2-4c - MPL-25-013 Appendix 3 FFS Electrical Systems.pdf

Appendix 6 Milwaukee Public Library – Martin Luther King Branch

Electrical Systems

1. General Conditions

a) Overview

i) This appendix presents the Library’s minimum requirements and standards for the concept development, design and construction of their building electrical systems.

ii) The Library will provide direction to the design team regarding the need for a feasibility study for system configuration selection. Selection criteria will vary depending on the specifics of the particular project.

iii) The Library will also consider alternative energy systems that could be candidates for a particular project.

b) Administration

i) Consultant shall coordinate with utility representative and develop new or renovated service design with the respective utility. Utilities include electricity, data and communication as necessary.

ii) Permits and other associated fees required by the authority having jurisdiction and the State of Wisconsin shall be secured and paid for by Contractor.

iii) All work shall be performed within an industry-acknowledged standard of care, using only new quality materials.

iv) All equipment quantities and capacities shall be determined based on latest available program information and historical square foot values, and are subject to change following final building program, floor plan layout, and subsequent building load calculations.

v) Contractor shall guarantee the entire installation for a period of one year after acceptance.

Repair or replacement of faulty equipment shall be done with no cost to the Library.

2. Codes and Standards

a) All work shall be done in accordance with all applicable local, State and Federal codes.

b) Comply with all applicable OSHA regulations

c) All material shall be new and shall bear a U.L. label where a U.L. standard and /or test exists or other nationally recognized testing standard recognized.

d) Prepare and submit to all authorities having jurisdiction, for their approval, all applications and working drawings required by them. Secure and pay for all permits and licenses required.

e) The following codes, standards, and guidelines will be used for the design as applicable or as directed by the authorities having jurisdictions:

i) Wisconsin Administrative Code, Department of Safety and Professional Service, SPS

Chapter 305 Licenses, Certifications and Registrations, SPS chapter 316 Electrical, SPS chapter SPS 363 Energy Conservation, Chapter SPS 371 Solar System, when applicable and Chapter SPS 376 Factories, Office and Mercantile Buildings (built before 1914), when applicable.

ii) NFPA standards as referenced in the Wisconsin Administrative Code

iii) 2009 IBC as referenced in the Wisconsin Administrative Code

iv) TIA/EIA Standards 526-14A (OFSPT-14A), 526-7 (OFSPT-7), 568B.1 (Category 6), 568B.2

(Category 6), 568B.3, 569A, 606A, and 607 (with exception)

v) IEEE/ANSI 142-1982-Recommended Practice for Grounding of Industrial and Commercial

Power Systems.

vi) ICEA publication S-80-576-2002

f) The codes, standards and guidelines listed indicate recommended or minimum requirements.

Based on input from the Library representatives and recommendations from the consultant, minimum requirements or standards may be exceeded.

3. Electrical Project Scope

a) All work associated with the Library building project including, electrical service, distribution, main power panel, power panels, conductors, conduits, electrical equipment, connections for a complete operating system.

b) Telephone system data cable, raceway, back boxes to serve voice, polyphone, fax devices.

Telephone system desk/wall consoles and head end equipment is provided by City of Milwaukee ITMD department.

c) Data system shall include raceways/cable trays, cable, back boxes, data face plates, floor boxes for all data ports and data devices. The data closet shall be fitted with rack frames sufficient capacity for PoE switches, , patch panels, servers, public address equipment and security controls.

d) Integration systems

i) JCI P2000 security network connection provided by the Library

ii) Access system shall include raceways, back boxes, conductors controllers, network connections, termination, card readers, door strikes, magnetic locks, request to exit devices for a complete operating system.

iii) Intrusion system shall include raceways, back boxes, conductors, controllers, network connections, motion sensors and door contacts for a complete system.

iv) Surveillance system shall include raceways, cable, back boxes, interior cameras, exterior cameras, network video recorder, ExacqVision camera subscriptions and ExacqVision Enterprise license for a complete operating system.

(1) Camera brands shall be AXIS

4. Demolition

a) All existing material and equipment required for demolition shall be completely removed from site.

b) The Library shall have the right to keep any material and equipment when requested by the

Library.

