 250-5(d)
and 250-26 for proper installation grounding.