According to NEC Article 250.104(D), the grounded conductor of each separately derived system must be bonded to the nearest available point of the metal water piping system(s) in the area served by the system. Additionally, each bonding jumper must be sized in accordance with Table 250.102(C)(1) based on the largest ungrounded conductor of the separately derived system. Thus, the statement is True.

According to NEC Article 250.86, metal components in a run of underground nonmetallic raceway that are isolated from possible contact and have a minimum cover of 18 inches to all parts of the metal components are not required to be connected to the grounded system conductor, supply-side bonding jumper, or grounding electrode conductor.

According to NEC Article 250.118, listed FMC and LFMC must contain an equipment grounding conductor if the raceway is installed for the purpose of flexibility after installation or minimizing the transmission of vibration from equipment. Therefore, the correct answer is b or c.

According to NEC Article 250.140, the grounded circuit conductor for the controlled lighting circuit is required to be installed at the location where switches control lighting loads supplied by a grounded general-purpose branch circuit. This requirement is particularly relevant in bathrooms, hallways, stairways, and other rooms suitable for human habitation, as defined in the applicable building code, to ensure safety and compliance with electrical standards.

According to NEC Article 250.52(A)(3), one or more metal in-ground support structures in direct contact with the earth vertically for 10 ft or more, with or without concrete encasement, is permitted to be a grounding electrode.

According to NEC Article 250.68, the metal structural frame of a building is permitted to be used as a conductor to interconnect electrodes that are part of the grounding electrode system. Additionally, hold-down bolts securing the structural steel column that connect to a concrete-encased electrode located in the support footing or foundation are allowed to connect the structural frame to the grounding electrode.

According to NEC Article 250.64, grounding electrode conductors smaller than 6 AWG must be protected in rigid metal conduit, IMC, PVC conduit, electrical metallic tubing, or cable armor to ensure their safety and integrity.

According to NEC Article 250.66, if the grounding electrode conductor or bonding jumper is connected to a single or multiple rod, pipe, or plate electrode(s), and does not connect to other types of electrodes that require a larger conductor size, it shall not be required to be larger than 6 AWG copper wire.

According to NEC Article 250.104(A)(3), the metal water piping systems installed in or attached to a building structure must be bonded to any of these options: the building structure disconnecting means enclosure, the equipment grounding conductor run with the supply conductors, or one or more grounding electrodes used.

According to NEC Article 250.104, exposed structural metal that is interconnected to form a metal building frame, which is not intentionally grounded or bonded and is likely to become energized, shall be bonded to any of these options: the service equipment enclosure or building disconnecting means, the grounded conductor at the service, or a grounding electrode of sufficient size.

According to NEC Article 250.86, metal components do not need to be connected to the equipment grounding conductor or supply-side bonding jumper if they are either installed in a run of nonmetallic raceway with a minimum cover of 18 inches or encased in not less than 2 inches of concrete. Therefore, the correct answer is a or b.

According to NEC Article 250.102, the bonding jumper used to bond the metal water piping system shall be sized in accordance with Table 250.102(c)(1), except as permitted in 250.104(A)(2) and 250.104(A)(3), which provide specific exceptions for certain situations.

According to NEC Article 250.68(C)(1), the common grounding electrode conductor for multiple separately derived systems is permitted to be a metal water pipe, which is recognized for its effective grounding capabilities.

According to NEC Article 250.118, listed FMC can be used as the equipment grounding conductor if the conduit does not exceed a trade size of 1 ¼. Therefore, the correct answer is 1 ¼.

According to NEC Article 250.122, when circuit conductors are installed in parallel in multiple raceways or cables, the equipment grounding conductor must also be installed in parallel in each raceway or cable. The sizing of the EGC must comply with the requirements based on the overcurrent protective device for either the feeder or branch circuit. Therefore, the statement is True.

According to NEC Article 250.66, if the grounding electrode conductor or bonding jumper connected to a concrete-encased electrode does not connect to other types of electrodes that require a larger conductor size, it shall not be required to be larger than 4 AWG copper.

