NCCCO Core Exam Outline (A+ Guaranteed)

Timber or steel correct answers These materials should be used when setting up on soft surfaces such as soft ground, asphalt or backfilled material Over the corner correct answers On crawler cranes, which boom position creates the greatest ground pressure Blocking correct answers Allows the weight of the crane and load to be distributed over a greater surface area. Should be used under outrigger floats at all times. 3 correct answers Blocking should be at least how many times the surface area of the float Energized correct answers Overhead power lines must be considered to be in this condition until electrical authorities indicate otherwise Prohibited zone correct answers No part of the crane or load must ever enter this area around an energized power line kV correct answers The prohibited zone must be enlarged as this increases 20 foot correct answers What minimum distance does OSHA require be maintained when voltage up to 350 kV is unknown 50 foot correct answers What minimum distance is required if the voltage is over 350 kV and unknown Qualified signal person correct answers This person must be appointed any time the crane is working within a boom's length of the prohibited zone Tag lines correct answers The use of these should be avoided when lifting near power lines, however if necessary should be non-conductive type Above power lines correct answers Avoid operating cranes or handling materials in this area of power lines Remain in the cab correct answers What does an operator do if the crane comes in contact with a power line Jump correct answers If it is necessary to leave the crane cab before power lines are de-energized after contact, how does the operator exit the cab transmission towers correct answers A crane can also become electrically charged when working close to these (radio, microwave, cell)