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Park Annex Building- Electrical BidReplacement of Electrical PanelExisting Federal Pacific panel shall be replaced in place.? Provide a new 120/240V, 1-phase, 3-wire branch circuit panelboard rated at minimum 125 Amps with 42 spaces by “Square D” or “Eaton” Pow-R-Line.? Provide plastic bolt on panel nameplate with white background and black lettering indicating the voltage, phase and wire configuration.? Install new panel in place.? Rework and reconnect all existing branch circuits, conduits, disconnects, wire-ways…etc. as required.? Circuit breakers shall be bolt on, molded case type and shall have quick-make and quick-break toggle mechanism with inverse-time characteristics, and shall be trip-free on overload or short circuit.? Provide the following circuit breakers to replace existing and reconnect existing circuits to the appropriate circuit breaker:(14) 20A, 1-P(5) 15A, 1-P(4) 30A, 1-P(1) 20A, 2-P(1) 40A, 2-P(2) 20A, 1-P (SPARES)(1) 20A, 2-P (SPARES)SECTION 26?2416PANELBOARDSPART 1 - GENERAL1.01RELATED DOCUMENTSDrawings and general provisions of Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.1.02SUMMARYThe work included under this section of these specifications consist of the furnishing of all material and equipment and in the performing of all labor and services necessary for the complete installation of electrical panelboards and accessories for the building, all as shown on the drawings and hereinafter specified.PART 2 - PRODUCTS2.01FABRICATION – LIGHTING AND APPLIANCE PANELBOARDSA.The panelboards shall be of the dead-front type and shall be in accordance with Underwriters' Laboratories, Inc. standard for panelboards and enclosure cabinets, and so labeled.B.Panelboards shall be designed for connection to the voltage indicated, and service connection made at the top or bottom as indicated on the plans. The neutral bar (solid neutral) shall be mounted in the wireway gutter for connection of neutral wires. Where applicable, the panelboard shall meet requirements of and be marked as suitable for service entrance rated.C.Each panelboard box shall be fabricated from galvanized sheet steel. A turned edge shall be provided around the front of the box for rigidity and attachment of the front. Wiring gutters shall be in accordance with the National Electrical Code.D.Each panelboard front shall feature “door-in-door” construction consisting of a flat piece of sheet steel, with an opening to which each panelboard door is attached by means of semi-concealed hinges. The doors shall have a cylinder tumbler type lock. On doors more than 48" high a combination three-point catch and lock shall be provided. A framed circuit directory shall be provided on the inside of the door. Plastic stick-on covers are not acceptable. Circuit breakers shall be consecutively numbered left to right for entire panelboard. Locks to all doors shall be keyed alike. Fronts shall be finished in gray enamel over a rust inhibitor, and shall be designed for flush or surface mounting as indicated on the plans.E.Interiors shall be of the unit type, mounted on a back plate, properly reinforced by flanging providing a rigid assembly to protect against damage during handling or installation. Structures shall be so designed that units may be easily removed without disturbing adjacent units, bus structure, or insulation. A removable dead-front shield shall be provided for easy access to the wiring. Panel busing shall be arranged to maintain sequence phasing throughout, that is, adjacent poles shall be on unlike polarity and rotated in sequence.F.Enclosure type shall be of the NEMA type required to meet the application and environmental conditions in which installed. Refer to drawings for specific requirements.2.02LIGHTING AND APPLIANCE PANELBOARDSA.Approved manufacturers for branch circuit panelboards shall be "Square D” or “Eaton” Pow-R-Line.B.For circuits 15 amp and larger, “bolt-on” type only circuit breakers shall be used. Breakers shall be assembled into a single interior unit which shall be mounted in a painted sheet-steel enclosure consisting of a box and front designed to be placed in or against a wall or partition.C.The mains of each panelboard shall have copper bus and be provided with main lugs only, or a main circuit breaker as indicated on the plans, and with solderless lugs. Mains shall not be smaller than 100 amperes or larger than 400 amperes. All ratings shall be based on continuous load. All panelboards shall have a copper insulated equipment ground bar.D.Branch circuit-protective devices shall be of the molded case circuit breaker type consisting of the number of poles, ampere ratings, and interrupting rating as listed on the drawings. Series type ratings shall not be allowed. All breakers shall be fully rated.E.The breakers shall have quick-make and quick-break toggle mechanism inverse-time characteristics, and shall be trip-free on overload or short circuit. Automatic release is to be secured by a bimetallic thermal element, releasing the mechanism latch. In addition, a magnetic armature shall be provided to trip the breaker instantaneously for short-circuit currents above the overload range. Automatic tripping shall be indicated by handle position between manual OFF and ON position.F.Multiple-pole branch circuit breakers shall be common-trip type. Breakers used for air conditioning equipment shall have HACR rating.G.The individual breakers shall be calibrated and sealed to eliminate tampering or unauthorized changes in calibration. Breakers shall be interchangeable and capable of being operated in any position.PART 3 - EXECUTION3.01INSTALLATIONA.Install panelboards in location indicated on the plans. Verify exact location before installation. The Architect reserves the right to move any panelboard a maximum distance of 8' if required to prevent interference with other systems. 3.02LOAD BALANCEA.Contractor shall check all panel loads after project is essentially complete. Phase loads should not vary by more than ten percent (10%). Where phase load balance exceeds ten percent, Contractor shall change circuits from the high load phase to the low load phase as required to obtain an acceptable phase load balance. When rebalance is required, Contractor shall revise the panel schedule sheet to reflect correct circuit numbers.END OF SECTION ................
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