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80459-641-01E Model 6 Motor Control Centers
10/2012 Section 4—Installing the MCC
© 1999–2012 Schneider Electric All Rights Reserved 29
ENGLISH
Splicing With No P Gasketing
1. Turn off all power supplying this equipment before working on or inside
the equipment, and follow lockout/tagout procedures. Always use a
properly rated voltage sensing device to confirm the power is off.
2. If splicing to an existing MCC, remove the end plate and any gasketing
from the existing MCC.
3. Remove the white paper backing from the new gaskets (supplied by
Schneider Electric) to expose the adhesive. This adhesive temporarily
holds the gaskets in place while the sections are being positioned.
4. Apply P gaskets to the outside of the front and rear vertical corner
channels (see Figure 18 on page 28). The gaskets should not extend
above the top of the corner channels.
5. Apply flat gaskets to the outside of the top and bottom tie channels. The
gaskets should not extend above the top of the tie channels.
6. Applying thumb pressure, firmly press the gaskets in place from top to
bottom. Verify that the gaskets are flat along the entire length.
7. Join sections together following the appropriate steps in “Joining NEMA
Type 1 / NEMA Type 1 Gasketed / NEMA Type 12 Sections” on page 20.
NOTE: When new sections will be added to left side of existing line-up,
follow Steps 1, 2, and 7 only.
Splicing With P Gasketing
Determine the location of the existing P gasket before splicing. If the P
gasket is on the left (see Figure 18 on page 28), follow the instructions
“Splice to Existing Left”. If the P gasket is on the right (see Figure 18 on
page 28), follow the instructions “Splice to Existing Right”.
Splice to Existing Left
1. Turn off all power supplying this equipment before working on or inside
the equipment, and follow lockout/tagout procedures. Always use a
properly rated voltage sensing device to confirm the power is off.
2. Remove the end plate and all flat gaskets from the existing MCC. Leave
the P gasket on the existing front corner channel in place.
3. Remove the factory installed flat gasket from the front corner channel of
the new vertical section.
4. Join sections together following the appropriate steps in “Joining NEMA
Type 1 / NEMA Type 1 Gasketed / NEMA Type 12 Sections” on page 20.
Splice to Existing Right
1. Turn off all power supplying this equipment before working on or inside
the equipment, and follow lockout/tagout procedures. Always use a
properly rated voltage sensing device to confirm the power is off.
2. Remove the end plate and all flat gaskets from the existing MCC. The
P gasket on the existing front corner channel should be left in place.
3. Remove the white paper backing from the new gaskets (supplied by
Schneider Electric) to expose the adhesive. This adhesive temporarily
holds the gasket in place while the sections are being positioned.
4. Apply a P gasket to the outside of the rear vertical corner channel
(see Figure 18 on page 28). The gasket should not extend above the top
of the corner channel. Retain the extra P gasket for future use.
5. Apply flat gaskets to the outside of the top and bottom tie channels. The
gaskets should not extend above the top of the tie channels.
6. Applying thumb pressure, firmly press the gasket in place from top to
bottom. Ensure that the gasket is flat along the entire length.
7. Join sections together following the appropriate steps in “Joining NEMA
Type 1 / NEMA Type 1 Gasketed / NEMA Type 12 Sections” on page 20.