Back to Federal guidance

Insulating hydraulic tools for power-line work

Summary A lawyer asked what OSHA meant by insulating fluid and nonconducting hoses in electric-line construction. OSHA said the fluid must not conduct electricity and the hose must meet the cited ANSI rubber-insulating-line-hose specification. Both protect workers against accidental contact with energized lines.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1979-09-10
Date issued
September 10, 1979
Status
Active
Status last verified October 10, 2026

Apply this to your situation

This page explains the general guidance. Ask about your specific situation and see what current federal labor law says, with citations.

About this page: The full text below is the official document from Occupational Safety and Health Administration (OSHA). Ezel adds the plain-English summary and tracks the document's status. The official source linked on this page is authoritative for any reliance.

September 10, 1979

James Thomas Demos, LTD
[Recipient address omitted]
Dear Mr. Demos:

This is in response to your recent letter concerning the accuracy of definitions.

Employees engaged in the Construction of electric transmissions and distribution lines are required to use hydraulic tools that contain an insulating oil and nonconducting hoses. The "insulating type" as used in my April 3, 1978, letter means a fluid that will not conduct electricity; "nonconducting" as used in 29 CFR 1926.951(f)(4)(i) means a hose meeting the requirements of the American National Standards Institute (ANSI) J6.1-1950 (R1971) for rubber insulating line hose.

The requirements for the use of insulating type fluids, and nonconducting hoses, is to protect an employee from electrocution by an accidental contact of the hose with an energized line.

If I may be of any further assistance, please feel free to contact me.

Sincerely,
Grover C. Wrenn Director,
Federal Compliance
and State Programs

What does federal law require in your situation?

Ezel checks current federal labor law against your facts and answers with citations.

Opens in Ezel Pro.

  • Checks the law as it stands today, not only this page
  • Cites every source it relies on, so you can verify it
  • Chat, drafting and research in one workspace