250.122 Necテーブル | boxless.info

NEC 2008: Table 250.122 Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equipment, Conduit, etc., Not Exceeding. NEC 2014: Table 250.122 Min Size Equipment Grounding Conductors Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equip, Conduit, etc., Not Exceeding Amps Size AWG or kcmil Copper Aluminum 15. NEC Table 250.122, Grounding Conductor Size Conduit. site Mathematical and electrical tools, calculators, and references Conduit Calculator NEC Tables Repeating Decimal to Fraction Feedback Table 250.122 — Grounding. NEC® Article 250: Grounding and Bonding Table 250.66 Table 250.122 Part III: Grounding Electrode System Utility Transformer Service Conductor Service Disconnect Feeder Branch Circuit Sub-Panel Main Bonding Jumper 250.102C. The majority of the rules for parallel conductors are found in 310.10H and additional rules pertaining to installing equipment grounding conductors in parallel are located in 250.122F. In the 2017 NEC.

Article 250 is the largest article in the NEC and yet for years, the article has only had the following two tables: Table 250.66 for sizing grounding electrode conductors of alternating-current systems. Table 250.122 for sizing. 2016/11/03 · NEC requires to size the EGC by using Table 250.122 as indicated in Section 250.122A, and add requirements to comply with sections 250.4A5 or B4 for voltage drop consideration and to provide a return path for fault current.

I may have this wrong, but I believe you should be in 250.66, not 250.122, for this situation. From the secondary terminals to the first disconnecting means, you are not dealing with equipment grounding. At that disconnecting means. 2017/01/11 · 2017 NEC - Sizing Equipment Grounding Conductor [250.122], 3min:49sec MikeHoltNEC Loading. Unsubscribe from MikeHoltNEC? Cancel Unsubscribe Working. Subscribe Subscribed Unsubscribe 48.2K Loading. NEC 250.122 Calculations A Equipment Grounding Conductor By: Aisha Bajwa - Field Application Engineer, Alcan Cable Alcan Cable Three Ravinia Drive, Suite 1600, Atlanta, GA 30346 Tel 770 394-9886 Toll Free 800 347-0571.

Supply-Side grounded and bonding conductors are sized from Table 250.102C1 in the 2014 NEC. In earlier Codes, all these conductors, as well as the Grounding Electrode Conductor, were selected from Table 250.66. Table 250.

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