A flexible cord may be damaged by
door or window edges, staples and fastenings
, abrasion from adjacent materials, or simply by aging. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire.
Which of the following is a danger of electricity?
Coming in contact with an electrical voltage can cause current to flow through the body, resulting in
electrical shock and burns
. Serious injury or even death may occur.
Which of the following answer options can damage flexible and extension cords?
A flexible cord may be damaged by
door or window edges, staples and fastenings
, abrasion from adjacent materials, or simply by aging. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire.
Which one of the following circuit interrupts is most effective at preventing major shocks?
Which one of the following circuit interrupts is most effective at preventing major shocks?
GFCI
is the right answer because others cannot shut down electricity immediately.
Which of the following is not a category of electrical burns?
Shock
is the answer.
When can flexible cords be used in the workplace?
In sum, flexible power cords/cables used to power portable lamps and plug-in type portable construction power tools are permitted under Subpart K to
be run through walls, ceilings, or floors
(where necessary).
What is the safest ladder to use around electricity?
For most tasks, an aluminum ladder is ideal; however, if you are working around electricity, you need to use a
fiberglass ladder
, instead. Unlike its aluminum counterpart, fiberglass ladders are non-conductive, making them the safer choice when working with electricity.
What are the four effects of electricity?
- magnetic effect.
- heating effect.
- chemical effect.
- electric shocks.
What is the effect of electricity on human body?
| Electric current (contact for 1s) Effect | 50 to 150 mA Extreme pain. Respiratory arrest. Muscles reactions. Possible Death. | 1 to 4.3 A Fibrillation of the heart. Muscular contraction and nerve damage occur. Likely death. | 10 A Cardiac arrest, severe burns. Death is probable |
|---|
How do you protect yourself when handling electrical objects?
- Never touch a fallen power line. …
- Avoid contact with overhead power lines during cleanup and other activities.
- Do not drive through standing water if downed power lines are in the water.
Which one of the following methods most effectively protects machines?
Feedback:
Service and equipment grounding
MOST effectively protects machines, tools, and operators against damage from electrical current.
Is received when electrical current passes through the body?
An electrical shock
is received when an electrical current passes through the body. The human body has a low resistance to electricity, making it a good conductor, like most metals. … Whenever two wires are at different voltages, current will pass between them if they are connected.
When must you inspect your tools and extension cords?
Before use or return to service, testing should be conducted on each piece of equipment
every three months
. A continuity test is needed to make sure the extension cord or power tool has a grounded wire.
What are three types of electrical burns?
Burns caused by electricity may be of three types:
electrical burns, arc burns, and thermal contact burns
. Electrical burns can result when a person touches electrical wiring or equipment that is used or maintained improperly. Typically, such burns occur on the hands.
How many types of electrical burns are there?
There are
four main types
of electrical injuries: flash, flame, lightning, and true. Flash injuries, caused by an arc flash, are typically associated with superficial burns, as no electrical current travels past the skin.
What are the two best means of avoiding injury from electrical devices?
The two best means of avoiding injury from electrical devices are
insulation and grounding
. … Insulators help stop or reduce the flow of electrical current, which in turn helps prevent shocks, short circuits and fires.
