US Dept of Labor

Occupational Safety & Health AdministrationWe Can Help

Standard Interpretations - (Archived) Table of Contents
• Status: Archived

Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

July 31, 1984

Mr. Peter J. Schram
Chief Electrical Engineer
National Electrical Code
National Fire Protection Association
Battery March Park
Quincy, Massachusetts 02269

Dear Mr. Schram:

This is in response for an interpretation of cord sets (extension cords) plugged into permanent wiring at construction sites to supply portable electrical hand tools.

Section 305-4(a) of the code requires all 125-volts single-phase, 15 and 20 amperes receptacle outlets which are not a part of the permanent wiring of the building or structure and which are in use by employees shall have ground-fault circuit-interrupter protection for personnel.

I have been advised by my staff that cord sets (extension cords) plugged into permanent wiring at construction sites are temporary wiring and as such require ground-fault protection for personnel on construction sites.

You assistance in this matter will be appreciated.

Sincerely,



John B. Miles, Jr.,
Director
Directorate of Field Operations



Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

Standard Interpretations - (Archived) Table of Contents

Thank You for Visiting Our Website

You are exiting the Department of Labor's Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.

Close