77-3X20FT 3M, 77-3X20FT Datasheet - Page 2

• Manufacturer Part Number: 77-3X20FT
• Description: TAPE FIRE AND ARC PROOFING 3"
• Manufacturer: 3M
• Series: Scotch® 77r

Specifications of 77-3X20FT

• Tape Type: Fire Retardant
• Thickness: 0.030" (30 mils, 0.762mm)
• Width: 3.00" (76.20mm) 1/4'
• Length: 20' (6.1m) 6.7 yds
• Color: Black
• Usage: Electrical Cable Protection
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Temperature Range: -
• Adhesive: -
• Backing, Carrier: -
• Thickness - Adhesive: -
• Thickness - Backing, Carrier, Liner: -
• Other names: 00054007420064; 05400742006; VE000029706

Scotch
Product
Specifications
Engineering and
Architectural
Specification
Installation Technique
Shelf Life & Storage
Availability
Important Notice
Warranty; Limited
Remedy; Limited
Liability
3M and Scotch are trademarks of 3M Company.
3
Electrical Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
800 245 3573
FAX: [phone]
www.3M.com/electrical
Electrical
®
Fire-Retardant Electric Arc Proofing Tape 77 Series
Scotch
unsupported intumescent elastomer. The tape shall be 0.030 inches thick and be capable
of over 100% elongation. The tape shall be non-corrosive to metallic cable sheaths and
compatible with synthetic cable jackets (i.e. semiconducting URD type, polyethylene,
PVC, etc.). It shall be self-extinguishing and shall not support combustion. The tape shall
not deteriorate when subjected to water, salt water, gases, and sewage. The wrapped
tape shall be secured by hand, consisting of two layers (the second wrapped directly over
the first) of glass cloth electrical tape.
All high-energy cable, important communication and control cables in manholes, vaults, on
open cable trays or other exposed locations where threat of communication fault can
occur, shall be are proofed with one half-lapped layer of Scotch
Tape 77or Tape 77W. All tape shall be secured with Scotch
69.
Wrap Scotch
be stretched to obtain a snug, wrinkle-free wrap which conforms to the cable. Overlap the
last 6 inches of protected cable when starting a new roll of tape.
Since Scotch
held in place after wrapping with bands of Scotch
most effective and economical way to hold Scotch
77W in place is by banding (2 complete wraps) the first and last applied wrap.
This product has a 5-year shelf life from date of manufacture when stored in a humidity
controlled storage (10° C/50° F to 27° C/80° F and <75%
Please contact your local distributor; available from 3M.com/electrical [Where to Buy] or
call 1-800-676-8381.
Property (Test Method)
(ASTM D1000 unless noted)
Dielectric Breakdown
Thermal Conductivity (23° C)
ASTM C-518
Electric Arc Resistance
(Consolidated Edison Co.) Test EO-5343-14
®
Electric Arc Proofing Tape 77 Series shall consist of a flexible conformable
®
®
Electric Arc Proofing Tape 77 or Tape 77W in half-lapped layers. This may
Electric Arc Proofing Tape 77 Series is not adhesive coated, it must be
Please recycle
© 3M 2009 All rights reserved
78-8124-5426-8 C
Page 2 of 2
®
®
Glass Cloth Electrical Tape 69. The
Electric Arc Proofing Tape 77 or Tape
Typical Value
US units (metric)
500 V/mil (19.7 kv/mm)
0.15 BTU-ft (0.25 W/mk) ft
Pass
relative humidity).
®
Glass Cloth Electrical Tape
®
Electric Arc Proofing
2
-hr-° F