ITB: EMS # 3 Generator Replacement (Rebid)

Description

Project: EMS STATION # 3 Standby Emergency Generator Installation Specifications Demo existing 200 amp meter base, and wiring through wall to existing 200 amp main panel. Patch holes in exterior wall, and seal hole in back of exiting Panel A. Remove Utility PVC conduit to below grade and transition to Rigid galvanized conduit to New Meter Main Combination Panel above grade. Demo existing generator and turn over to owner Demo existing generator pad. . Demo existing Generac automatic transfer switch and turn over to owner. Remove generator cable along wall and patch holes in wall. Interior, and exterior. Label and save circuitry from Generac automatic transfer switch, and rework circuits to new sub panel B. Install New 120/240V single phase, 3 wire, service entrance rated, 200amp Meter/Main Breaker Combination Panel with 3/0 feed through lugs to feed new Automatic Transfer Switch. (Include two 20 amp single pole circuit breakers for generator engine block heater, and battery charger, and 4 blank spaces for future exterior equipment) Install two new ground rods, and new bare # 6 copper grounding electrode conductor if existing can’t be located. Install New 200 amp 120/240V single phase Nema 3R Automatic Transfer Switch (ATS) along side New Service Meter Main Combination panel. Install 2” rigid conduit nipple with Meyers hub with bonding bushing between Meter Main and Automatic Transfer Switch. Install 3 # 3/0 thhn copper conductors, and 1 # 6 green copper conductor. Install 1” conduit with 8 # 14s with ground from Automatic Transfer Switch to Generator for controls and signal conductors Install 1” conduit from Main Meter Combination panel with 4 # 12 thhn conductors with 1 # 12 green thhn equipment grounding conductor. (One block heater circuit, and one battery Charger Circuit.) Install 2” rigid conduit with Meyers hubs and 3 # 3/0 thhn copper conductors, and 1 # 6 green copper grounding conductor from New Automatic Transfer switch to existing 200amp Main Panel A. Use aluminum LBs to penetrate Wall. No PVC conduit or fittings will be accepted. In existing 200amp Main Panel A separate grounding conductors, (Neutral) grounded conductors, and remove bond between ground and neutral as it is now a sub panel. Install ground bar if necessary for separation of conductors.