OSHA
According to NEPA 70E, when working on an energized or "live" circuits, the worker must wear appropriate PPE and shall be?
Qualified and competent.
The secondary windings of a control transformer can be identified by what symbols?
X1-X2
Which of the following is a good safety practice to follow?
A. Employ screwdrivers as if they were chisels.
B. Deploy makeshift tools to cut heavy wire, reinforcing wire and bolts.
C. Wear proper PPE when cutting and stripping wire.
D. Use the top step of a step ladder to get higher.
C. Wear proper PPE when cutting and stripping wire.
A step-down transformer with a turns ratio of 5:1 is rated for 240 volts AC at 5 amps for the primary and is rated at ______ in the secondary.
1,200 VA
According to OSHA, an extension ladder should extend at least ______ above the edge of the roof?
3 feet.
On the primary side of a Delta transformer, the voltage of A leg to ground is 120 volts, and C leg to ground is 120 volts, A to C legs are 240 volts across each other. What is the voltage on the B to the ground?
120
A workplace lock-out/tag-out standard is required to?
Prevent the machine from being energized while servicing.
One of your friends has cut their arm and is bleeding severely. How do you treat the injury?
Apply direct pressure over the wound.