MIL-HDBK-1025/10
Table 32
Insulating Tools for Electrical Workers
Minimum test values
OSHA acceptance1
IEEE in-service2
Tool material
Use
Preferred3
FRP
0.3 meters (100 kV/foot)
0.3 meters (75 kV/foot)
Phase-out4
Wood
0.3 meters (75 kV/foot)
0.3 meters (50 kV/foot)
1
Test values manufacturers should certify for acceptance by buyer.
2
Test values required after acceptance and tested after use in the field. Electrically test at
intervals of not more than 6 months for tools in frequent use. Electrically test at intervals of
not more than one year for tools stored for long periods of time.
3
All new tools will be FRP.
4
Replace wood hot line tools with FRP tools.
5.4.2.3 Insulating Guards. Use insulating plastic guard equipment meeting the
requirements of Tables 33 and 34; ASTM F712, Test Methods for Electrically Insulating
Plastic Guard Equipment for Protection of Workers; ASTM F 968, Specification for
Electrically Insulating Plastic Guard Equipment for Protection of Workers; and ASTM F
15684, Specification for Structure Mounted Insulating Work Platforms for Electrical
Workers.
Table 33
Common Classification for Plastic Guards
Common classifications for plastic guards
Installation
Conductors
Structure/apparatus
Special
Attached hot stick
Line guards
Pole guards
Shape
Eye for removable hot Line guard connectors Ridge pin covers
Size
stick
Insulator covers
Switchblade covers
Attachment
Rope loop or
Deadend covers
Arm guards
More stringent
equivalent for gloving Bus guards
Cutout covers
electrical requirements
or hot stick
Bus "T" guards
Crossarm guards
45
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