Substation Warning Signs

[kraigb]

What is the latest standard used for definition of the placement, content, symbols, etc. for substation warning signs in the United States?

 

[dpc]

You probably need to get ANSI Z535-4 - Product Signs and Safety Labels. This is referenced in NEC and NESC.

There must be a warning sign at each entrance and on each side of the fence.

Because of a court case a few years, the wording typically used is "Danger - High Voltage - Keep Out".

Many previous signs did not include the phrase "Keep Out". A utility lost a lawsuit after a teenage boy was electrocuted (after climbing the fence) because the warning sign did not say explicity "Keep Out". Go figure.

Good luck.

dpc

 

[kraigb]

Thanks, dpc.
I see that ANSI has a number of point documents under Z535
Z535.1-1998 on Color Codes
Z535.2-1998 on Safety Signs
Z535.3-1998 on Safety Symbols
Z535.4-1998 on Product Safety Labels and Signs
Has anyone needed more than just Z535.4 to stay in compliance and to exercise "highest degree of care."
Thanks,
Kraigb

 

[dpc]

I'd review the National Electrical Safety Code (IEEE C2) and the National Electrical Code (NFPA 70).

In the NEC, there is also reference to NFPA 70E-2000, Standard for Electrical Safety Requirements for Employee Workplaces.

 

[stevenal]

Here's what the 2002 NESC has to say on the subject, complete with bad grammar:

A safety sign shall be displayed at each entrances. For fenced electric supply stations, a safety
sign shall be displayed on each side.
NOTE:
ANSI Z535.1-1998, ANSI Z535.2-1998, ANSI Z535.3-1998, ANSI Z535.4-1998, and ANSI
Z535.5-1998 contain information regarding safety signs.