Grounded conductor brought to service equipment. Surge Protection Devices (SPD) (formerly called TVSS) 1.
(A) Insulation. 20. Exception 1: Where the system bonding jumper [250. supply-side bonding jumper B Mar 2, 2021 · But let’s first look at what constitutes an equipment grounding conductor (EGC) and how it differs from the oft-misunderstood grounding electrode conductor (GEC) that connects noncurrent-carrying metal parts of the electrical service to the electrode buried in the earth. If circuit conductors are spliced within a box or terminated on equipment within or supported by a box, all wire-type equipment grounding conductor(s) associated with any of those circuit conductors shall be connected within the box or to the box in accordance with 250. d) 430. 102(C)(1) for sizing the grounded conductor. (2) All meter enclosures are located “Grounding Electrode Conductor is run from the service equipment to one of the grounding electrodes that are bonded together. 2020 NEC Significant Code Changes Part 1 250 – Grounding and Bonding 250. 122 for a 250A protective device (must use the next larger or 300A). 3. (T or F) True. 250 kamil 16. 2). The size of the solidly grounded circuit conductor (s) shall be the larger of that determined by 250. This conductor shall be sized in accordance with Table E3603. ”. 140 shall be permitted to be connected to the grounded circuit conductor. B. 16. 40 C. James Stallcup Sr. 019 (see text immediately above) clearly articulates this fact. 2 only Study with Quizlet and memorize flashcards containing terms like Grounded electrical systems shall be connected to earth in a manner that will _____. The equipment grounding conductor may run with or enclose the circuit conductors. 122 rules the sizing of equipment grounding conductors. The conductor must be large enough to carry the fault current. 122 displays the minimum conductor size for grounding raceways and equipment based on the ampere rating or setting of the circuit’s overcurrent protective device. 60 Ex 2] (Fig. Generally, the NEC requires only one equipment grounding conductor per circuit, which can be any type specified in this section. 23 requires that whenever a service is derived from a grounded neutral system, the grounded neutral conductor must be brought into the service entrance equipment and bonded to the equipment enclosure and ground bus, even if the grounded conductor is not needed for the load supplied by the service. 186 (A) (1) or (A) (2). 102 (C) or 220. Item 6. The requirements in these sections call for all conductors of A grounding electrode conductor shall be used to connect the equipment grounding conductors, the service equipment enclosures, and the grounded service conductor to the grounding electrode(s). 24(C) (1) states that this conductor shall be smaller than the required grounding electrode conductor specified in 250. If you're referring to the grounded conductor or neutral being brought to the service disconnect then it should comply with 230. €. Equipment Grounding Conductor (EGC): Table 250. It basically says if the system is grounded that the grounded conductor must be brought to the service equipment. NEC Section 250-24(c), is a requirement to connect the equipment grounding conductors, the service-equipment enclosures, and where the system is grounded, the grounded service conductor to a grounding electrode. A main bonding jumper 11) 250. 24 (D) (1) through (D) (4). The IEEE Emerald Book recommends the use of equipment-grounding conductors in all circuits, not relying on a raceway system alone for equipment grounding. 23 Size and Rating. This grounding electrode system is made up of conductive objects in direct contact with the earth as spelled out in Part III of Article 250. If the ungrounded service -entrance conductors are installed in parallel in two or more raceways or cables, the grounded conductor shall also be installed in parallel. 24 I see 250. It provides a low-resistance path for fault currents to flow into the ground in case of a fault or equipment failure, minimizing the risk of electric shock to individuals who come in contact with the equipment. The correct answer is (b) bus. The grounded conductor is the one that is intentionally grounded. 66 when the service-entrance conductors are 1,100 kcmil copper and smaller. Step 3: Select the proper size neutral conductor per Table 310-16. 24(C) (1) and (2), the minimum sizing of the grounded conductor brought to service equipment is spelled out. The grounded conductor brought to service equipment shall be routed with the phase conductors and shall not be smaller then specified in Table _____ when the service-entrance conductors are 1,100 kcmil copper and smaller. 