Electrical Safety
What are two most dangerous electrical incidents in the construction industry?
What is electrocution and arch flash.
What does LOTO stand for?
Lock out / Tag out
Person who is assigned to ensure the safety of entrant(s).
Who is the attendant.
Point at which an object is perfectly balanced.
What is Center of Gravity
What must be completed before demolition work starts?
What is the engineering survey.
This safety device interrupts the flow of electrical current in a circuit when there is an imbalance, preventing electric shock.
What is a ground fault circuit interrupter (GFCI).
What device must be installed to prevent unwanted reenergizing of equipment?
What is a lock
Person(s) authorized to enter the confined space.
Who is the entrant(s).
What is the minimum distance a crane must stay away from power lines?
What is the 20 feet.
What is 50% of the crane capacity.
What type of extension cord is properly rated to be used on construction sites?
What is hard or junior hard use rating.
Three people are working on equipment with two energy sources. How many locks do they need?
What is 6 locks.
What is the most common potential hazard in a confined space?
What is a hazardous atmosphere.
What must be on all rigging equipment to be safe to use?
What is the capacity tag
What must erected at the entrances to the building during demolition?
What is a sidewalk shed or canopy.
What is romex wire.
What is the minimum safe distance to work from a power line?
What is 10 feet.
What is large enough to enter, limited access, not designed for human occupancy.
What are the three types of rigging hitches?
What are the vertical, choker, and basket hitches.
What is the area must be protected, chute installed when stepper than 45 degrees.
How much amperage does it require to stop the heartbeat?
What is 0.1 amps
What is the safe distance temporary lighting open connections must stay above workers?
What is 8 feet.
What is the minimum safe percentage of oxygen in the air by volume?
What is 19.5%.
Demonstrate the crane hand signal for emergency stop.
What is two arms straight out moving in a forward and backward motion horizontally.
What is the height of a wall that can free stand during demolition?
What is one story.