600V/1000V DC Combiner Installation and Operating Instructions – 36-String Disconnect Models
950-002305-000 Rev A
18
Chapter 3: Installation Procedure
Summary Steps for Wall Mounting a Steel
Enclosure
This section is an example of how to prepare and mount a steel combiner
enclosure on a wall. All work must be performed and verified in accordance with
local codes. The procedures for installing steel enclosures are the same
regardless of the enclosure size. The exact measurements of the different sizes of
enclosures and distances between mounting holes are listed in
Preinstallation
1. Verify that the hardware (5/16 inch bolts) to be used supports the weight of
the enclosure and is readily available in sufficient quantities to complete the
job.
2. Locate the mounting holes in each corner of the enclosure. Remove the
plastic plugs from each hole.
3. The wall where the enclosure will be mounted should have been marked off
and drilled. Appropriate mounting suspension hardware should have been
installed and secured. Holes matching the enclosure mounting pattern
should have also been drilled. Verify the location of all mounting hole
drilling.
Installation
1. Prepare the mounting hardware by stacking the washers and insulator
material on the bolts so that when the screw is mated to the mounting point
on the wall, the enclosure is brought back to its NEMA rating. Failure to do so
may allow the elements to enter the box and will void the warranty.
2. With the enclosure door closed, raise the enclosure to the point where it will
be mounted. Support the enclosure so it can be aligned to the mounting
holes in the support structure.
3. Open the enclosure door and position the enclosure so the mounting holes
are aligned with the holes that were predrilled in the wall. Insert a mounting
bolt into the mounting hole in the upper left corner. Screw the mounting
bolt into the hole until the head is 1/4 inch from being secure. Repeat for the
top right, bottom left, and bottom right mounting holes.
4. Starting with the top left mounting screw, tighten the screw until it is secure.
Moving clockwise, secure the remainder of the screws until the enclosure is
secured to the wall with no movement.
5. The enclosure mounting is complete. Notify the inspection team to verify the
mounting.