42 (C). The effective ground-fault current path must also be of the lowest possible impedance. (C) Grounded Conductor Brought to Service Equipment Where an alternating current system running at less than 1000 volts is grounded at any point, the grounded conductors will be run to each service means of disconnecting and will be routed with the ungrounded conductors to each means The grounded conductor (s) shall be installed in accordance with 250. Lightning Protection System. When something is “grounded” in accordance with the NEC ®, it is connected to ground or to a conductive body that extends the ground connection. Feb 1, 2000 · Grounding conductor used to ground equipment: Sec. 2. Equipment grounding is a safety measure to prevent electric shock. It carries all the fault current from the equipment grounding arrangement returning to the source. Grounding is the physical connection of building’s grounded service conductor to the ground (earth) for the purpose of limiting any voltage caused by lightning, line surges, or unintentional contact with higher voltage lines. What type of bonding jumper connects two or more portions of the equipment grounding Jun 21, 2011 · Because the service neutral conductor provides the effective ground-fault current path to the power supply [250. Jul 26, 2018 · Occupation. Mar 1, 2021 · For sizing a grounding electrode conductor (GEC) for a single service, the grounding electrode conductor is required to be sized in accordance with 250. Although it's rather simple component, an equipment Sep 3, 2023 · National Electrical Code (NEC) Section 250. According to the NEC, the working space in front of a service entrance panel in a residential wiring. For the purpose of 230. suitable for use only as service equipment. 66 (b) 250. This is very poor, short-sighted thinking. A main bonding jumper shall connect the grounded conductor (s) to each service disconnecting means enclosure. 52 Nov 10, 2018 · (C) Grounded Conductor Brought to Service Equipment. When grounding is accomplished through a resistor, an impedance device, or a surge arrester, the grounding is considered to be solid. Look at 250. Where an ac system operating at 1000 volts or less is grounded at any point, the grounded conductor(s) shall be routed with the ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus. If the ungrounded service -entrance conductors are installed in parallel in two or more raceways, the grounded conductor shall also be installed in parallel. Apr 21, 2008 · In 250. 122 (c) 310. 24 Grounding, Service Equipment – https://www. 24(C). Where an ac system operating at 1000 volts or less is grounded at any point, the grounded conductor(s) shall be routed with the ungrounded conductors t o each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus. The size of the grounded conductor in each raceway or cable shall be based on the total circular mil area of the parallel ungrounded conductors in the Article 250. 24, 250. M. a) 250. Reviewing these definitions should help you understand that service conductors originate at the serving utility (service point) and terminate on the line side of the service disconnecting means (service equipment). 24(C)" The main components of this effective ground-fault current path are made up of the equipment grounding conductors such as bonding jumpers (main, system, supply-side, equipment) and service or system grounded conductors. If installed according to the 2014 NEC, would a grounded conductor be required to be run to the service equipment? Go To Full Code Chapter. Connections on the load side of the service disconnecting means are not 250. Equipment Grounding Conductors. 25 – Grounding Systems Permitted to Be Connected on the Supply Side of the Disconnect 250. This Subsection directs the user to the reference for the _MINIMUM_ Grounded Conductor size. The continuity test ensures that the equipment grounding conductor is electrically continuous. GECs. Apr 20, 2016 · When you look up Conductors, then Grounded you will find the first reference given is Alternating current systems, 250. • The 2011 NEC added wording to make it Feb 13, 2018 · 250. If you use a metal conduit to protect a grounding conductor, you must bond it to the conductor at both ends. 23(C) Grounded Conductors. 24(D)] Jul 1, 2000 · You use an equipment-grounding conductor (EGC) to ground the noncurrent-carrying metal parts of equipment. 24(B) requires that “an unspliced main bonding jumper shall be used to connect the EGC and the service disconnecting enclosure to the grounded conductor” and section 250. 1. 148(A) Connections and Splices. Photo 1. Typically, the ground wire connects to the outer casing of electrical boxes, appliances, or tools. 50. A building or other structure served shall be supplied by only one service unless permitted in 230. 24(C) requires the grounded conductor to be routed with the phase conductors from the transformer to the service equipment. NEC Table 250. It’s the neutral because of where it is derived from, namely the neutral point of the system. It must be one or more than one or a combination of the following: If an ac system is grounded at any point and is provided with a grounded conductor at the service point, a grounded conductor (s) shall be installed and routed with the ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded conductor (s) terminal or bus. Electrically Apr 2, 2018 · Apr 2, 2018. 17. 