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Permit Review Detail

Permit Number: T18CM06804
Parcel: 10701040B

Review Status: Completed

Review Details: COMMERCIAL - TI

Permit Number - T18CM06804
Review Name: COMMERCIAL - TI
Review Status: Completed
Review Date Reviewer's Name Type of Review Description Status Comments
09/10/2018 DAN SANTA CRUZ ELECTRICAL-COMMERCIAL REVIEW Reqs Change Please address the electrical plan review comments from this 2nd plan review. Also provide a written response.
Ref; Revised Plan Sheet E4.0.
#1. Comment (a) was to include neutrals with the feeders for the new 400 amp service. NEC 250.24. The Keyed note #11 is incorrect.
Per the revised drawing E4.0, the neutrals are not continuous to the utility supply source. Without these neutrals, Panel 'DP1' will not operate properly as a 3 phase 4- wire panel. Also there is no low impedance path for fault current back to the electrical supply source. Verify that Keyed note #9 is correct. Without grounded conductors (neutrals) installed with the secondary's, the AC system will not operate as designed. Please see NEC 250.2.
#2. Comment (e) was to provide a fused disconnect to protect the derived transformer feeders to panel 'LP1A' . The fused disconnect should be on the secondary side of the transformer.NEC 240.15, 240.21, 450.14.
Ref; 2012 IBC section 107.2.1, 2011 NEC City of Tucson Commercial Plan Review Requirements.
Dan Santa Cruz
Commercial Electrical Plan Review, City of Tucson
Dan.santacruz@tucsonaz.gov
520-837-4995