Use and Care Guide

Catalog Number
LC1224L1125 -
Type 1
Model Enclosure
RATINGS:
125A MAXIMUM - SEE MAIN BREAKER RATING IF USED.
BACK-FED BREAKER REQUIRES HOLD-DOWN KIT MBR2M.
120/240 V~, 60 HZ, 1Ø 3W
208Y/120 V~, 60 HZ, 1Ø 3W
RATING LIMITED TO 100A WHEN SUBJECT TO NEW YORK CITY ELEC. CODE BULLETIN NO. 125.
SUITABLE FOR USE AS SERVICE EQUIPMENT WHEN MAIN BREAKER IS
INSTALLED OR WHEN NOT MORE THAN SIX MAIN DISCONNECTING MEANS ARE PROVIDED AND
WHEN NOT USED AS A LIGHTING AND APPLIANCE BRANCH CIRCUIT PANELBOARD (SEE ARTICLE
384-14 OR 408.14-2002 OF THE NATIONAL ELECTRICAL CODE®). WHEN USED AS SERVICE
EQUIPMENT, APPLY "SERVICE DISCONNECT" LABEL(S) TO FRONT NEXT TO APPROPRIATE
BREAKER HANDLE(S).
WHEN USED AS SERVICE EQUIPMENT, UNUSED NEUTRAL BAR TERMINALS MAY BE USED TO
TERMINATE EQUIPMENT GROUNDING WIRES IN THE COMBINATIONS INDICATED FOR EQUIPMENT
GROUND BAR TERMINALS.
TO BOND NEUTRAL TO ENCLOSURE, BEND STRAP PROVIDED TO POSITION FREE END INTO ANY
NEUTRAL TAP HOLE. TIGHTEN CONNECTOR SET SCREW ON BOND STRAP TO 35 LB-IN. WHEN
NEUTRAL IS BONDED, LEFT BAR BECOMES SPLIT NEUTRAL.
SUM OF MH-T BREAKER RATING IS NOT TO EXCEED 110 AMPS PER BRANCH CIRCUIT BUS STAB.
TO RESET BREAKERS WITH TRIPPED HANDLE POSITION BETWEEN "ON" AND "OFF", MOVE
HANDLE TO "OFF" THEN TO "ON".
REMOVE TWISTOUTS FROM TRIM ONLY WHERE BREAKERS WILL BE INSTALLED. ALL OPENINGS
MUST BE FILLED WITH BREAKERS OR FILLER PLATES. USE ONE MBF125M FILLER PLATE TO FILL
100-125A MAIN BREAKER OPENING.
THIS LOAD CENTER IS INVERTIBLE FOR BOTTOM FEED APPLICATIONS.
Indoor Load Center
Hazardous Voltage.
Will cause death, serious injury
or substantial property damage.
Turn off power supplying this
equipment before working inside.
PELIGRO
DANGER
Desconecte el suministro de energía a este
equipo antes de trabajar en su interior.
Voltaje peligroso. Causará la
muerte, lesiones graves o daño
substancial a la propiedad.
IMPORTANT: DO NOT ALLOW PETROLEUM BASED (HYDROCARBON) SPRAYS, CHEMICALS, SOLVENTS
OR ANY PAINT TO CONTACT INTERIOR COMPONENTS. PETROLEUM BASED CHEMICALS CAN CAUSE
DEGRADATION OF ELECTRICAL INSULATING MATERIALS.
Murray Electrical Products
Siemens Energy & Automation, Inc.
Alpharetta, Georgia U.S.A.
T
4099714 Rev.A
OO
USE COPPER OR ALUMINUM 60 /75 C WIRE
SEE BREAKER MARKINGS FOR WIRE SIZE AND TORQUE REQUIREMENTS.
EQUIPMENT GROUND BAR
TERMINALS ARE SUITABLE FOR THE FOLLOWING WIRE COMBINATIONS:
SMALL TERMINALS: ONE 14 TO 6 AWG CU; ONE 12 TO 6 AWG AL; TWO 14
AWG CU; TWO 12 AWG CU; TWO 12 AWG AL SOLID WIRES.
LARGE TERMINALS: ONE 14 TO 2 AWG CU; ONE 12 TO 2 AWG AL; TWO OR
THREE 14 AWG CU; TWO OR THREE 12 AWG CU OR AL; TWO 10 AWG CU;
TWO OR THREE 10 AWG AL; THREE 10 AWG CU SOLID WHEN TORQUED TO 50
LB-IN; THREE 10 AWG CU STRANDED.
DESCRIPTION CAT. NO.
DOOR LOCK QFL2M
FILLER PLATE, 1" LX100FP
MAIN BREAKER FILLER PLATE MBF125M
DESCRIPTION CAT. NO.
100 AMP MAIN BREAKER
125 AMP MAIN BREAKER
MBK100M
MBK125M
100-125 AMP MAIN LUG MLK125M
ACCESSORIES
MAIN LUG / MAIN BR EAKER KITS
USE APPROPRIATE KIT FROM CHART
BELOW TO CONVERT PANEL.
