IBEW TEST 2 Flashcards
Which type of laser is best for aligning strut on threaded rod when constructing a trapeze platform?
Point to point self leveling laser
Laser tools are rated by the federal government for safety on the job site. What is the safest class of construction laser?
Class II
Extreme pain, respiratory arrest…. describe a current from ____ to 150 milliamperes.
50
A properly installed ___ has a low resistance to ground and greatly reduces the amount of current that passes through the body.
grounding conductor
What section of the NEC contains the requirements for grounding cord and plug connected equipment?
Section 250.114
What section of the NEC contains the general requirements for grounding fixed equipment that is fastened in place or connected by permanent wiring methods?
Section 250.110
OSHA place the threshold voltage of electric shock at ____
50v
To ensure adequate protection, a(n) ____ must be calculated on the basis of the amount of current present if a short circuit occurs, the time…
flash hazard analysis
White national fire protection association document covers safe working practices with electrical work?
NFPA 70E
Which of the following are categories for shock protection approach boundaries to energized conductors or circuit parts?
- Approved Approach
- Limited Approach
- Nominal Approach
- Restricted Approach
II and IV
Arc bast is a hazard of working on live parts (T or F?)
T
An Arc Fault Circuit Interrupter is a device that monitors both the amount of current leaving the source and the amount of current returning to the source. (T or F)
False
A(n) ___ GFCI requires the amount of current leaving the source and reutnring to the source to be within 5mA of each other
Class A
An AFCI is designed to determine if there is an arc that could start a fire in the protected circuitry. (t or f)
T
What type of anchor comes in zinc-plated, hot-dipped galvanized, and stainless steel?
wedge anchor