According to NEC Article 250.64(B), ferrous metal raceways and enclosures for grounding electrode conductors must indeed be electrically continuous from the point of attachment to the cabinet or equipment all the way to the grounding electrode to maintain an effective grounding system.

According to NEC Article 250.52(A)(2), grounding electrodes made of bare or electrically conductive coated iron or steel plates must be at least 30 inches thick to ensure proper functionality and resistance to corrosion.

According to NEC Article 250.24(C)(1), when service-entrance conductors are installed in parallel, the grounded conductor must be sized based on the total circular mil area of the parallel ungrounded conductors, but it shall not be smaller than 1/0 AWG.

According to NEC Article 250.52(A)(3), a rebar-type concrete-encased electrode with an additional rebar section that extends to an accessible location must not be subject to corrosion for it to be used for the connection of grounding electrode conductors and bonding jumpers.

According to NEC Article 250.122, if multiconductor cables are installed in parallel within the same raceway, auxiliary grounding conductors may be used. Specifically, one equipment grounding conductor that is sized in accordance with the article is permitted in combination with the equipment grounding conductors provided within the multiconductor cables, and all must be connected together. Therefore, the correct answer is one.

According to NEC Article 250.122, if circuit conductors are installed in parallel in the same raceway or cable tray, a single wire-type conductor may be used as the equipment grounding conductor. This conductor must be sized according to the requirements based on the overcurrent protective device for either the feeder or the branch circuit. Thus, the correct answer is a or b.

According to NEC Article 250.104, if the metal frame of a building or structure is used as the grounding electrode for a separately derived system and is already bonded to the metal water piping in the area served, a separate water piping bonding jumper is not required. Therefore, the statement is False.

According to NEC Article 250.64(F), bonding jumper(s) from grounding electrode(s) may be connected to an aluminum or copper busbar that is not less than ¼ in. thick x 2 in. wide and of sufficient length to accommodate the necessary terminations for the installation.

According to NEC Article 250.118, listed FMC can be used as the equipment grounding conductor if the length in any ground return path does not exceed 6 ft and the circuit conductors contained in the conduit are protected by overcurrent devices rated at 20A or less. Thus, the correct answer is 20A.

According to NEC Article 250.64, a copper or aluminum grounding electrode conductor that is 6 AWG or larger and exposed to physical damage must be protected using rigid metal conduit, IMC, PVC conduit, reinforced thermosetting resin conduit Type XW (RTRC-XW), EMT, or cable armor.

According to NEC Article 250.122, sectioned equipment grounding conductors smaller than 1/0 AWG are permitted in multiconductor cables as long as the combined circular mil area of the sectioned conductors in each cable complies with the specified requirements. Therefore, the correct answer is 1/0.

According to NEC Article 250.64, the bonding jumper must be installed as specified in subsections (A), (B), and (E), and the points of attachment of the bonding jumper(s) must be accessible. Therefore, the correct answer is a or b, as both terms imply accessibility.

According to NEC Article 250.94, communications system bonding termination connections to an aluminum or copper busbar must be at least ¼ in. thick x 2 in. wide and of sufficient length to accommodate at least three terminations for communications systems, in addition to other connections.

According to NEC Article 250.64, grounding electrode conductors and grounding electrode bonding jumpers in contact with the earth are not required to comply with 300.5 but must be buried or otherwise protected if they are subject to physical damage.

According to NEC Article 250.64, grounding electrode conductors that are 6 AWG and larger, when not exposed to physical damage, can be run along the surface of the building construction without the need for metal covering or additional protection.

According to NEC Article 250.102, a building or structure must have the interior metal water piping system bonded with an equipment grounding conductor sized in accordance with Table 250.102(C)(1). This table specifies the sizing based on the size of the supply conductors.