BREAKER HOLD-DOWN MBR2M
GROUND BAR KITS - USE "LX" S ERIES
SHORT CIRCUIT CURRENT RATING
THIS PANELBOARD HAS A MAXIMUM SHORT CIRCUIT CURRENT RATING OF 100,000 AMPS RMS SYMMETRICAL, 120/240V~. THE ACTUAL RATING IS DEPENDENT ON
THE BRANCH BREAKERS INSTALLED IN THIS PANELBOARD AND THE MAIN/FEEDER BREAKER, IF ANY, INSTALLED AHEAD OF THIS PANELBOARD. THE CORRECT
MAIN BREAKER/FEEDER/MAIN BREAKER/PANELBOARD MAIN BREAKER/BRANCH BREAKER SERIES COMBINATIONS TO BE USED ARE LISTED IN THE TABULATION
BELOW. ANY CIRCUIT BREAKER INSTALLED, REPLACED, OR ADDED IN THIS PANELBOARD MUST BE MANUFACTURED BY SIEMENS (MURRAY BRAND) AND MUST
BE OF THE CORRECT TYPE AS INDICATED IN THE TABULATION BELOW. USE OF OTHER CIRCUIT BREAKERS IN THIS EQUIPMENT WILL VOID THE WARRANTY.
MAIN BREAKER
FEEDER/MAIN BREAKER BRANCH BREAKER
WHEN THE MAIN PROTECTING
THE SYSTEM IS A
AND THE BREAKER
PROTECTING THIS
PANELBOARD IS A TYPE
AND THE BRANCH
BREAKERS INSTALLED
ARE TYPE
THEN THE MAX.
SHORT CIRCUIT
CURRENT
RATING IN RMS
SYMMETRICAL AMPS,
120/240 V~ IS
MP-T
MP-T, MG, MH-T, MP-HT,
MP-MT, MP-GT, MP-HGT,
MP-ET, MP-HET, MP-AT
MP-HAT
10,000
22,000
NONE USED
65,000
‡ THIS PANELBOARD IS EITHER A MAIN LUG DEVICE THAT MAY BE CONVERTED TO MAIN BREAKER WITH THE ADDITION OF FIELD INSTALLED MAIN BREAKER KIT OR A MAIN
BREAKER DEVICE THAT MAY BE CONVERTED TO MAIN LUG WITH THE ADDITION OF MAIN LUGS. SEE ACCESSORY TABLE FOR CATALOG NUMBERS OF APPROPRIATE KITS.
SR-M1H
PANELBOARD MAIN‡
AND THE INSTALLED
MAIN BREAKER IN
THIS PANELBOARD
IS A TYPE
NONE USED
OR M1
MP-T, MP-HT, MP-MT
NONE USED
100,000
NONE USED
MP-T, MH-T, MP-HT, MP-MT,
MP-GT, MP-HGT, MP-ET,
MP-HET, MP-AT, MP-HAT
NONE USED
MP-MT
M1 OR MP-HT
NONE USED
NONE USED
NONE USED
MP-HT, MP-HET,
MP-HGT, MP-HAT
300V T FUSES - 200A MAX
NONE USED,
MP-T, MP-HT OR MP-MT
NONE USED,
M1 OR MP-T
NONE USED,
M1 OR MP-MT
NONE USED
OR M1
NONE USED OR SIEMENS BREAKER TYPES JXD2(-A), JD6(-A),
JXD6(-A), HJD6(-A), HJXD6(-A), LD6(-A), LXD6(-A), HLD6(-A),
HLXD6(-A), MD6, MXD6, HMD6, HMXD6, ND6, NXD6, HND6,
HNXD6, OR CLASS J, T, R OR L FUSES
SIEMENS BREAKER TYPES JXD2(-A), JD6(-A), JXD6(-A),
HJD6(-A), HJXD6(-A), LD6(-A), LXD6(-A), HLD6(-A), HLXD6(-A),
MD6, MXD6, HMD6, HMXD6, ND6, NXD6, HND6, HNXD6,
OR CLASS J, T, R OR L FUSES
MP-HT
NONE USED NONE USED MP-MT
MP-T, MH-T, MP-HT, MP-MT,
MP-GT, MP-HGT, MP-ET,
MP-HET, MP-AT, MP-HAT
MP-T, MH-T, MP-HT, MP-MT,
MP-GT, MP-HGT, MP-ET,
MP-HET, MP-AT, MP-HAT
A, B 110 LB-IN
NEUTRAL AND EQPT GROUND BAR
LX081M NEUTRAL
LUG KIT
WIRETERMINALS TORQUE
2/0 - 4 AWG
SMALL TERMINALS 10 - 14 AWG
8 AWG
6 AWG
20 LB-IN
25 LB-IN
35 LB-IN
LARGE TERMINALS
10 - 14 AWG
8 AWG
1/0 - 6 AWG
35 LB-IN
40 LB-IN
45 LB-IN
2/0 - 6 AWG 50 LB-IN
MAIN LUG/MAIN BRKR TO BUS
CONNECTION (1/4-20 NUT)
45 LB-IN
1
23
2
24
EQPT GRD
EQPT GRD
NTL/E QPT GRD
NEUTRAL
LINE
BOND WHEN
REQ'D
EQPT GRD
EQPT GRD
NTL/E QPT GRD
NEUTRAL
B
LINE
A
BOND WHEN
REQ'D
BACK-FED BRKR
WHEN USED
1
23
2
24