Flexible cords used in hazardous (classified) locations for connection of portable utilization equipment (including lamps operating at more than 8 volts between conductors) shall be of a type approved for ____.

A. damp conditions
B. peak voltages
C. extra-hard usage
D. current surges


Answer: C

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_______ is the percent of workplace fatalities due to failure to follow or have an energy isolation program.

Fill in the blank(s) with the appropriate word(s).

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A rate of return analysis was initiated for the infi­nite-life alternatives shown below.

(a) Fill in the 10 blanks in the incremental rate of return (?i*) columns.
(b) How much revenue is associated with each alternative?
(c) Which alternative should be selected if they are mutually exclusive and MARR is 16% per year?
(d) Which alternative should be selected if they are mutually exclusive and MARR is 11% per year?
(e) Select the two best alternatives at MARR = 19% per year.

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If the base angles of an isosceles triangle each measure 52°, what is the measure of the vertex angle?

What will be an ideal response?

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Support intervals for cables requiring surface installation will not exceed how many feet?

a. 5. b. 10. c. 15. d. 20.

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