EnerSys Alpha GMT 125 Series, Technical Manual

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11
C048-742-30 R04, Rev. B (03/2021)
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 125A 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�
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� REFER TO SECTION 7
FOR COMPRESSION LUG SPECIFICATIONS, TOOLING,
AND ORDERING INFORMATION�
NOTICE:
Table 4. Input Termination Specifications
TERMINATION
TYPE
HOLE/
STUD SIZE
CENTER
TO CENTER
RECOMMENDED
TORQUE VALUE
Threaded Stud 1/4 in� 5/8 in� 4.17 ft∙lbs
Step 1.
Remove the plastic input safety covers by pulling away from
panel (see Figure 11)�
Step 2.
Install the return cables/lugs to the return input studs located
on the rear of the panel (see Figure 12)� Ensure all that
hardware is tightened�
Step 3.
Install the hot input cables/lugs to the hot input studs located
on the rear of the panel (see Figure 13)� Ensure that all
hardware is tightened�
Step 4.
Reinstall the input safety covers from Step 1�
WARNING! ELECTRICAL HAZARD
FAILURE TO REINSTALL THE INPUT SAFETY COVERS
WILL CREATE AN ELECTRICAL HAZARD�
Figure 11. Input Safety Covers
Figure 12. Return Input Landing
Figure 13. Hot Input Landing