The NEC® requires that all grounding electrodes be _____.
a. bonded
b. copper
c. copper-clad aluminum
d. green
a. bonded
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All hazard/risk categories require the use of __________________.
A. safety glasses B. FR clothing C. a hard hat D. leather work boots
Properly designed porch roofs can shade windows to reduce solar gain, particularly useful for ____ facing windows that are difficult to shade due to low sun angles.
A. north B. south C. northeastern D. east and west
OSHA regulations require fall arrest equipment withstand a minimum impact force of _______.
A. 1,800 pounds (8 kN) B. 5,000 pounds (22.2 kN) C. 3,600 pounds (16 kN) D. 400 pounds (1.8 kN)
The compressor in a refrigeration system ____.
A. raises the boiling point of the refrigerant B. pumps the refrigerant throughout the system C. both a and b D. none of the above