CP
Technical Data –
Switch & Outlet Boxes
Article 314 of the National Electrical Code® (NEC®) covers
the installation and use of boxes. The article includes table
references that guide the electrician in the selection of the
proper size box necessary to safely accommodate electrical
service requirements. The box capacity table is reproduced in
part from NEC as a quick reference and guide. The NEC
Commercial
Products
should be consulted for complete details.
Cooper Crouse-Hinds products are produced in
ɀCP
accordance with the requirements of UL-514-A, UL-514-B,
UL-514-C and are classified for fire resistance according to the
standard, Fire Tests of Building Construction and Materials,
ANSI/UL 263, ASTM E 119 and NFPA 251. This listing is based
on products when used in a fire rated (2 HR) wall or ceiling.
Cooper Crouse-Hinds steel boxes are listed with U.L. File
#E23156 and Cooper Crouse-Hinds nonmetallic boxes are
listed with U.L. File #E102328 and U.L. (2 HR. fire rated) File
#R9933.
Cooper Crouse-Hinds switch and outlet boxes comply with
the requirements of NEMA standard OS-1, NFPA 70-370 and
Federal Spec. #W-J-800E.
Under File #E23156, Cooper Crouse-Hinds concentric and
‘‘Moon’’ KO style boxes, the following is stated ‘‘Suitable for
bonding without any additional bonding means around
concentric (or Eccentric) knockouts where used in circuits
above or below 250V.’’
Cooper Crouse-Hinds NAED/DCI/UPC number is 786189-10
plus the 3-digit product number. On the outlet box 4-digit
product number, the NAED/DCI/UPC number is 786189-0 plus
the 4-digit product number and for the 5-digit product number,
the NAED/DCI/UPC number is 786189 plus the 5-digit number.
Wall thickness on all Steel boxes is 0.0625⍯
Table 314.16 (A) Metal Boxes
Box Dimension, Inches Cu. In.
Trade Size or Type Cap. No.18 No.16 No.14 No.12 No.10 No.8 No.6
4x11⁄4Round or Octagonal 12.5 8765542
1
4x1
⁄2Round or Octagonal 15.5 10876653
1
4x2
⁄8Round or Octagonal 21.5 14 12 10 9 8 7 4
1
4x1
⁄4Square 18.0 12 1098763
1
4x1
⁄2Square 21.0 14 12 10 9 8 7 4
1
4x2
⁄8Square 30.3 20 17 15 13 12 10 6
11
4
⁄16x11⁄4Square 25.5 17 14 12 11 10 8 5
11
4
⁄16x21⁄2Square 29.5 19 16 14 13 11 9 5
11
4
⁄16x21⁄8Square 42.0 28 24 21 18 16 14 8
1
3x2x1
⁄2Device 7.5 5433321
3x2x2 Device 10.0 6554432
1
3x2x2
⁄4Device 10.5 7654432
1
3x2x2
⁄2Device 12.5 8765542
3
3x2x2
⁄4Device 14.0 9876542
1
3x2x3
⁄2Device 18.0 12 1098763
1
4x2
⁄8x11⁄2Device 10.3 6554432
1
4x2
⁄8x17⁄8Device 13.0 8765542
1
4x2
⁄8x21⁄8Device 14.5 9876542
3
3
⁄4x2x21⁄2Masonry
Box/Gang 14.0 9876542
3
3
⁄4x2x31⁄2Masonry
Box/Gang 21.0 14 12 10 9 8 7 4
FS-Minimum Internal Depth
3
1
⁄4Single Cover Gang 13.5 9766542
FD-Minimum Internal Depth
3
2
⁄8Single Cover Gang 18.0 12 1098763
FS-Minimum Internal Depth
3
1
⁄4Single Cover Gang 18.0 12 1098763
FD-Minimum Internal Depth
3
2
⁄8Multiple Cover Gang 24.0 16 13 12 10 9 8 4
Size of Free Space Within Box
Conductor for Each Conductor
Table 314.16 (B) Volume Required per Conductor
Min. Maximum Number of Conductors
No. 18 ..........................................1.5 cubic inches
No. 16 .........................................1.75 cubic inches
No. 14............................................2 cubic inches
No. 12.........................................2.25 cubic inches
No. 10 ..........................................2.5 cubic inches
No. 8 ...........................................3 cubic inches
No. 6 ...........................................5 cubic inches
3
For SI units: one cubic inch = 16.4 cm
Reprinted with permission from NFPA 70-2005, the National Electrical Code®,
Copyright® 2005 National Fire Protection Association, Quincy MA 02269. This
reprinted material is not the complete and official position of the National Fire
Protection Asociation, on the referenced subject which is represented only by
the standard in its entirety.