24(B) Main Bonding Jumper For a grounded system, an unspliced main bonding jumper shall be used to connect the equipment grounding conductor(s) and the service-disconnect enclosure to the grounded conductor within the enclosure for each service disconnect in accordance with 250. The grounded conductor shall not be smaller than the minimum size as required by 250. Such systems have no direct connection from circuit conductors of one system to circuit conductors of another system, other than those established through bonding or grounding Jan 16, 2007 · Where equipment grounding conductors are installed with paralleled feeder conductors, the requirements in 310. a and b D. 122, but may be required to be sized larger to ensure adequate capacity. 61 whichever is greater (sized no smaller than the grounding electrode conductor or calculated load) On a utility supplied service there is no need for a ground ing Apr 27, 2016 · 250. 68(C)(3) – Grounding Electrode Dec 11, 2019 · A. 2 General. , When two conductive parts are connected Parallel equipment grounding conductors Our designers are considering an installation of nonmetallic cable tray with MC cables for a parallel feeder, which brought up some questions. The size of an aluminum grounding conductor that will be brought to the service should be A. In electrical systems, it's essential to ensure personal safety and prevent electrical Feb 28, 2021 · Grounded Conductor Brought to Service Equipment. 134 (B) is in order. 2(A) and (B). Journeyman Electrician. As defined in Article 100, the Grounding Electrode Conductor is used to connect the system grounded conductor or the equipment to a grounding electrode or to a point on the grounding electrode system. A properly sized EGC protects. In fact, it may not even be grounded. 250,000 circular mils. 24 (C) Grounded Conductor Brought to Service Equipment Where an ac system operating at less than 1000 volts is grounded at any point, the grounded conductor(s) shall be run to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or _____. e. 24(C) Grounded Conductor Brought to Service Equipment and immediately below in (C)(1) is a reference to 250. #4. #2. In this 2011 image, the 12,470-volt, fully submersible electric service was just set in place. 66 is used for sizing grounding electrode conductors for alternating current systems. A premises wiring system whose power is derived from a source of electric energy or equipment other than a service. . A Grounded Conductor is defined as a system or circuit conductor that is intentionally grounded. 5' high, 30" wide, and extend at least __________ feet in front of the panel. Grounded conductors shall comply with 2. The grounding electrode conductor c. b) grounding. Service equipment that has its grounded conductor terminal busbar bolted to the enclosure and no bonding jumper) would be rated A. permanently grounded-service equipment D. grounded circuit conductor for grounding equipment. no equipment ground. 142(A)(1) and 352. 2(A) through (D). 2 No. 118 (A) Permitted. Jul 5, 2019 · i. 184 or 250. 24 (A). Jan 13, 2020 · 250. One “reason” for not wanting Y-grounded service is that NEC 230-95 ground-fault protection is required, and that costs a bit more money. bonding C. 52 Mar 18, 2024 · a) equipment grounding. 16 (d) 430. 4. Term. This is why the grounding conductor is also called a case Sep 27, 2023 · An exception establishes the non-requirement of connecting the equipment grounding conductor permitted in Section 250. Feb 28, 2021 · Services Scope. This test can be accomplished with various Jul 1, 2021 · In a solidly grounded system, a grounding conductor must be connected only to a grounded service conductor (to a neutral conductor brought to the service equipment from the solidly grounded power supply source). Is that permissible OR should I add a ground conductor to each conduit. Some grounded conductors are also neutral conductors. Informational Note: See Figure 230. 0. A. [250. 3. 24(C) Grounded Conductor Brought to Service Equipment. Go To Full Code Chapter. 500 kemi D. 24 (C) Grounded Conductor Brought to Service Equipment. "The Grounded Conductor shall not be less than the Minimum Size as required by Section 250. 2 AWG conductor. The grounded conductor (s) shall be installed in accordance with 250. Where equipment grounding conductors (EGCs) are installed for parallel feeders, the NEC seems to contradict itself repeatedly. Sizing grounded conductors The NEC provides the specifications for working space around electrical equipment in Article __________. MikeHolt. 250-32(f). The grounded conductor brought to service equipment shall be routed with the phase conductors and shall not be smaller than specified in Table _____ when the service-entrance conductors are not larger than 1100 kcmil copper. 5(I), 250. , Alternating-current systems of 50V to 1,000V that supply premises wiring systems shall be grounded where the system is three-phase Aug 2, 2023 · Section 250. 8 and 250. 250-24(b)(1) and Table 250-66. 