Standard Terminology Relating to Uninsulated Metallic Electrical Conductors

SCOPE
1.1 This terminology standard defines abbreviations and terms specific to uninsulated electrical conductors. For terms relating to superconductors, see Definitions B713.

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Status
Historical
Publication Date
28-Feb-2005
Technical Committee
Current Stage
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ASTM B354-05 - Standard Terminology Relating to Uninsulated Metallic Electrical Conductors
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B354 − 05
StandardTerminology Relating to
1
Uninsulated Metallic Electrical Conductors
This standard is issued under the fixed designation B354; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
These terminologies relate only to interpretations as applied to uninsulated metallic electrical
conductorsinspecificationsunderthejurisdictionofASTMCommitteeB01onElectricalConductors,
and do not necessarily correspond to the definitions used in other fields.
1. Scope MA—zinc-5% aluminum-mischmetal alloy coated steel
wire, coating class A.
1.1 This terminology standard defines abbreviations and
MB—zinc-5% aluminum-mischmetal alloy coated steel
terms specific to uninsulated electrical conductors. For terms
wire, coating class B.
relating to superconductors, see Terminology B713.
MC—zinc-5% aluminum-mischmetal alloy coated steel
2. Referenced Documents
wire, coating class C.
2
MS —zinc-5% aluminum-mischmetal alloy coated high
2.1 ASTM Standards:
strength steel wire.
B193Test Method for Resistivity of Electrical Conductor
SD—self dampening construction.
Materials
B713TerminologyRelatingtoSuperconductors(Withdrawn
SIW—single input wire construction.
3
2001)
TW—trapezoidal shaped wire.
Zn-5Al-MM—zinc-5% aluminum-mischmetal alloy coat-
3. Abbreviations
ing.
AAAC—all aluminum alloy conductor
AAC—aluminum conductor.
4. Terminology
AACSR—aluminum alloy conductor, steel reinforced.
4.1 Definitions:
ACAR—aluminum conductor, aluminum alloy reinforced.
aeolian vibration—resonant vibration of a conductor caused
ACSR—aluminum conductor, steel reinforced.
by the alternate shedding of wind-induced vortices from
AW—aluminum clad steel wire.
opposite sides of the conductor. (Frequency is usually less
AZ—aluminum coated (aluminized) steel wire.
than 200 Hz and amplitude rarely exceeds one conductor
CCA—copper-clad aluminum
diameter.)
CCS—copper-clad steel
COMP—compact construction.
annealed wire—see soft wire.
GA—zinc coated (galvanized) steel wire, coating class A.
area density—mass per unit area.
GB—zinc coated (galvanized) steel wire, coating class B.
GC—zinc coated (galvanized) steel wire, coating class C.
bare conductor—a conductor having no nonmetallic cover-
HS—zinc coated (galvanized) high strength steel wire.
ing.
brazing—the joining of ends of two wires, rods, or groups of
1
This terminology is under the jurisdiction of ASTM Committee B01 on
wires with a nonferrous filler metal at temperatures above
Electrical Conductors and is the direct responsibility of Subcommittee B01.01 on
800°F [427°C].
Editorial and Records.
Current edition approved March 1, 2005. Published March 2005. Originally
breaking strength—the maximum load that a conductor
approved in 1960. Last previous edition approved in 1998 as B354–98. DOI:
10.1520/B0354-05.
attains when tested in tension to rupture.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
bunch-stranded conductor—a conductor composed of wires
Standards volume information, refer to the standard’s Document Summary page on
twisted together with a given length and direction of lay in
the ASTM website.
3
such manner that the respective wires at successive cross
The last approved version of this historical standard is referenced on
www.astm.org. sections along the length of the conductor do not necessarily
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1

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B354 − 05
form a symmetrical geometric pattern, nor necessarily oc- rope-lay conductor—conductor constructed of a bunch-
cupy the same positions relative to each other. stranded or a concentric-stranded member or members, as a
central core, around which are laid one or more helical layers
circular mil (cmil)—a unit of area equal to the area of a circle
of such members.
one mil (0.001 in., 0.0254 mm) in diameter. The area of a
unidirectional conductor—conductorconstructedwithacen-
circle in circular mils is equal to the square of the diameter
2
tral core surrounded by more than one layer of helically laid
in mils [area(cmils) = diameter(mils) ], 1 cmil = 7.854 ×
−7 2 −10 2
wires, all layers having a common direction of lay, with
10 in. [5.067 × 10 m ].
increase in length of lay for each successive layer.
clad wire—wire comprised of a given metal covered with a
unilay conductor—conductor constructed with a central core
relatively thick application of a different metal.The bonding
surrounded by more than one
...

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