According to NEC Article 250.104, where isolated metal water piping systems are installed in a multiple-occupancy building, the bonding jumpers can be sized in accordance with Table 250.122, based on the rating of the largest overcurrent device supplying the occupancy. This ensures that the bonding jumper is appropriately sized for the electrical load and safety requirements.

According to NEC Article 250.68(C)(2), the common grounding electrode conductor can be connected to the metal structural frame of the building, and the conductor must not be smaller than either 3/0 copper or 250 kcmil aluminum, making the correct answer a or b.

According to NEC Article 250.94, means for connecting intersystem bonding conductors are not required in situations where communications systems are not likely to be used, indicating that bonding requirements are contingent upon the presence of such systems.

According to NEC Article 250.30, the building or structure grounding electrode system must be used as the grounding electrode for the separately derived system, ensuring effective grounding and safety.

According to NEC Article 250.104(B), metal gas piping that is installed in or attached to a building is considered bonded when one or more grounding electrodes are utilized, provided that the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size. Thus, the statement is True.

According to NEC Article 250.68(A), interior metal water piping that is electrically continuous with a metal underground water pipe electrode and is located not more than 5 ft from the point of entrance to the building may be used to extend the connection to grounding electrodes.

According to NEC Article 250.52(A)(2), a buried iron or steel plate used as a grounding electrode must expose not less than 2 sq ft of surface area to the exterior soil to ensure proper grounding effectiveness.

According to NEC Article 250.102, equipment bonding jumpers must be made of copper, aluminum, copper-clad aluminum, or other corrosion-resistant materials to ensure reliability and longevity in grounding applications.

According to NEC Article 250.104, metal water piping systems must be bonded to the grounded conductor at the service, the service equipment enclosure, or the grounding electrode, provided that the grounding electrode conductor or bonding jumper is of sufficient size. Therefore, the correct answer is any of these.

According to NEC Article 250.104(D), metal water piping systems and structural metal that forms a building frame must be bonded to separately derived systems in accordance with the provisions outlined in sections 250.104(D)(1) through 250.104(D)(3). Therefore, the statement is True.

According to NEC Article 250.104, if exposed structural metal that is interconnected to form the building frame exists in the area served by the separately derived system, it must be bonded to the grounded conductor of each separately derived system. Additionally, each bonding jumper must be sized according to Table 250.102(C)(1) based on the largest ungrounded conductor of the separately derived system. Therefore, the statement is True.

According to NEC Article 250.122, the equipment grounding conductor in each multiconductor cable must be sized based on the overcurrent protective device for the feeder or branch circuit, except as provided in 250.122(F)(2)(b) for raceway or cable tray installations. Therefore, the correct answer is overcurrent protective device for the feeder or branch circuit.

According to NEC Article 250.68(D), tap connections to a common grounding electrode conductor for multiple separately derived systems may be made to a copper or aluminum busbar that is not smaller than ¼ in. thick x 2 in. wide to ensure proper function and safety.

According to NEC Article 250.68(A), interior metal water piping that is electrically continuous with a metal underground water pipe electrode and is located more than 5 ft from the point of entrance to the building shall not be used as a conductor to interconnect electrodes of the grounding electrode system.

According to NEC Article 250.64(D), if a building or structure is supplied by a service or feeder with two or more disconnecting means in separate enclosures, the grounding electrode connections must be made in accordance with the specified subsections.

According to NEC Article 250.52(A)(2), grounding electrodes made of bare or electrically conductive coated iron or steel plates must be at least 1/4 inch thick to ensure proper functionality and resistance to corrosion.

According to NEC Article 250.104(B), exposed structural metal that is interconnected and likely to become energized is considered bonded when it is connected to one or more grounding electrodes, provided that the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size. Thus, the statement is True.

According to NEC Article 250.30, when a building or structure is supplied by a feeder from an outdoor separately derived system, establishing a bonding jumper at both the source and the first disconnecting means is allowed only if it does not create a parallel path for the grounded conductor, which could lead to unwanted current flow.