24(C)], you don’t have to install an equipment grounding conductor within PVC conduit containing service-entrance conductors [250. Electrical Engineering questions and answers. Where an ac system operating at less than 1000 volts is grounded at any point, the grounded conductor(s) shall be run to each service disconnecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus. False. 23 is Subsection 230. High-impedance grounded neutral system connections shall be made as covered in 2. , Equipment grounding conductors, grounding electrode conductors, and bonding jumpers shall be connected by _____. Exception No. The size of the grounded conductor in each raceway shall be based on the total circular mil area of the parallel ungrounded conductors in the raceway, as indicated in 250. The neutral bar is bonded (connected) to the service equipment enclosure through a main bonding jumper which in turn creates an effective ground-fault current path for the Separately Derived System. The main bonding jumper d. Nov 21, 2017 · Let’s start with the neutral conductor. 64(B)(2) and (B)(3) – Grounding Electrode Conductor Protection from Physical Damage 250. com/bonding. 1. (B) Systems Without a Grounded Conductor at the Service Point. 24(C)(1)&(2) Grounded Conductor Brought to Service Equipment. Where an ac system operating at 1000 volts or less is grounded at any point, the grounded conductor(s) shall be routed with the ungrounded conductors to each service dis-connecting means and shall be connected to each disconnecting means grounded conductor(s) terminal or bus. May 14, 2024 · Section 250. Size the grounding conductor according to Table 250-122, and install in accordance with Secs. 7 of 43. 5. 28. A) Bus B) Conductor C) Electrode Jul 16, 2013 · The answer could be found in Rule 10-204 (2) of the CE Code. There is ample discussion at this site. 24(D) further clarifies that “a grounding electrode conductor be used to connect the equipment grounding conductors, the service equipment enclosures and the May 1, 2021 · 4. 146(D) to the rest of the equipment grounding conductors or the box. The neutral carries the unbalanced load back to the source. 4. At the end of Section 230. (1) Ground-fault protection of equipment is not installed. If the latter, and given that this is a service, my inclination would be to go with a 3/0 bare copper ground conductor in accordance with Table 310. Jul 26, 2018. A main bonding jumper shall connect the grounded Sep 27, 2021 · The GEC, at the building or structure’s service, is terminated on the neutral bar within the electrical service equipment alongside the grounded (neutral) conductor. 102(E), and 300. , A(n) ? is the connection between two or more portions of the equipment grounding conductor. 1: The frames of ranges, wall-mounted ovens, counter -mounted cooking units, and clothes dryers under the conditions permitted for existing installations by 250. Surge Protection Devices (SPD) (formerly called TVSS) 1. The nuetral conductor, A grounding fault is described as an unintentional _____. Dec 9, 2020 · The main bonding jumper shall connect the grounded conductor to equipment-grounding conductors and the service entrance enclosure via the grounded conductor’s terminal or bus. A (n) ? is a premises wiring system where power is derived from a source of electric energy or equipment other than a service. Equipment and Safety Grounding. grounding B. #5. 24(A)(5) restricts load-side grounding connections to the grounded conductor. The grounded conductor, if insulated, shall have insulation that is (1) suitable, other than color, for any ungrounded conductor of the same circuit for systems of 1000 volts or less, or impedance grounded neutral systems of over 1000 volts, or (2) rated not less than 600 volts for solidly grounded Jan 11, 2022 · Section 250. For service entrance conductors larger than 1,100 kcmil copper or 1,750 kcmil aluminum, you must size the grounded conductor at least 121/2% of the area of the largest ungrounded phase conductor. The following A grounding electrode conductor shall be used to connect the equipment grounding conductors, the service-equipment enclosures, and, where the system is grounded, the grounded service conductor to the grounding electrode(s) required by Part 2. 122 (C) Grounded Conductor Brought to Service Equipment. 122. L1 = 112A, L2 = 110A, and L3 = 106A. Part I. 24(E) states that the GEC is used to connect the EGC, the service enclosure(s)and, if used, the system grounded conductor to the grounding electrode system required later in Article 250. bonded neutral service equipment. 