- Electrical hazards include electrocution,
fire, or explosions. Even slight shocks can lead to injury or
installations must comply with OSHA electrical
standards. Among the many provisions included in the
standards are the following requirements:
- All of the metal framework on electrically driven
machines must be grounded, including the motor,
motor casing, legs, and frame. This includes other
equipment such as lights that may be mounted on the
- All circuit breakers and fuse boxes must be labeled
to indicate their purpose—that is, what area of the
plant they power or protect. Appropriately rated fuses
must be used. All unused holes in electric boxes must
- All electrical components must be approved by a
Nationally Recognized Testing Laboratory for the
specific location where the equipment will be used.[1926.403(a)]
- All machines must have a main power disconnect for lockout/tagout.
These cords are improperly wired directly to the
electrical circuit, are not protected by a GFCI, and are
two-wire cords that are not grounded and not rated for
hard- or extra-hard service.
In addition, all machines should have the following:
- A magnetic switch or other device to prevent
automatic restarting of the machine after a power
failure. Such an unexpected start-up could expose
the worker to moving parts.
- An emergency stop device (panic bar or dead-man
switch) within reach of operators working in the
normal operating position.
- Clearly marked controls that are within easy reach
of the operator and away from the hazard area.