National Electrical Code® and NEC® are registered trademarks of the National
Fire Protection Association, Inc., Quincy, MA 02269.
.
COOPER CROUSE-HINDS SWITCH BOX
DETAILS
Knockouts and Pry-outs
Cooper Crouse-Hinds conduit KOs have standard trade size dimensions. KOs
are uniform and true for attachment of cable or conduit connectors. Pry-outs for
cable entrance are slotted – a twist with screwdriver removes them. KOs and
Pry-outs are precision stamped to permit easy removal, but remain sufficiently
strong and sturdy when not removed.
1
⁄2⍯ Conduit KO
198
3
⁄4⍯ Conduit KO 1⍯ Conduit KO
Cable Pry-outs always in pairs.
US: 1-866-764-5454 CAN: 1-800-265-0502 Copyright©2006 Cooper Crouse-Hinds
Cooper Crouse-Hinds 4⍯ sq. drawn boxes feature a 1⁄2⍯ and 3⁄4⍯ ‘‘inverted’’
concentric KO – easily removed. Our 4⍯ sq. welded feature our
which also features easy removability of both the
KOs are suitable for bonding without bonding jumpers around concentric (or
eccentric) knockouts where used in circuits above or below 250V.
Concentric Eccentric
1
⁄2⍯ and 3⁄4⍯ KO
1
⁄2⍯ and 3⁄4⍯ KOs. NOTE: These
1
⁄2⍯ and 3⁄4⍯ KO
1
⁄2⍯ eccentric KO
Mounting Information
CP
BRACKETS USED ON COOPER CROUSE-HINDS BOXES
‘‘F’’ BRACKET
Mounts on face of stud. See
catalog number for set back.
For wood studs.
‘‘VS’’ BRACKET
Plain flat mounted bracket for
use on wood or metal studs.
No set back.
‘‘D’’ BRACKET
Side mount bracket with
set up hook & guide tabs
for automatic positioning.
Standard bracket set back is
For wood and metal studs.
‘‘VMS’’ BRACKET
Side bracket for use with
wood or metal studs.
Provides set up tabs
to position on face
of stud.
metal studs. Standard bracket set
5
⁄8⍯.
‘‘S’’ BRACKET
Side mount brackets with
set up hook for wood or
back is
‘‘VP’’ BRACKET
Side bracket with set up hooks
for wood studs.
ɀCP
Steel Boxes
‘‘C’’ BRACKET
Ceiling box bracket
for wood studs.
5
⁄8⍯.
‘‘SSB’’ BRACKET
Positions box on either side
of a steel stud.
CLAMPS USED ON COOPER CROUSE-HINDS BOXES
Cat. No. TP900
MC-BX NM-1 NM-2 NM-4
FOR ARMORED & METAL CLAD (MCI) CABLE FOR NONMETALLIC CABLE
MOUNTING EARS
Cat. No. TP901 Cat. No. TP902
ONE SCREW EAR TWO SCREW EAR
Mounting ears are available on many of our switch boxes. They are set forward in
position. Two-screw ears are generally used on shallow boxes and one-screw ears on deep boxes.
1
⁄16⍯ the ‘‘old way’’
US: 1-866-764-5454 CAN: 1-800-265-0502 Copyright©2006 Cooper Crouse-Hinds
199
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