Text version of the page

Overview

Guide to Steel City Knockouts,Pryouts,Ears,Brackets and Clamps

Knockouts and Pry outs

Knockouts

Steel City conduit KOs have standard trade size dimensions.KOs are uniform and true forattachment of cable or conduit connectors.Pryouts for cable entrance are slotted — a twist witha screwdriver removes them.KOs and Pryouts are precision stamped to permit easy removal,butremain sufficiently strong and sturdy when not removed.
3 8 7 1 � " � 3 8 " 1 � 32 " 1 � 2 " Conduit KO 3 � 4 " Conduit KO1" Conduit KO

Outlet Box Ears

Mounting ears support the box independent of the electrical system attachments.Switch boxes have a fixed ear for old work installations.Ears for plaster are set

Eccentric Knockouts Pryouts

Metallic Boxes and Covers 1 �
16 " forward of the box face in position for oldwork (modernization) except where specifically noted.

Tapped Holes for Grounding

21 � 32 " All Steel City boxes have a 10-32 tapped hole in the bottom of the box for attaching separate ground wire.
Combination 1 � 2 " & Cable Pryouts always in Pairs. 3 � 4 " Knockout

Brackets Clamps

“CV”Type (Outlet Boxes)

Mounts to flat side ofmetal studs or woodstuds.7
3 �
8 " long – 1" wide –

“S”or “B”Type “T”Type “SV”Type

3 �
8 " offset Mounts to face of stud.Usedon switch,handy or squareboxes.2" long – 2 Positions handy box against the face and side of stud.5 Mounts box to side of studwith positioning spikes.7
3 �
8 "long – 1" wide –
1 �
3 8 " wide
1 �
2 " long –
7 �
8 " wide �
8 " offset

“DV”Type “MS”Type (For Metal Studs) “L”Type “V”Type

Mounts box offset from stud 1
1 �
2 ".6 Mounts to any depth of metalstud,open or closed side.2 Used to mount octagon boxes.2 Mounts to flat side of stud.7
13 �
16 " long – 1" wide – 1
1 �
2 " offset
1 �
2 "long – 1
5 �
8 " long – 3
5 �
8 " wide –
1 �
4 " offset
3 �
8 " long – 1" wide –
3 �
8 " offset
11 �
16 " wide –
3 �
8 " offsetFar side support to 4" only

For Non-Metallic Sheathed Cable and Non-Metallic Tubing (Loom)

UNDERWRITERS LABORATORIES INC.and CANADIAN STANDARDS ASSOCIATION file numbers for individual itemsavailable upon request.“Products listed in this catalog are subject to alteration or discontinuation without prior notice.”

C-1 C-5 For Armored Cable Listing Information for Armored Cable Clamp — Type C-3

Armored Cable (BX) — SteelSizes 14-2 through 10-3 MCAP
™ — Aluminum*

C-8(Loom only)

Armored Cable (BX) — AluminumSizes 14-2 through 10-3 Flex Metal Conduit — Steel
1 �
8 "Trade Size MC Interlocked (MCI) — Steel.449–.570 Diameter Flex Metal Conduit — Aluminum
3 �
8 "Trade Size MC Interlocked (MCI) — Aluminum.476–.606 DiameterMC Corrugated (MCC) — Aluminum.375–.515 Diameter C-3 Clamp Acceptable for Grounding* MCAP

C-3

™ is a trademark of Southwire Company

C-10

A-3 A-3