5. Service and Distribution Scope

a) Provide:

i) New service

ii) Main disconnect panel and switches

iii) Power panels

iv) Lighting Control panels, BACnet capable

v) Sub metering

(1) Lighting,

(2) HVAC

(3) Plug circuits

vi) Branch low voltage distribution including raceways, back boxes, floor boxes, conductors and terminal devices

vii) All raceways embedded in concrete shall be schedule 80 PVC rigid pipe and subjected to air pressure during concrete placement to ensure conduit integrity

b) System voltages, typical

i) Motors ½ hp or greater 208V, 3 phase

ii) Receptacles and motors 1/3 HP or less 120V.

c) General convenience duplex receptacles locations and quantities

i) Mechanical spaces: receptacles spread throughout for maintenance purposes

ii) Outdoor

(1) one receptacle at each mechanical unit

(2) building perimeter every 50’ of building perimeter on dedicated circuit

(3) site light poles 15’ above finished grade on dedicated circuit, when applicable

(4) EV charging stations should be considered or site should be roughed in for future locations.

d) Other power requirements

i) Integration systems control panels and devices

ii) Building automation system controllers

e) Motor controls

i) Variable frequency drives with bypass on circulator pumps and air handling units

6. Lighting systems

a) LED lamps

b) Lighting control panels, BACnet capable for communication and programing with Library building automation system

c) Parking lot light fixtures shall include cut offs to minimize wash and glare to surrounding areas

7. Fire Systems Scope

a) Fire Alarm System

i) Complete design

(1) Drawings show location of each notification appliance, smoke detection and heat detection, ratings of each device and installation details as needed to comply with listing conditions of the device

(2) Design calculations include requirements for selecting the spacing and sensitivity of detection complying with NFPA 72. Calculate spacing and intensities for strobe signals and sound-pressure levels for audible appliances.

(3) Indicate audible appliances required to produce square wave signal per NFPA 72.

ii) Provide all close out submittals, record drawings and acceptance testing

iii) Use of Devices during construction: Protect devices during construction unless devices are placed in service to protect the project during construction

iv) Fire Alarm System components shall be Johnson Controls sourced and may be integrated with security systems. The system devices shall be U.L. listed. Provide system manufacturer’s certification that all components provided have been tested and will operate as a system.

v) All signaling devices shall be red

vi) The Fire Alarm and Detection system will be designed to meet NFPA and the State of

Wisconsin Administrative codes.

8. Voice/Data/Surveillance Systems

a) Cable shall be CAT 6 and color coded distinct to each system

b) Provide wall plates/trim and ports

c) Size conduits to provide 25% additional capacity

d) Route all cables to termination location in data room/closet, typical

e) Cable terminations shall be clearly labeled according to single sequential naming convention.

9. Basic Materials and Methods

a) Equipment support: Provide support of all electrical work through the use of hanger rods, clamps, structural framing, fastening devices and backboards. Provide vibration isolation in all supporting hardware for vibrating electrical equipment. Provide 4” high concrete pads for floor mounted equipment.

b) Identification: Provide engraved nameplates, wire and cable markers, embossed tape and device plate cover engraving on electrical distribution and control equipment and the loads they serve, main power and special system cabinets, motor control centers, variable frequency drives and disconnects

c) Underground installations

i) Provide marker tape

ii) All conductors shall be in raceways to facilitate conductor replacement

iii) Provide link seal/concrete encased water stops at conduit foundation penetrations subject to permanent or temporary high ground water conditions

d) Raceway systems

i) Conduits: Rigid steel, IMC, EMT, Flexible steel and Liquid-tight, and PVC conduits will be used with the approved insulated throat fittings. Provide complete raceway systems including outlet boxes, floor boxes, pull boxes and fittings. Conceal conduits in finished spaces. Group conduits on racks leaving 25% conduit space and suspend from the structure. Size conduits, boxes and bends per the NEC. Provide expansion fittings, conduit seals, drain tees, conduit hubs, fire/smoke barriers where required. Metal conduits shall have continuous grounding integrity

(1) Schedule 80 PVC will be used for feeders running below the slab, in the slab and exposed outdoors

(2) EMT/IMC will be used for interior feeders and branch circuits

(3) Flexible steel or Liquid tight will be used for connection to motors and transformers

(4) Interior Fire Alarm System metallic conduit shall be complete and factory pre-finished

RED to facilitate future system tracing and maintenance.

(5) Interior communication system conduit stubs shall be factory pre-finished BLUE to facilitate future system tracing and maintenance.

(6) Provide acoustical sleeve seal assemblies through mechanical room penetrations subject to Library approval.

ii) Wire and Cable: Branch circuit conductors shall be THWN/THHN solid copper through #12 and stranded copper #8 and larger. Minimum wire size is #12. Conduit fill shall conform to NEC table 3. All conductors shall be in raceways with color coded insulation and each voltage system shall be separately identified. A green ground conductor will be installed in each feeder and branch circuit.

iii) Provide a separate neutral conductor for all 120/208 volt branch circuits.

e) Boxes and Cabinets

i) Pull & Junction Boxes: Indoor boxes shall be NEMA 1, constructed of single piece code gauge steel, with folded and welded corners, complete with flat removable screw down cover.

