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Installation
AFTER SWITCHGEAR IS LEVELED
AND PERMANENTLY WELDED OR
BOLTED IN PLACE, APPLY
ASPHALT OR EPOXY GROUT
BETWEEN THE FOUNDATION
AND THE CUBICLE FLOOR.
SLOPE THE GROUT SO THE
BREAKER CAN BE EASILY
WHEELED IN AND OUT OF
THE CUBICLE
CABLE AREAS-MAXIMUM AREA FOR CABLES FROM:
AREA A- 26.0"X 11.0" DEEP
26.0"X 11.0" DEEP
(666 X 279mm)
FOR CABLES FROM EITHER:
TOP BREAKER OUT TOP
(WHEN BOTTOM BREAKER
ALSO EXITS TOP);
OR
BOTTOM BREAKER OUT
BOTTOM (WHEN TOP
BREAKER ALSO EXITS
BOTTOM).
AREA B- 15.75"X 8.75" DEEP
15.75"X 8.75" DEEP
(400 X 222mm)
FOR CABLES FROM EITHER:
TOP BREAKER OUT TOP
(WHEN BOTTOM BREAKER
ALSO EXITS TOP);
OR
BOTTOM BREAKER OUT
BOTTOM (WHEN TOP
BREAKER ALSO EXITS
BOTTOM).
AREA C- 26.0"X 21.0" DEEP
26.0"X 21.0" DEEP
(660 X 533mm)
FOR CABLES FROM EITHER:
NEAREST BREAKER OUT TOP
(WHEN ONLY THIS BREAKER
EXITS TOP);
OR
NEAREST BREAKER OUT
BOTTOM (WHEN ONLY THIS
BREAKER EXITS BOTTOM).
Figure 7. Anchoring Indoor GM Switchgear
10
Courtesy of NationalSwitchgear.com
SILL CANNOT PROJECT MORE THAN
3.75 FROM FRONT OF UNIT TO
ALLOW ENTRANCE OF SECONDARY
BREAKER
WIRING.
DRAWOUT
SIDE
0.06 SPACE BETWEEN SWGR & FLOOR
FLOOR
LINE
WHEN SILL CHANNELS ARE USED,
CUSTOMER'S FLOOR MUST NOT
PROJECT ABOVE MOUNTING
SURFACE OF CHANNELS AT ANY
POINT WITHIN THE FLOOR AREA
COVERED BY THE SWITCHGEAR
CUBICLES.
14.25
41.62
94.0
47.75
ALLOW 30.0"
CLEARANCE FOR
DOOR SWING ON
LEFT HAND END.
3.25
FLOOR MUST BE LEVEL 48.0"
IN FRONT OF SWITCHGEAR TO
ALLOW PROPER OPERATION OF
CIRCUIT BREAKER LIFT TRUCK.
(RECOMMENDED)
MINIMUM DRAWOUT SPACE
FOR CIRCUIT BREAKER AT
FLOOR LEVEL IS 50.0".
BOLT OR WELD
CUBICLE TO SILL
SILL CHANNELS AND ANCHOR BOLTS
FURNISHED BY CUSTOMER UNLESS
COVERED BY CONTRACT.
CONDUIT HEIGHT NOT TO
EXCEED 1.0" ABOVE FLOOR LINE.
(AREA A)
36.0
MAXIMUM AVAILABLE SPACE FOR
CUSTOMER PRIMARY CONNECTION
15.76
10.12
FROM LOWER BREAKER THRU TOP OR
UPPER BREAKER THROUGH BOTTOM
4.25
8.75
(AREA C)
11.0
(AREA B)
MAXIMUM AVAILABLE SPACE FOR
CUSTOMER PRIMARY CONNECTION
26.0
5.0
FROM LOWER BREAKER THRU BOTTOM OR
32.0
UPPER BREAKER THROUGH TOP
.12
.12
(6) .625 DIA HOLES FOR
.50 DIA ANCHOR BOLTS
31.0
2.38
2.38
PREFERRED LOCATION FOR CUSTOMER
7.0
SECONDARY LEADS BELOW OR ABOVE
3.75
LEFT HAND SIDE (OPTIONAL)
ALLOW 6.0"
FOR BREAKER
WITHDRAWAL
FLOOR PLAN
ALLOW 76"
FOR BREAKER
WITHDRAWAL
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