Electrical Extension Cord Safety
WORK AT HEIGHT SAFETY PICTORIAL TRAINING
Electrical
extension cords are widely used in both industry and home. With the wide use of
power tools on construction sites, flexible extension cords often are
necessary. Because they are exposed, flexible, and unsecured, they are more
susceptible to damage than is fixed wiring. Hazards are created when cords,
cord connectors, receptacles, and cord- and plug connected equipment are
improperly used and maintained. Here
are some factors on extension cord safety noted by OSHA.
STRAIN
RELIEF
Do not the pull
the cord by cable. To reduce hazards, flexible cords must connect to devices
and to fittings in ways that prevent tension at joints and terminal screws.
Flexible cords
are finely stranded for flexibility, so straining a cord can cause the strands
of one conductor to loosen from under terminal screws and touch another
conductor.
CORD
DAMAGE
If a cord damaged
means which will lead to electric shock or electrocution. A flexible cord may
be damaged by door or window edges, by staples and fastenings, by abrasion from
adjacent materials, or simply by aging. If the electrical conductors become
exposed, there is a danger of shocks, burns, or fi re. Replace frayed or damaged cords. Avoid running
cords over sharp corners and edges.
DURABILITY
Buy the standard
and good quality material. The OSHA construction standard requires flexible
cords to be rated for hard or extra-hard usage. These ratings are derived from
the National Electrical Code, and are required to be indelibly marked approximately
every foot along the length of the cord.
GROUNDING
Extension cords
must be 3-wire type so they may be grounded, and to permit grounding of any
tools or equipment connected to them.
WET
CONDITIONS
Any electrical equipment’s
used in wet conditions results in serious incidents. When a cord connector is
wet, electric current can leak to the equipment grounding conductor, and to
humans who pick up that connector if they provide a path to ground. Such
leakage can occur not just on the face of the connector, but at any wetted
portion. Limit exposure of connectors and tools to excessive moisture by using watertight
or sealable connectors.
CEMENT SAFETY HAZARDS & CONTROLS
PART 3 | HSE Interview Questions and Answers
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