Terms
Ground Fault Circuit Interrupter (GFCI)
A device that protects people and equipment by de-energizing a circuit within an established period of time when a ground fault current exceeds the values established for a Class A device (4–6 mA).
Name 2 out of the 4 OSHA's focus four
What is the test called when you are verifying it is safe
live-dead-live test.
What is the class rating for hard hats
Class E or Class G
OSHA LOTO rule prevents what
unexpected energization or startup of equipment and machines.
Arc flash
The light and heat produced from an electric arc that has enough electrical energy to cause substantial damage, fire, and even injury.
Most electrical accidents occur with handheld power tools
True
False
True
What are three primary causes for unsafe electrical incidents
What class is a white tag
Class 1
What is the ratio for ladder positioning
d=horizontal distance to resting point
The ratio for H to D should be 4 to 1
Hot stick
A manually operated insulated tool designed for disconnecting switches, removing and inserting fuses, applying and removing temporary grounds, and testing.
What voltage levels must you protect yourself from
50v or higher
What risk controls are less effective because they do not remove the hazard
Awareness, administrative controls, and PPE
What are insulated blankets used for
used to cover equipment and protect from accidental contact.
when on scaffolding you must wear
harness and lanyard
Grounded tool
An electric tool that has a power cord with a three-prong plug or some other mechanism that provides a low-impedance ground path for a ground fault current to return to its source. This setup allows an overcurrent device to operate in the event of a ground fault, which protects the user from shock.
What part of the body has the most resistance
Skin
Warning sounds on a jobsite are an example of _____.
worker awareness
Hot sticks keep you at a safe distance while:
Safety Data Sheets (SDSs)will list
procedures for using, storing, and disposing of solvents and chemicals.
Polychlorinated biphenyls (PCBs)
Toxic chemicals that may be contained in liquids used to cool certain types of large transformers, capacitors, and large switches.
Name three types of electrical burns
Shock can cause loss of muscle control
True
False
True
What do you use while discharging a capacitor
Discharge probe
Maintaining three-point contact on a ladder means that _____.
you must either have both feet and one hand on the ladder or both hands and one foot as you climb