NEC General Requirements Flashcards
7 cards from real Licensed Electrical Contractor practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 NEC General Requirements flashcards as text
Per NEC 110.26(A)(1), what is the minimum clear working space depth in front of equipment operating at 151–600V to ground with exposed live parts on one side and a grounded surface on the other (Condition 2)?
Answer: 3.5 feet
NEC Table 110.26(A)(1) specifies 3.5 feet (42 inches) of working clearance for 151–600V Condition 2.
What does NEC 110.22 require to be legibly marked on disconnecting means?
Answer: The load served and the source of supply
NEC 110.22 requires each disconnecting means to be legibly marked to indicate the load served and its source of supply.
According to NEC 110.12, electrical equipment must be installed in a:
Answer: Neat and workmanlike manner
NEC 110.12 requires all electrical equipment to be installed in a neat and workmanlike manner.
Under NEC 110.14(C)(1), the temperature rating of a conductor connected to a 60°C-rated terminal on a device rated 100A or less must be based on:
Answer: 60°C ampacity tables
NEC 110.14(C)(1) requires that conductors connected to 60°C-rated terminals on equipment 100A or less be sized using the 60°C ampacity column.
What is the NEC definition of a 'qualified person'?
Answer: One who has skills and knowledge related to the construction and operation of electrical equipment and installations
The NEC Article 100 definition of a qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and has received safety training.
NEC 110.10 requires that the components of a circuit be selected so that the circuit's impedance characteristics allow the overcurrent device to:
Answer: Clear fault current without extensive damage to components
NEC 110.10 requires circuit components to be selected to permit the overcurrent device to clear a fault without extensive damage to electrical components.
Per NEC 110.26(D), when is dedicated electrical space required above panelboards and switchboards?
Answer: For the width and depth of the equipment from the floor to a height of 6 feet above or to the structural ceiling, whichever is lower
NEC 110.26(D) requires dedicated electrical space from the floor to 6 feet above the equipment or to the structural ceiling for panelboards and switchboards.