4 have mandatory application. In an electrical system, each of the service entrance conductors has an area of 750 kcmil. d) bonding . Jul 24, 2023 · 2. If you only have a three wire system then one of those conductors is the grounded conductor or you have an ungrounded system. A connection between the one or more equipment grounding conductors brought into a nonmetallic outlet box shall be so arranged that a connection of the equipment grounding conductor can be made to any fitting or device in that box that requires grounding. Each other b. Sep 10, 2023 · Equipment grounding conductor connections in grounded systems. Equipment grounding conductors are the effective ground-fault current path at the feeder and branch circuit levels of the Study with Quizlet and memorize flashcards containing terms like Equipment grounding refers to connecting the normally noncurrent carrying metal parts of equipment to the system grounded conductor and/or _____. Grounded Conductor Brought to Service Equipment. When installed in a single raceway, the grounded conductor cannot be smaller than the grounding electrode conductor selected from Nov 14, 2023 · The subject of this question pertains to electrical engineering, more specifically to the concept of grounding and parallel circuits. suitable for use as service equipment. The grounded conductor brought to service equipment must be routed with the phase conductors and should not be smaller than specified in Table 250. Location ― A grounding electrode conductor must connect the service neutral conductor to the grounding electrode at any accessible location, from the load end of the overhead May 2, 2022 · A grounding conductor is defined as a wire or conductor intentionally connected to the earth. Its function is to keep your equipment as close as possible to ground potential and provide a safe path for ground-fault current to flow. a. Jun 10, 2003 · Ungrounded 480V distribution has been known for serious ground-overvoltage problems for close to 50 years. none of these, A conductor installed on the supply side of a service or within a service equipment enclosure, or for a separately derived system, to ensure the required electrical conductivity between metal parts required to be electrically connected is known as the "_____" A. Grounding and Bonding, Level 2 Lesson 3. EGCs VS. Is a grounding conductor allowed to be connected to the metal non-current carrying enclosure of the service equipment? In a solidly grounded system, a grounding conductor must be connected only to a grounded service conductor (to a neutral conductor brought to the service equipment from the solidly grounded power supply source). 24(C) Grounded Conductor Brought to Service Equipment • Where an ac system operating at less than 1000 volts is grounded at any point, the grounded conductor(s) shall be run to each service disconnecting means and shall be bonded to each disconnecting means enclosure. Dec 18, 2019 · Dec 18, 2019. The branch circuit wiring method shall include or provide an equipment grounding conductor to which the grounding contacts of the receptacle or cord connector shall be connected. 148(A) through (D) (A) Connections and Splices. Explore a searchable database of US construction and building code. Oct 11, 2006 · The grounding electrode conductor and grounding electrode tap must comply with (a) through (c). Summation of Grounding and Bonding. c) 310. It’s not just another “ground conductor. , within or ahead of the enclosure. 134(B), 250. 42 (C) Grounded Conductors. Apr 6, 2016 · But 250. 26. Where an ac system operating at 1000 volts or less is grounded at any point, the grounded conductor (s) shall be routed with the ungrounded conductors to each service disconnecting means and shall be connected to each disconnecting means grounded Grounded conductor routing The grounded conductor per Section 250. Some verbiage changes have taken place with regards to this article concerning the grounded conductor. 102(C)(1) b) 250. The general rule of routing circuits is outlined in NEC Sections 300. 24 (C) (1), but This restriction applies on the load side of the grounding point at the service equipment, or the point where the main bonding jumper connection is made in the service equipment. 122 (F), a brief review of the rules in 300. Here, 112A requires a No. [29 CFR 1926. Such systems have no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system. 24 (C). 20 B. Step 2: Calculate the maximum unbalanced load. Dec 1, 1999 · You can determine the neutral conductor size by: Step 1: Determine the load on each phase conductor. Q2: The grounded conductor brought to service equipment shall be routed with the phase conductors and shall not be smaller than specified in Table _____ when the service-entrance conductors are 1,100kcmil copper and smaller. The grounded conductor on a service that is grounded at any point must be brought to the service disconnect (s) {250. Sep 18, 2020 · One of your goals as you are installing or designing an installation is to NOT ever have current on your equipment grounding conductor. 66. ( iv) Replacement of receptacles shall comply with the following requirements: ( A) Where a grounding means exists in the receptacle enclosure or a grounding conductor 27. 