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Notes for Figure 5

CAUTION!

The AC output circuit is considered as a separately-derived source. To ground this circuit, the installing electrician MUST connect the

neutral-to-ground wire (the green and yellow wire labeled WIA-0424) to the proper output terminal before making any other connections

to the UPS; for the proper output terminal connection, find your output configuration in Figure 9 on pages 22 - 24.

NOTE 1:See Table 6 on page 8 for the recommended input circuit breaker

size. The customer must provide overcurrent protection per National

Electrical Code (NEC) Article 240 or local code requirements.

NOTE 2:The UPS bypass switch/AC disconnect must be installed within

sight of the UPS. To properly install, complete the voltage and phase

check procedure in Section 304.

NOTE 3:The customer must provide and install this ground (earth) con-

nection per NEC Sections 250-5(d), 250-26, 250-91 and 250-92, or local

code requirements. This grounding electrode conductor must be at least

#8 AWG (8.36 mm

) per NEC table 250-94. If the UPS input circuit conduc-

tors are larger than #8 AWG (8.36 mm

), Best Power requires the ground-

ing electrode conductor to be the same size (ampacity) as the largest UPS

input circuit conductor. See NEC Section 110-3(b). Conduit is not consid-

ered an acceptable grounding electrode conductor. Best Power recom-

mends that you do notroute the grounding electrode conductor through

metallic conduit. This conductor may require protection from physical dam-

age according to local code requirements.

NOTE 4:All AC circuit conductors, including the neutral and equipment

grounding conductors, must be the same size (ampacity) and have the

same rating (75° C copper wire) and be sized according to the input pro-

tection device. The UPS input and UPS output conductors must be run

through separate conduits.

NOTE 5:The customer must provide output overcurrent protection. See

NEC Section 240-21 or local requirements. See Table 7 on page 9 for

maximum output overcurrent protection device rating and Table 11 on page

25 for maximum output current per phase (leg).

NOTE 6:See Figure 9 for proper output wiring termination and neutral-to-

ground (neutral-to-earth) connection.

NOTE 7:For maximum protection against electrical noise, use isolated

ground receptacles. See NEC Section 250-74, Exception #4, or local code

requirements.

NOTE 8:See Section 102 in this manual for installation dimensions before

installing the UPS. Use flexible metal conduit on the UPS or the external

battery cabinet if either must be moved.

NOTE 9:External UPS batteries are optional. See the information that

came with your battery pack for installation procedures.

NOTE 10:UPS output circuits shall be installed in dedicated conduit sys-

tems and not shared with other electrical circuits.

NOTE 11:The output load current must be balanced. See Table 11 on

page 25 for the maximum output current per phase (leg). The load fuse or

circuit breaker should be sized to match the load current requirements.