255 THOMAS & BETTS, 255 Datasheet

255

Manufacturer Part Number

255

Description

Electrical

Manufacturer

THOMAS & BETTS

Datasheet

1.255.pdf (7 pages)

Specifications of 255

Leaded Process Compatible

Peak Reflow Compatible (260 C)

Outer Diameter

31.75mm

Length

38.888mm

Body Material

Malleable Iron

External Diameter

31.75mm

Accessory Type

Squeeze Connector

Rohs Compliant

For Use With

Armored Cable And Flexible Metal Conduit

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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Armored Cable (Type AC) — Ref. NEC

Article 320

National Electrical Code defines type AC armored

cable as, “A fabricated assembly of insulated

conductors in a flexible metallic enclosure.”

ACT

ACH

ACHH

ACU

“L”

Metal Clad Cable, Armored Cable and Flexible Metal Conduit

NOTE

The materials herein, whether relating to the National Electrical Code, the Underwriters Laboratories, Inc. listing, to industry practice or otherwise,

are not intended to provide all relevant information required for use and installation of our products. Refer to applicable codes, instructions and

industry specifications prior to installation or use.

Indicates an armored cable

employing conductors having

thermoplastic (Type T) insulation.

Indicates an armored cable

employing conductors having rubber

insulation of code grade.

Indicates an armored cable

employing conductors having rubber

insulation of the heat resistant

(75° C) grade.

Indicates an armored cable

employing conductors having rubber

insulation of the heat resistant

(90° C) grade.

Indicates an armored cable

employing conductors having rubber

insulation of latex grade.

Used as a suffix, it indicates that a

lead covering has been applied over

the conductor assembly.

Metal Clad Cable, Armored Cable and Flexible Metal

United States

Tel: 901.252.8000

Fax: 901.252.1354

800.816.7809

aluminum or copperclad aluminum conductors

with the following sizes and are rated for

600 volts or less:

bonding strip of copper or aluminum in intimate

contact with the armor for its entire length.

Armored cable can be used for both exposed

or concealed locations. With lead-covered

conductors (Type ACL), the cable can be

embedded in masonry or concrete and can be

used in damp locations or where exposed to oil.

where it will be subjected to physical damage or

corrosive fumes. Armored cable cannot be used

for direct burial in earth.

not permitted to be used in hoists or elevators,

storage battery rooms, any hazardous locations,

in commercial garages and in theaters or similar

locations.

with straps or staples without damaging

conductors and also limit the minimum bend

radius to 5 times the diameter of type AC cable.

Certain precautions are prescribed in code where

cable is installed through joist rafters or similar

wood members.

All armored cables may employ copper or

No. 14 AWG to No. 1 AWG Copper

No. 12 AWG to No. 1 AWG Aluminum

or Copperclad Aluminum

Type AC cables except ACL carry an internal

Armored cable is not permitted in locations

With minor exceptions, armored cable is also

Codes require that cable shall be supported

Canada

Tel: 450.347.5318

Fax: 450.347.1976

Technical Services

Tel: 888.862.3289

Conduit Fittings

is terminated, a fitting is required to protect

conductors from abrasion. In addition,

a bushing is required between the conductors

and armor. Design of fitting has to be such that

the insulating bushing is visible for inspection.

Bushing is not required with lead-covered cables

when properly installed.

permission from NFPA 70–2005, National

Electrical Code

Fire Protection Association, Boston, MA.

and complete information:

1. NEC Article 320…Armored Cable (Type AC

2. UL 4, ANSI C33.9…Safety Standards for

3. UL 514B, Safety Standards for Outlet Boxes

4. A-A-50552…Federal Specification. Fittings

5. NEMA FB-1…Standards Publication. Fittings

6. CEC Section 12-700…Wiring Methods

7. CSA C22.2 No. 51…Safety Standards for

8. CSA C22.2 No. 18…Safety Standards for

According to NEC 320 where armored cable

Portions of this section reprinted by

Please refer to the following for further details

Cable)

Armored Cable

and Fittings

for Cable, Power, Electrical and Conduit,

Metal, Flexible

& Supports for Conduit and Cable Assemblies

(Armored Cable)

Armored Cables

Outlet Boxes, Conduit Boxes and Fittings

www.tnb.com

A-149

255 Summary of contents

Page 1

Metal Clad Cable, Armored Cable and Flexible Metal Metal Clad Cable, Armored Cable and Flexible Metal Conduit Armored Cable (Type AC) — Ref. NEC Article 320 National Electrical Code defines type AC armored cable as, “A fabricated assembly of insulated ...

Page 2

Metal Clad Cable, Armored Cable and Flexible Metal Conduit Fittings Metal Clad Cable, Armored Cable and Flexible Metal Conduit — Flexible Metal Conduit — Ref. NEC Article 348 Flexible metal conduit can be used for exposed or concealed work in ...

Page 3

Metal Clad Cable, Armored Cable and Flexible Metal Armored Cable & Flexible Metal Conduit Connectors Application • Features • 3110 Series • • • • • • • RANGE 3110 Series Straight Connectors 3130 Series 90° Connectors United States Tel: ...

Page 4

Metal Clad Cable, Armored Cable and Flexible Metal Conduit Fittings Designed to resist vibration and strain! TITE-BITE ® Connectors — Nylon-Insulated • Steel or malleable iron construction • Tough, insulated lining and Tite-Bite design make these connectors a “must” when ...

Page 5

Metal Clad Cable, Armored Cable and Flexible Metal Steel or malleable iron. Available with or without insulated throat, this • Tite-Bite Steel or malleable iron construction ® connector line is by far the easiest and best to install when making ...

Page 6

... A-154 www.tnb.com CAT. CABLE OPENING NO. MAX. MIN. 252*** .531 .437 253TB** .585 .455 254-TB .938 .812 255 1.094 .938 256 1.375 1.250 257*** 1.656 1.500 258*** 1.875 1.688 259*** 2.500 2.313 249*** 3.062 2.812 277*** 3 ...

Page 7

Metal Clad Cable, Armored Cable and Flexible Metal Armor-gripping saddle stays open by itself when cable is being inserted! Two-Screw Connectors • Formed steel body CAT. CABLE OPENING • Carefully round NO. MAX. bushing 3301-TB** .656 3312-TB .937 ** UL ...