3(B), 300. Table 250. c) equipment bonding. Switchboards marked as “for use only as service equipment” bring the neutral busbar factory-bonded to the enclosure. Jan 1, 2000 · To satisfy this rule, you must size the grounded neutral conductor as large as the grounding electrode conductor, per Sec. In electrical installations, the EGC is a conductor that connects the non-current-carrying metal parts of equipment, raceways, and other enclosures to the system’s grounding electrode or electrodes. As an example, take a 480V, 3-phase, 4-wire, 2000 Apr 10, 2023 · In a solidly grounded system, a grounding conductor must be connected only to a grounded service conductor (to a neutral conductor brought to the service equipment from the solidly grounded power supply source). A Feb 26, 2024 · 5. Equipment grounding conductors are required to be run with circuit conductors. I gather they are relying on the shield for grounding. 250-92, 260-64(a) and (b), and 250-120(a). 230. 30(A)(1)] is a wire or bus bar, the grounding electrode tap can terminate to the equipment grounding terminal, bar, or bus on the metal enclosure of the separately derived system. The Equipment Grounding Conductor (EGC) plays a crucial role in ensuring electrical safety within a system. The GEC shall be used to connect the EGCs, the service equipment enclosures and where the system is grounded, the grounded service conductor to the grounding electrodes. 66 and Table 250. (a) 250. 230-66). 404(b)(1)(iii)(D)] Perform this test on all cord sets, receptacles that are not part of a building or structure's permanent wiring, and cord- and plug-connected equipment required to be grounded. A main bonding jumper is the connection between the grounded conductor and the equipment grounding conductor and is located at a separately derived system. A Neutral Conductor is defined as the Aug 7, 2020 · But, the main bonding jumper, one of the most critical elements in the grounding system, connects the equipment grounding conductor, the service grounded conductor, and the grounding electrode conductor at the service, closing the fault circuit. Rule 10-204 (2) “ Where the system is grounded at any point, the grounded conductor shall: (a) be run to each individual service; (b) have a minimum size as specified for bonding conductors in Table 16; (c) also comply with Rule 4-024 where it serves as the neutral”; This Code The type of grounding electrode 15. Make the connection on the supply side of the service disconnecting means, i. The grounding conductor is commonly known as a “ground conductor” or “case ground. STEP 2. What is the correct approach. 3 (B) and 250. 250. 186 (A) (1) through (A) (4). Grounding is a process whereby a conductor can be fixed at zero volts by connecting it to the earth with a good conductor. 64(A) – Grounding Electrode Conductor Installation in Aluminum or Copper-Clad Aluminum Conductors 250. This article covers service conductors and equip‐ ment for control and protection of services and their installa‐ tion requirements. To develop an understanding of the requirements in 310. If there is a ground fault on a feeder or branch circuit, the fault current will be carried on the EGC back to the service, then onto the main bonding jumper to the grounded conductor going back to the utilities. Exception: If two or more service disconnecting means are located in a single assembly listed for use as service equipment, it shall be permitted to connect the grounded conductor (s) to the assembly common grounded conductor (s) terminal or bus. Calculate the cross-sectional area of the upsized equipment grounding conductor by multiplying the size ration times the cross sectional area of the standard size equipment grounding conductor taken from Table 250. That conductor is required to be a minimum size of 8 AWG copper and need not be larger than 3/0 AWG copper. Figure 7. Aug 9, 2017 · 250. L1 = 112A. GeneralNumber of Services. This service only supplied 3-phase industrial loads that did not use a grounded neutral conductor. Section 250. Grounding is not done in order to clear ground-faults. Image used courtesy of Lorenzo Mari . A main bonding jumper shall Mar 16, 2008 · Wire-type equipment grounding conductors must be sized according to the minimum values in 250. Service equipment supplied from a grounded system must have the grounding electrode conductor (GEC) terminate in accordance with the requirements of Sec. application must be at least 6. Study with Quizlet and memorize flashcards containing terms like A ? is a conductor installed on the supply side of a service or separately derived system to ensure the required electrical conductivity between metal parts required to be electrically connected. Before you can understand the grounding of an electrical service and equipment, you’l Jun 6, 2018 · NEC Article 250. Connect all equipment grounding conductors spliced or terminated within the box. Where an ac system operating at greater than 1000 Sep 1, 2001 · Service equipment does not include the metering equipment, such as the meter and/or meter enclosures (Sec. Code Change Summary: Clarifications were made to NEC ® Table 250. Overhead Service-Drop Conductors, then slide down to Section 230. 24 (C)} and sized per 250. A main bonding Grounding Electrode System. Scanning through 250. A main bonding jumper shall be a bus or similar suitable conductor. 40, Exception No. 9(c) in standard C22. 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