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ch 14 grdg bondg

Chapter 14 lesson 4 Grdg and Bndg

QuestionAnswer
For a separately derived system, where a busbar is used for connections of the grounding electrode conductor taps to a common grounding electrode conductor, the busbar must be at least how long? True
Generally in hazardous (classified) locations, locknuts installed on each side of the enclosure, or a locknut on the outside and a bushing on the inside, ? be used for bonding. shall not 501.30
Where flexible metal conduit is installed for a 20-ampere circuit in a Class I, Division 2 location, it shall comply with the requirements of 250.118(5) to perform as an effective path for ground fault current. False Although flexible metal conduit could serve as an equipment grounding conductor if the conditions in 250.118(5) are met, this only applies in general locations. In hazardous (classified) locations, the flexible metal conduit alone cannot be used as the sole ground-fault current path and must be provided with an equipment bonding jumper that meets the requirements in 250.102. The concern is for arcs that would be produced on the interlocking metal tape-type construction of the flexible conduit if it
Where the branch circuit serving a patient care location is a 30-ampere circuit, what is the minimum size required for an insulated copper equipment grounding conductor? 10 AWG
Section 517.14 requires the equipment grounding terminal buses of the normal and essential branch circuit panelboards serving the same individual patient vicinity be bonded together with a(n) ? conductor not smaller than 10 AWG. insulated continuous copper
What is the minimum size required for the bonding conductor for an equipotential plane in an agricultural facility? 8 AWG copper
An area where wire mesh or other conductive elements are embedded in or placed under concrete, bonded to all metal structures and fixed nonelectrical equipment that may become energized, and connected to the electrical grounding system to prevent a difference in voltage from within the plane is defined as a(n) ? . equipotential plane
In Class I, Division 2 locations, rigid metal conduit and Intermediate metal conduit shall be permitted when used with listed threadless fittings True
Where the option to install a patient equipment grounding point is applied in a health care facility, what is the minimum size required for the equipment bonding jumper installed to the grounding terminal of each receptacle serving that location? No smaller than 10 AWG copper
Each agricultural building or structure has to meet the provisions in 250.32 and has to meet the sizing and connection rules in Sections 547.9(B)(1) and (2). Therefore, the minimum size required for the EGC must be no smaller than the largest supply conductor for the building if the same conductor material is used. True
Where an auxiliary grounding electrode is installed for an electric sign on a pole, it shall be in addition to the required equipment grounding conductor with the branch circuit supplying the sign.***** True
Created by: Shawnt321
 

 



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