System Application Guide
SAG582127000
Spec. No. 582127000 (Model 721
NPBB
)
Issue AF, February 26, 2014
Page 103 of 125
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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Battery Input
Battery Input Wire Sizes and Lugs Selection
•
When Distribution Panels Providing Battery Disconnect Fuse/Circuit Breaker Positions are
Provided:
The rating of the disconnect device determines the input battery lead wire size requirement.
The distribution panel ordered determines the lug hole size and spacing requirements. For wire size and
lug selection; refer to the following.
a) When Distribution Panels Using Bullet Nose Type Devices (TPS/TLS Fuses and/or Bullet Nose
Type Circuit Breakers) are Provided:
Lug-terminated input battery leads are connected to the
individual battery busbars and battery return busbar (if equipped) located on the distribution panel. If
the distribution panel is not equipped with a battery return busbar, battery return connections are
made to a separate return busbar.
The distribution panel’s individual battery busbars and battery return busbar (if equipped) provide
1/4-20 studs for installation of customer-provided two-hole lugs that have 5/8 inch centers and 1/4
inch bolt clearance holes. Customer must provide (or order) lug mounting hardware. The
distribution panel’s individual battery busbars and return busbar (if equipped) are designed to
accommodate the lugs listed in
and
battery wire sizes and lugs for various loop lengths per battery disconnect fuse/circuit breaker
ampere rating. Maximum size of wire to be connected to a single fuseholder/circuit breaker
position is 2 AWG. For wiring up to 350 kcmil, see
or see the following part numbers in
ACCESSORY DESCRIPTIONS for available adapter busbars:
, and
and
The separate return busbar (if furnished) provides 3/8-16 captive nuts for installation of customer-
provided two-hole lugs that have 1 inch centers and 3/8 inch bolt clearance holes. Customer
must provide (or order) lug mounting bolts and hardware. The separate return busbar (if
furnished) are designed to accommodate the lugs listed in
recommended load distribution wire sizes and lugs for various loop lengths per fuse/circuit
breaker ampere rating.
b) When Distribution Panels Using GJ/218 Circuit Breakers, TPH Fuses, or TPL-B Fuses are
Provided:
Lug-terminated battery leads are connected to the individual battery busbars and battery
return busbar (if equipped) located on the distribution panel. If the distribution panel is not equipped
with a battery return busbar, battery return connections are made to a separate return busbar.
The distribution panel’s individual battery busbars and battery return busbar (if equipped) provide
3/8-16 captive nuts or studs for installation of customer-provided two-hole lugs that have 1 inch
centers and 3/8 inch bolt clearance holes. Customer must provide (or order) lug mounting bolts
(if required) and hardware. The distribution panel’s individual battery busbars and battery return
busbar are designed to accommodate the lugs listed in
recommended battery wire sizes and lugs for various loop lengths per battery disconnect
fuse/circuit breaker ampere rating.
The separate return busbar (if furnished) provides 3/8-16 captive nuts for installation of customer-
provided two-hole lugs that have 1 inch centers and 3/8 inch bolt clearance holes. Customer
must provide (or order) lug mounting bolts and hardware. The separate return busbar (if
furnished) are designed to accommodate the lugs listed in
recommended load distribution wire sizes and lugs for various loop lengths per fuse/circuit
breaker ampere rating.
•
When Distribution Panels with Battery Disconnect Fuse/Circuit Breaker Positions are NOT
Provided:
Lug-terminated input battery leads are connected to the battery busbar and battery return
busbar. These busbars provide 3/8-16 captive nuts for installation of customer-provided two hole lugs
that have 1 inch centers and 3/8 inch bolt clearance holes. Customer must provide lug mounting bolts
and hardware. Battery wire size and lug requirements are determined by site requirements. For wire size
and lug selection; refer to the following.
The battery busbars are designed to accommodate the lugs listed in
recommended battery wire sizes and lugs for various loop lengths per required battery branch circuit
ampere rating.
