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• Standard Number: 1926.404(b)(1)

September 17, 1992

Mr. Stephen E. Herr
Safety Administrator
United Telephone - Eastern
P.O. Box 1201
Carlisle, Pennsylvania 17013-0905

Dear Mr. Herr:

This is in response to your July 17 letter requesting an interpretation of an Occupational Safety and Health Administration (OSHA) standard addressing ground-fault protection for branch circuits. I apologize for the delay in responding to your inquiry.

With regard to GFCI protected extension cords, please be advised that approved portable GFCI's are acceptable branch circuit protection as required by §1926.404(b)(1). The GFCI protected extension cords listed in the literature accompanying your letter are advertised as being approved by UL and therefore meet the requirements for branch circuit ground-fault protection.

If we can be of any further assistance, please contact Roy Gurnham or Dale Cavanaugh of my staff in the Office of Construction and Maritime Compliance Assistance at (202) 219- 8136.

Sincerely,



Patricia K. Clark, Director
Directorate of Compliance Programs

Standard Interpretations - Table of Contents Standard Interpretations - Table of Contents