How does a High Amp QO and Homeline Convertible Main lug Load Center get converted to a Main Breaker Load Center using a QOM2-VH Main Breaker Kit?

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Video: How does a high amp, QO or Homeline, convertible main lug load center get converted to a main breaker load center using a QOM2-VH main breaker kit?

Issue:
How does a high amp, QO or Homeline, convertible main lug load center get converted to a main breaker load center using a QOM2-VH main breaker kit?

Product Line:
Homeline load centers

Resolution:
The QOM2-VH Main Breaker kit is ONLY used for the High amp, 225Amp Max., Homeline Series S_ _ and QO Series G01, G02, S_ _ and Canadian Series T4 load centers.
DO NOT EXCEED THE MAXIMUM AMPERE RATING OF THE LOAD CENTER.
NOTE: The older Main Lug Homeline Series, 1, 2 or 3 were NOT convertible load centers and did NOT use the QOM2 Frame size Main Breaker, so they are NOT convertible.

The QO and Homeline Convertible Main lug load centers that uses a QOM2-VH Frame size, can be converted to a Main Breaker load center for any of the Amperages that are available with the QOM2 Main Breaker Frame. The amperages include a 100, 125, 150, 175, 200 and 225Amps. (See the current digest(printed or on-line) for exact MB Catalog numbers).
NEVER EXCEED THE MAXIMUM MAINS RATING OF THE LOAD CENTER SHOWN ON THE LABELING INSIDE THE LOAD CENTER BOX.

The QOM2-VH Main Breaker kit will accept (1) #4 - 300 kcmil Al/Cu wire, BUT to find out the maximum wire size permitted in the particular load center per UL/CSA wire bending space, see either the wiring diagram on the load center enclosure or the tables in the current digest under the heading 'Main wire size'.

Please verify all kit contents with the instructions that come in the Main Breaker kit and ONLY use the Main Breaker kit with the Load Centers Series numbers shown above and in the instructions.

Please make sure to read the instructions and all the below Safety Information that is located in the instructions BEFORE working on any electrical equipment.
A pdf copy of the complete instructions is attached below.

NOTE 1: Another option would be to back feed a 2pole branch breaker as the main, of the amperage required for the application. BUT this will require the appropriate Retaining Kit for the catalog number of the load center for the back feed option. The back feed option will use 2 pole spaces of the load center spaces.
NOTE 2: In the appropriately rated QO and Homeline load centers, if a 150 - 200amp branch breaker is used as a back fed main, the breaker requires 4-Pole spaces on the interior and requires the use of the PK5RK(for QO) or HOM5RK (for HOMELINE) Retaining kit.

Make sure to turn OFF ALL Power supplying the equipment and verify the power is OFF using a properly rated voltage sensing device, BEFORE working on or with electrical equipment.
Once all Safety steps are followed, begin the kit installation by following the instructions.
1) Remove Cover from load center.
MAIN LUG REMOVAL
NOTE: Refer to Steps 1-4 on page 1 of instructions and illustration on page two of the instructions.
2) If Main wires are installed, loosen each wire binding screw on the two main lugs (B) in figure and remove the main wires
3) Loosen, remove and retain two mounting nuts (A) in figure
4) Remove and discard the main lugs.
5) Remove and discard the interior mounting screw (C) in figure.

MAIN CIRCUIT BREAKER INSTALLATION
NOTE: Refer to Figure illustration on page 2 of the instructions and Please make sure the main circuit breaker ampere rating is appropriate for the load center rating.
1) Place the main circuit breaker retaining tabs (E) under the retaining flange (F) and Rotate the main circuit breaker into position. See Figure in instructions
2) Replace the two previously removed mounting nuts (A) in figure illustration and torque to 50-75 lb-in (6-8 N-m).
3) Install the interior/MB mounting screw (G) as shown in illustration and torque to 30 lb-in( 3 N-m).
3) Insert the main wires into the main breaker (H) lugs. Torque the lug wire binding screws to the specifications shown on the main breaker label or wiring diagram located on the load center box
4) For load centers used as Service Equipment:
* apply the Service Disconnect label(provided) to the load center cover near the main breaker handle.
* install the appropriate bonding screw(provided) in hole (J) in figure illustration of noted load center
* install Service Barrier Kit(included) and follow instructions provided for the Service Barrier Kit.
5) For load centers NOT used as Service Equipment(a sub panel)
* apply Main label (provided) to the load center cover near the main breaker handle.
* DISCARD bonding screw
6) Complete installation following instructions in load center

NOTE: PLEASE MAKE SURE FOLLOW ALL THE SAFETY INFORMATION SHOWN BELOW AND NEVER WORK ON ENERGIZED EQUIPMENT.