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15 de mar. de 2023 · In summary, NEC Sec. 250.8 requires one of eight methods to make grounding and bonding connections. Different listed connectors are available to splice and terminate grounding and bonding conductors. Electrical workers must properly apply each of these components per manufacturers’ instructions. Knowing what connectors are available ...
21 de jun. de 2011 · Bonding conductors and jumpers. The 2011 revision helps distinguish between the rules for bonding jumpers upstream from an overcurrent device versus bonding jumpers downstream from an overcurrent device. The NEC now clarifies that bonding jumpers on the load side of an overcurrent device must comply with all of Sec. 250.122, not just Table 250.122.
Code Change Summary: Revised code language on main bonding jumper material. In the 2020 NEC ®, main bonding jumpers are now permitted to be made of aluminum and copper-clad aluminum.Technically, the materials weren’t prohibited before, but they weren’t specifically mentioned either, except in Table 250.102(C)(1) which specifies the minimum size main bonding jumper permitted based on the ...
BONDING JUMPER (접지선) 1. 정의. 편조선 양 끝에 구리단자 (TERMINAL LUG)를 결합하여 배전반이나 케이블 트레이 접지용으로 주로 사용됝다. 접지선은 대지의 접지극과 연결된 선을 말한다. 부하에 전류를 공급하지 않고 대지와 등전위를 목적으로 하고 있으며 정상적인 ...
Bonding Jumper, Main. Article 100. Bonding Jumper, Main. The main bonding jumper connects the grounded circuit conductor to the equipment grounding conductor, or the supply-side bonding jumper, or both, at the service. Main bonding jumpers are sized from NEC ® Table 250.102 (C) (1) which is also used to size grounded conductors, system bonding ...
15 de jul. de 2019 · Bonding at Services. NEC Section 250.92(B) is applicable to bonding at services, and in part states, “Bonding jumpers meeting the other requirements of this article [Article 250] shall be used around concentric or eccentric knockouts that are punched or otherwise formed so as to impair the electrical connection to ground.”
28 de nov. de 2022 · This section requires an unspliced main bonding jumper connecting–inside the enclosure–the grounded service conductor, the equipment grounding conductor(s), and the service-disconnect enclosure for each service disconnect. See Figure 5. The main bonding jumpers are sized by 250.28(D)(1) through 250.28(D)(3). Figure 5. Main bonding jumper.
