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Rebar shall have min. 2 ' overlap

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Rebar shall have min. 2 ' overlap

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  1. The City of Lenexa requires a Ufer ground (NEC 250.52 (3) Concrete-encased electrode) with no smaller than a 4 AWG bare copper conductor connected to a rebar that is bent up out of the footing. This rebar shall be connected to one or more bars tied together within the footing to provide a minimum of 20 feet of continuous direct contact with the earth. This Ufer ground is in addition to all other electrodes within the building being bonded together to form the grounding electrode system. The GEC shall be protected from physical damage. 4 AWG bare copper (protected) Foundation Wall Rebar shall stay encased in concrete from footing thru floor Rebar shall have min. 2' overlap Footing Rebar Elevation Section

  2. This is the scenario for the following question 3 – 200 Amp Disconnects 600 Amp Service 200 A 200 A 200 A 600 A EMT bonded at both ends with a bonding bushing on one of the three No. 4 GEC’s Each disconnect is grounded separately with a No. 4 GEC run through a common EMT which is bonded at each end with a bonding bushing to one of the three No. 4’s. Q. Does the code require only one of the three wires to be bonded or do all three GEC’s need to be bonded to the EMT since we don’t know which one will be carrying the fault current? Water line ground

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