A ten-hour OSHA card _________________________.
A. expires after 1 year
B. expires after 2 years
C. expires after 3 years
D. does not expire
Answer: D
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Answer the following statement(s) true (T) or false (F)
1. Star-delta motor starting is sometimes called double-delta starting. 2. Star-delta motors are similar in construction to standard squirrel cage motors. 3. Star-delta motors may be used where a reduced starting current is required. 4. A disadvantage of open transition starting is that it does not require accessory voltage reducing equipment. 5. Closed transition starting is accomplished by adding another three pole contactor and resistors to the circuit.
What NEC chapter would you expect to find rules that apply to the installation of branch circuits, feeders, services, fuses, circuit breakers, and grounding?
a. Chapter 2, Wiring and Protection b. Chapter 3, Wiring Methods and Materials c. Chapter 4, Equipment for General Use d. Chapter 5, Special Occupancies
Which of the following is the symbol for a hemispheroid?
Figure
All branch circuits serving patient care areas shall be provided with a(n) ____ by installation in a metal raceway system or a cable having a metallic armor or sheath assembly.
A. adequate insulation B. effective ground-fault current path C. discrete pathway D. rigid isolated conduit