Installation Instructions
The following instructions are for the installation of a Siemens 200% rated neutral kit in a Revised P1, 400 amp
Panelboard. The parts provided in this kit are for connection to a 1-phase 3-wire system or a 3-phase 4-wire
system. The 42NLK**A kits are for 200% rated neutrals sometimes required for panels supplying loads with
high harmonic loads, such as personal computers. Caution: The 200% neutral requires that the line cable and
connectors be doubled, for example instead of (1) cable for 400 amp panel use (2) cables. This kit provides a
single 600 kcmil line lug to be used in conjunction with the 600 kcmil neutral line lug supplied with the main lug
or main breaker assembly installed in the panelboard to meet the double cabling requirement. Kits include
42NLK30A, 42NLK42A & 42NLK54A for panelboards with 30, 42 & 54 circuits, respectively. (NOTE: Use
42NLK54A for 66 circuit panelboards.)
11-A-1107-01 Rev. 01
-3--2-
DANGER
Hazardous voltage.
Will cause death or
serious injury.
Keep out.
Qualified personnel only.
Disconnect and lock off all
power before working on
this equipment.
3. Remove the existing
neutral terminal strips (item 1)
and replace them with
the strips provided in this kit.
Use the #10-24 x 1-1/8” socket head thread-
forming
screws (item 8) to fasten them to the neutral risers.
7. Attach main cables to the lugs and branch cables to
the branch strips. If no torque values are specified
on the connectors, refer to the Hardware Tightening
Torque label located on the rear of the deadfront
.
9. Before energizing the panel, ensure that all con-
nections have been properly torqued, that the
deadfront is installed and that all fillers are in place.
BRANCH NEUTRAL CONNECTOR STRIP (for COPPER cable ONLY) *
600 kcmil NEUTRAL LUG
SERVICE GROUND ELECTRODE LUG
#10-24 x 9/16” THREAD-FORMING SCREW
1/4”-20 x 1” CARRIAGE BOLT
1
1
2
1
THIS KIT CONTAINS THE FOLLOWING ITEMS:
ITEM DESCRIPTION QTY
1
2
3
4
5
NEUTRAL
LUG
POSITION
NEUTRAL
CROSS BUS
BASE
RAIL
DEADFRONT
SUPPORT
DEADFRONT
3
MAIN
END
FEED-THRU
OR SUBFEED
END
NEUTRAL
RISER
NEUTRAL
CROSS BUS
2
1
1/4”-20 BELLEVILLE WASHER NUT 1
6
ANTI-TURN PLATE 1
7
#10-24 x 1-1/8” SOCKET HEAD THREAD-FORMING SCREW **
8
8
4
6
7
5
* (2) for 42NLK30A & 42NLK42A; (4) for 42NLK54A
** (4) for 42NLK30A & 42NLK42A; (8) for 42NLK54A
5. To mount the service ground electrode lug (item 3)
-- if required for service equipment applications --
position the lug assembly on top of the neutral riser
and align the two thru-holes with those on the riser.
Fasten with (2) of the #10-24 x 9/16” thread-forming
screws (item 4).
200% LABEL 1
9
9
1. Lock off all power supplying this equipment
before working on it.
8. Place 200% Neutral label (item 9) on the front of
the deadfront (or the rear if no room on the front).
2. Remove the deadfront.
6. Torque all connections to the values specified on
the Hardware Tightening Torque label affixed to
the rear of the deadfront.
4. Determine which of the line neutral lug positions
does not have a 600 kcmil lug installed. If there is a
smaller lug mounted there, remove it. Insert
the 1/4”-20 x 1” carriage bolt (item 5) through the
square hole on the neutral riser from below, then
place the 600 kcmil lug (item 2) and the anti-turn
plate (item 7) as shown. Finish with the
1/4“-20
belleville washer nut (item 6).