Outdoor boxes utilizing rigid metal conduit shall be cast iron with cast iron cover with gasket held down with stainless steel screws lubricated with anti-seize compound. Outdoor boxes utilizing PVC conduit shall be plastic with cover, gasket and stainless steel screws. Size all boxes per NEC article 370. Provide boxes to comply with code and to provide ease of conductor installation.

ii) Outlet boxes and Fittings: Interior outlet boxes shall be galvanized steel, with knockouts and covers or extension rings as required. Ganged assemblies not permitted. Exterior surface outlet boxes shall be cast iron allow with threaded hubs and screw down WP covers with gaskets.

iii) Cabinets: Cabinets shall be constructed of code gauge steel without factory knockouts, surface or flush mounted and shall appear as a panel board with a hinged and latched door.

Provide barriers to separate low voltage and power wiring is required.

iv) Floor boxes shall be flush type with port/outlet access door and cable openings. Minimum specification is Legrand brand, FloorPort Series, FP series for floor finish specified by the interior designer.

f) Devices and cover plates

i) Switches shall be heavy duty specification grade, 20 amp, 120/277 volt, quiet toggle, momentary contact, pilot type or illuminated toggle. Provide single pole, double pole, 3-way, 4-way or SPDT as required similar to Hubbell 1221 series.

ii) Receptacles shall be heavy-duty industrial grade, duplex or single outlet, voltage, and NEMA configuration as required. Provide GFI receptacles as required. GFI receptacles shall have test and reset buttons and indicator lights.

iii) Interior device plate covers hall be

(1) Unfinished areas (storage, mechanical rooms, etc.): Galvanized steel

(2) Finished, public spaces heavy duty nylon resin construction in color as selected by the

Architect.

(3) Exterior devices plates shall be galvanized steel, water proof with a hinged lid and lock.

g) Grounding and Bonding

i) Equipment Grounding

(1) Motor circuits shall have a ground conductor pulled with the phase conductors

(2) Scrape light fixture finish to assure a good ground

ii) Provide a green grounding conductor in all branch circuits and feeder conduits sized per NEC. Provide grounding conductors in all conduits systems, flexible conduit lengths, and surface raceway.

iii) Provide grounding of all equipment comprising a permanent bonding together of all metallic, non-current carrying parts of the electrical system like raceways, boxes, panels, cabinets, equipment enclosures, housings, motor frames, ducts and luminaires

h) Electrical Distribution Equipment (Question for architects: Can high voltage lines powering computer equipment be surge suppressed at distribution core? Would be nice to not have to deploy/mount individual surge suppressors at each computer equipment location).

i) Sole source Main Disconnect brand shall be Square D I line.

ii) Panel boards: Panel board shall be made of code gauge steel with finished cabinet front with concealed trim clamps, concealed door hinges, and lockable trim door with flush locks all keyed alike. Provide panel boards with copper bus (phase, neutral and ground bus). All panel board bussing for future breakers shall include bus fingers. 120/208 volt circuit breakers shall be bolt-on, minimum AIC rating shall meet or exceed available short circuit current. Panel board bus ampacity shall be as indicated in the electrical system design documents.

iii) Disconnect switches shall be heavy duty, Square D branch, horse power rated, 250 volt or 600 volt, 2- pole, solid neutral, or 3-pole fused or non-fused and as required. Switch shall be quick-make quick-break with interlock and lockable enclosure door for opening. Provide NEMA 1 enclosure indoors, NEMA 3R outdoors, and NEMA 4X in interior wet locations.

Fusible switches shall use current limiting fuses with rejection type fuse clips.

iv) Fuses 600 amp and above shall be equal to Bussman Low Peak, KRP-C. Fuses 600 amp and below shall be equal to Bussman Low Peak, LPN-RK or LPS-RK except that motor circuit fuses shall be equal to Bussman fusetron FRN-R.

i) Motor Controls

i) Shall be ABB branch variable frequency drive control.

j) Uninterruptable Power Supply , (UPS)

i) UPS shall be provided to maintain operation of the following devices for minimum 30 minutes.

(1) Security system controllers and door locks (magnetic locks).

(2) Network data rack equipment

(3) Fire Alarm system

(4) Building Automation system

ii) Stand/by power or physical shut/lock down of the building will release the UPS from duty