ASTM F2715-08

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Designation: F 2715 – 08
Standard Specification for
Temporary Protective Equipotential Bond Mat To Be Used
on De-Energized Equipment
This standard is issued under the fixed designation F 2715; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 bonding, n—the mechanical interconnection of con-
ductive parts to maintain a common electrical potential.
1.1 This specification covers the manufacture and testing of
3.1.2 Equipotential Grounding System, n—temporary
the temporary protective equipotential bond mat used on or
grounding system placed in such locations and arranged in
around de-energized electrical equipment.
such a manner as to minimize the likelihood of workers being
1.2 It is common practice for users of protective equipment
exposed to hazardous differences in electrical potential.
to prepare complete instructions and regulations to govern in
3.1.3 carrier, n—the main body of the equipotential bond
detail the correct use and maintenance of such equipment.
mat on which the flat braid conductor is sewn.
1.3 The use and maintenance of this equipment is beyond
the scope of this specification.
4. Classification
1.4 It is recognized that the use of temporary protective
4.1 Equipotential bond mats covered under this specifica-
equipotential bond mats requires additional equipment for
tion shall be designated as Type I or Type II; Class A or Class
installation and use, typically temporary connecting jumper
B; Style 1 or Style 2; Grid Conductor 1 to 24 and Carrier
assemblies.
Material I or II.
2. Referenced Documents 4.1.1 Type I, capable of being cascaded (joined together).
4.1.2 Type II, without capability of being cascaded.
2.1 ASTM Standards:
4.1.3 Class A, with continuity cable.
B33 Specification for Tinned Soft or Annealed Copper
4.1.4 Class B, without continuity cable.
Wire for Electrical Purposes
4.1.5 Style 1, exposed conductor termination.
D 2261 Test Method for Tearing Strength of Fabrics by the
4.1.6 Style 2, jacketed conductor termination.
Tongue (Single Rip) Procedure (Constant-Rate-of-
4.1.7 Grid Conductor, 1 to 24, in accordance with the
Extension Tensile Testing Machine)
normal flat width, or equivalent, of the flat braid conductors
2.2 Other Standards:
combination that makes up the grid conductor and perimeter
Fed Std 191/5100 Strength and Elongation, Breaking of
conductor of the carrier, as shown in Table 1.
Woven Cloth; Grab Method
4.1.8 Carrier material I, slip resistant.
Fed Std 191/5874 Temperature, Low; Effect on Coated
4.1.9 Carrier material II, without slip resistance.
Cloth
Fed Std MVSS302 Flammability of Interior Materials
5. Ordering Information
A-A-59551 Wire, Electrical, Copper Un-insulated
5.1 Orders for equipotential bond mats under this specifica-
3. Terminology tion shall include the ASTM designation and the following
information:
3.1 Definitions:
5.1.1 Quantity,
5.1.2 Type,
5.1.3 Style,
This specification is under the jurisdiction of ASTM Committee F18 on
5.1.4 Class,
Electrical Protective Equipment for Workers and is the direct responsibility of
5.1.5 Grid Conductor,
Subcommittee F18.45 on Mechanical Apparatus.
Current edition approved Oct. 1, 2008. Published November 2008.
5.1.6 Carrier Material,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.7 Size, specified in length and width dimensions, noting
contactASTM Customer Service at service@astm.org. ForAnnual Book of ASTM
any specific configuration requirements; rectangular, L shape,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. rectangular shape with access hole in middle, etc.
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F2715–08
TABLE 1 Bond Mat Conductor Size
7.4 Carrier Fire Resistance—The flame resistance of the
Grid carrier shall be performed in accordance with Fed Std
Grid, in. Perimeter, in. Class
Pattern
MVSS302 and shall be self extinguishing.
1 1
1 ⁄4 ⁄2 B
1 1
2 ⁄4 ⁄2 B
8. Dimensions and Permissible Variations
1 3
3 ⁄4 ⁄4 B
1 1 8.1 Equipotential bond mat size is the combination of grid
4 ⁄2 ⁄2 B
1 3
5 ⁄2 ⁄4 B
spacing and perimeter dimensional configurations.
3 3
6 ⁄4 ⁄4 B
8.2 The length and width of grid spacing shall be 200 by
1 1
7 ⁄4 ⁄4 A
1 1
200 mm (8 by 8 in.), with a permissible variation of 625 mm
8 ⁄4 ⁄2 A
1 3
9 ⁄4 ⁄4 A
(61 in).
1 1
10 ⁄2 ⁄2 A
8.3 Threadstitchspacingshallbe6stitchesormoreper25.4
1 3
11 ⁄2 ⁄4 A
3 3 mm (6 stitches or more per 1 in).
12 ⁄4 ⁄4 A
1 1
13 ⁄4 ⁄4 A
8.4 Aminimum adequate area must be provided for footing
1 1
14 ⁄4 ⁄2 A 2 2
surface of 0.37 m (4 ft ) and a minimum of 0.6 m linear (2 ft)
1 3
15 ⁄4 ⁄4 A
1 1 in any direction, with a permissible variation of 625 mm ( 61
16 ⁄2 ⁄2 A
1 3
17 ⁄2 ⁄4 A
in).
3 3
18 ⁄4 ⁄4 A
1 1
19 ⁄4 ⁄4 A
9. Workmanship and Finish
1 1
20 ⁄4 ⁄2 A
1 3
21 ⁄4 ⁄4 A
9.1 Components shall be free of structural defects that affect
1 1
22 ⁄2 ⁄2 A
handling or performance, or both.
1 3
23 ⁄2 ⁄4 A
3 3
9.2 Cosmetic and other surface irregularities which do not
24 ⁄4 ⁄4 A
affect strength, performance, or handling, or combination
thereof, are not cause for rejection.
5.2 The listing of types, styles, classes, grid conductors,
10. Sampling
carrier material and size is not intended to mean that all shall
necessarily be available from the manufacturers; it signifies 10.1 A product model represents a manufacturer’s design
specification standard according to which the production lot is
only that, if made they shall conform to the details of this
specification. manufactured.
10.2 Aproduction lot shall consist of all equipotential bond
6. Manufacture and Marking
mats of one product model produced at one time.
6.1 Eachequipotentialbondmatshallbemarkedclearlyand 10.3 A test sample consists of two specimens, selected at
permanently with the name of the manufacturer or supplier, random, for each different test specified.When a failure occurs
ASTM F 2715, serial number, type, style and class. in one specimen from the first sample, a sec
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