![]() T/FĪ grounding electrode connection is required to be made at a(n) ? location anywhere from the load end of the overhead service conductors, service drop, underground service conductors, or service lateral up to and including the terminal or bus to which the grounded conductor is connected in the service disconnecting means. The service disconnecting means used for a grounded supply system is required to be listed as suitable for use as service equipment. Must be not smaller than 1/0 AWG (generally) What 6 characteristics are required for ungrounded conductors installed in parallel? Carries the maximum unbalanced return neutral loadĢ.Serves as an effective ground-fault current path in ground fault conditions The grounded neutral conductor serves which two purposes for a grounded service?ġ. Name the four conductors in the grounding and bonding scheme for a service supplied by a grounded system? ![]() The NEC generally prohibits the use of an interior metal water piping system to connect grounding electrodes to the grounding electrode conductor beyond a distance of ? from the point of entrance to the building or structure.Ī concrete-encased electrode can be installed in either a vertical or horizontal orientation, and it must have not less than ? of one or more conductive rebar or rods, or a 4 AWG bare copper conductor. NEC Table ? is required to be used for minimum sizing of equipment grounding conductors for branch circuits and feeders.Ī metal underground water pipe that is in direct contact with the Earth for ? or more is a code-recognized as a grounding electrode and must be included in the grounding electrode system. What is the circular mil area of a 6 AWG copper conductor? What part of Article 250 covers grounding electrode conductors?Ī bonding conductor for a metal water piping system is sized using ?. What is the minimum-size copper equipment grounding conductor required for a 60-ampere branch circuit? How many equipment grounding conductors are required to be installed with branch circuits serving patient care spaces?Įquipment grounding conductors installed with medium-voltage cables are generally required to be sized based on Table 250.122 and never smaller than ? copper. What is the largest size aluminum grounding electrode conductor required by the NEC? ![]() ![]() Groundg and Bondg Gounding andBonding Test QuestionĪ supply side bonding jumper is required to be sized based on the overcurrent device protecting the circuit. ![]()
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