9
C048-781-30 R01, Rev. B (01/2020)
4.4
4.4 Input Connections
Input Connections
WARNING! ELECTRICAL HAZARD
INPUTS MUST BE PROTECTED BY A LISTED
CIRCUIT BREAKER OR BRANCH RATED FUSE.
THE CIRCUIT BREAKER OR FUSE MUST
BE RATED 375A MAX. MULTIPLE POWER
SOURCES ARE PRESENT, ENSURE ALL
INPUT POWER FEEDS ARE NOT ENERGIZED
BEFORE INSTALLING THEM. ELECTRICAL
INSTALLATION SHOULD ONLY BE PERFORMED
BY QUALIFIED PERSONNEL WITH PROPER
TOOLS AND PROTECTIVE SAFETY
EQUIPMENT. FAILURE TO REINSTALL THE BUS
SAFETY COVER WILL CREATE AN ELECTRICAL
HAZARD.
MAKE SURE THAT ALL FEEDER CABLES HAVE
HEAT SHRINK APPLIED PRIOR TO TERMINATION,
AND THAT NO-OXIDE COMPOUND IS APPLIED TO
ALL COPPER-TO-COPPER CONNECTIONS.
NOTICE
:
Table 3.
Input Termination Specifications
TERMINATION
TYPE
HOLE/
STUD
SIZE
CENTER
TO
CENTER
RECOMMENDED
TORQUE VALUE
Threaded Stud
3/8 in.
1 in.
18.75 ft∙lbs
Step 1.
Flip up the plastic input safety cover to gain access to
the HOT (-) and RTN (+) input bus termination
locations.
Step 2.
Install the RTN (+) cables/lugs to the threaded RTN (+)
input studs as shown in Figure 5. Tighten hardware to
250 in-lbs.
Step 3.
Install the HOT (-) cables/lugs to the threaded HOT (-)
input studs as shown in Figure 6. Tighten hardware to
250 in-lbs.
Step 4.
Reinstall the plastic input safety cover from Step 1.
Figure 5. RTN Input Connections
Figure 6. HOT Input Connections
