ASTM D1050-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 1050 – 05
Standard Specification for
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Rubber Insulating Line Hose
This standard is issued under the fixed designation D 1050; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D624 Test Method for Tear Strength of Conventional
Vulcanized Rubber and Thermoplastic Elastomers
1.1 This specification covers acceptance testing of rubber
D2865 Practice for Calibration of Standards and Equip-
insulating line hose for use as a portable protective device for
ment for Electrical Insulating Materials Testing
protection of workers from accidental contact with live elec-
F819 Terminology Relating to Electrical Protective Equip-
trical conductors.
ment for Workers
1.2 Two types of line hose are provided and are designated
2.2 Federal Specification:
as Type I, non-resistant to ozone, and Type II and Type III,
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PPP-B-636 Box, Shipping, Filterboard
resistant to ozone.
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2.3 ANSI Standards:
1.3 Five classes of line hose, differing in electrical charac-
C2 National Electrical Safety Code, Section 44
teristics, are provided and are designated as Class 0, Class 1,
C39.5 Safety Requirements for Electrical and Electronic
Class 2, Class 3, and Class 4.
Measuring and Controlling Instrumentation
1.4 Four styles of line hose, differing in design characteris-
C84.1 Electric Power Systems and Equipment-Voltage
tics, are provided and are designated as StyleA, Style B, Style
Ratings
C, and Style D.
1.5 The following precautionary caveat pertains only to the
3. Terminology
test method portion, Sections 16, 17, 18, 19, of this specifica-
3.1 Definitions of Terms Specific to This Standard:
tion: This standard does not purport to address all of the safety
3.1.1 breakdown—the electrical discharge or arc occurring
concerns, if any, associated with its use. It is the responsibility
betweentheelectrodesandthroughtheequipmentbeingtested.
of the user of this standard to establish appropriate safety and
3.1.2 flashover—the electrical discharge or arc occurring
health practices and determine the applicability of regulatory
between electrodes and over or around, but not through, the
limitations prior to use. For specific precautionary statements,
equipment being tested.
see 18.1.1.
3.1.3 electrical testing facility—a location with qualified
2. Referenced Documents personnel,testingequipment,andproceduresfortheinspection
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and electrical testing of electrical insulating protective equip-
2.1 ASTM Standards:
ment.
D 297 Test Methods for Rubber Products—Chemical
3.1.4 electrode clearance—the shortest path from the ener-
Analysis
gized electrode to the ground electrode.
D412 Test Methods for Vulcanized Rubber and Thermo-
3.1.5 insulated—separated from other conducting surfaces
plastic Rubbers and Thermoplastic Elastomers—Tension
by a dielectric substance (including air space) offering a high
D570 Test Method for Water Absorption of Plastics
resistance to the passage of current.
D573 Test Method for Rubber—Deterioration in an Air
Oven
NOTE 1—When any object is said to be insulated, it is understood to be
insulated in a suitable manner for the conditions to which it is subjected.
Otherwise, it is, within the purpose of this definition, uninsulated.
Insulating covering of conductors is one means of making the conductor
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This specification is under the jurisdiction of ASTM Committee F18 on
insulated.
Electrical Protective Equipment for Workers and is the direct responsibility of
3.1.6 isolated—an object that is not readily accessible to
Subcommittee F18.25 on Insulating Cover-up Equipment. This standard replaces
ANSI Standard J6.1, which is no longer available
persons unless special means of access are used.
Current edition approved Jan. 1, 2005. Published February 2005. Originally
approved in 1949 as D1050–49T. Last previous edition approved in 1999 as
D1050–90(1999).
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Standardization Documents, Order Desk, Bldg. 4, Section D,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 700 Robbins Ave., Philadelphia, PA 19111-5094, ATTN: NPODS.
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