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June
2003 — Ground Fault Circuit Interrupters (GFCI)
Where
employees are exposed to potential line-to-ground shock hazards
GFCI protection should be used. This is especially important in
workplaces where portable electrical equipment is being used in
wet or damp areas in contact with earth or grounded conductive surfaces.
The GFCI should always be located as close as possible to the electrical
equipment it protects. Remember that GFCI's do not prevent shock.
It simply limits the duration so the heart is not affected. The
shock lasts about 1/40 second (.025 seconds) and can be intense
enough to knock a person off a ladder or otherwise cause an accidental
injury. Emphasize to your workers that they should not consider
a GFCI adequate protection against electrical hazards and that they
must follow all safety steps rigorously.
Important:
This
information is offered by the National Welding Supply Association
and your local distributor as general guidance only and may
not explain all relevant safety precautions or hazards
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