Electrical Safety – Equipment

Electrical Safety – Equipment

Ensure the electrical equipment is marked with ALL of the following information:

1) The manufacturer’s name or trademark;
2) Voltage;
3) Current;
4) Wattage; and
5) Other ratings (as necessary)?

Is each disconnecting means marked to indicate its purpose?

Ensure sufficient access and working space is provided and maintained around electrical equipment to ensure safe operation and maintenance?

Does the provided working space met ALL of the following criteria:

1) Not less than 30 inches wide in front of the electric equipment;
2) Not used for storage;
3) Has at least one entrance;
4) Has at least three feet in front of live parts;
5) Is illumination; and
6) Has minimum headroom of 6 feet 3 inches?

Are all live parts guarded using approved enclosures and are all covers in place and closed?

Are electrical disconnect switches readily operable from the operating floor level?

Ensure there are means for disconnecting all conductors from the service-entrance conductors include ALL of the following features:

1) A disconnecting means that plainly indicates whether it is open or closed;
2) A disconnecting means installed at a readily accessible location nearest the entrance of the service-entrance conductors; and
3) Each service disconnecting means simultaneously disconnect all ungrounded conductors?

Are live parts of fixtures, lamps, appliances, protected from employee contact?

Are portable handlamps that are supplied through flexible cords equipped with an approved handle that includes a guard attached to the lampholder or to the handle?

Are only weatherproof lampholders and fixtures installed in wet or damp locations?

Are receptacles, cord connectors, and attachment plugs designed to be used only with same voltage or
current rating?

For Cranes, Hoists and Runways

(1) Are BOTH of the following disconnecting means provided:
1) A readily accessible disconnecting means between the runway contact conductors and the
power supply; and
2) Another disconnecting means that can be locked “open” readily accessible?
NOTE: The additional disconnect can be omitted if the unit is floor controlled, the unit is within view of
the power supply disconnecting means, and no fixed work platform is available.
(2) Is a limit switch or other device provided that prevents the load block from passing the safe upper limit of travel of any hoisting mechanism?
For welding equipment Is a disconnecting means provided for ALL of the following arc welders in the supply circuit:

For heating equipment Are ALL of the following safety features provided for the heating equipment and accessories:

1) The converting apparatus and high frequency electric circuits is completely contained within
enclosures of non-combustible material;
2) All panel controls are of dead-front construction;
3) Protective cages or shielding guard work applicators; and
4) A readily accessible disconnecting means to isolate each unit of heating equipment from its supply circuit?

Are “Danger” labels attached when the voltage is over 250 volts AC or DC?
Emergency Systems:

1) Does the facility include provisions for emergency systems intended to supply power for illumination and special loads during a power outage?
2)Is ALL emergency circuit wiring kept entirely independent of other wiring and equipment?
3)Is lighting arranged so that the failure of any single element cannot leave any area in total darkness?