FY17_Rpr_by_Rpl_Var_Bldgs_Block_A1_specifications_Part11.pdf

REPAIR BY REPLACEMENT VARIOUS BUILDINGS, PTA, HAWAII, HI CLIN 0001/0002

2.10 RECEPTACLES

Provide the following:

a. UL 498, hard use (also designated heavy-duty), grounding-type.

b. Ratings and configurations: as indicated.

c. Bodies: brown as per NEMA WD 1.

d. Face and body: thermoplastic supported on a metal mounting strap.

e. Dimensional requirements: per NEMA WD 6.

f. Screw-type, side-wired wiring terminals or of the solderless pressure type having suitable conductor-release arrangement.

g. Grounding pole connected to mounting strap.

h. The receptacle: containing triple-wipe power contacts and double or triple-wipe ground contacts.

2.10.1 Weatherproof Receptacles

Provide receptacles, UL listed for use in "wet locations". Include cast metal box with gasketed, hinged, lockable and weatherproof while-in-use, polycarbonate, UV resistant/stabilized cover plate.

2.10.2 Ground-Fault Circuit Interrupter Receptacles

UL 943, duplex type for mounting in standard outlet box. Provide device capable of detecting current leak of 6 milliamperes or greater and tripping per requirements of UL 943 for Class A ground-fault circuit interrupter devices. Provide screw-type, side-wired wiring terminals or pre-wired (pigtail) leads.

2.10.3 Special Purpose Receptacles

Provide in ratings indicated or to match equipment/appliance manufacturer's requirements.

2.10.4 Range Receptacles

NEMA 14-50 configuration, rated 50 amperes, 125/250 volts or as required to match range being used. Coordinate with Contracting Officer.

2.10.5 Dryer Receptacles

NEMA 14-30 configuration, rated 30 amperes, 125/250 volts or as required to to match dryer being used. Coordinate with Contracting Officer.

2.11 PANELBOARDS

Provide panelboards in accordance with the following:

a. UL 67 and UL 50 having a short-circuit current rating as indicated, 10,000 amperes symmetrical minimum.

b. Panelboards for use as service disconnecting means: additionally

SECTION 26 20 00 Page 14 conform to UL 869A.

c. Panelboards: circuit breaker-equipped.

d. Designed such that individual breakers can be removed without disturbing adjacent units or without loosening or removing supplemental insulation supplied as means of obtaining clearances as required by UL.

e. "Specific breaker placement" is required in panelboards to match the breaker placement indicated in the panelboard schedule on the drawings.

f. Use of "Subfeed Breakers" is not acceptable unless specifically indicated otherwise.

g. Main breaker: "separately" mounted "above" or "below" branch breakers.

h. Where "space only" is indicated, make provisions for future installation of breakers.

i. Directories: indicate load served by each circuit in panelboard.

j. Directories: indicate source of service to panelboard (e.g., Panel PA served from Panel MDP).

k. Type directories and mount in holder behind transparent protective covering.

l. Panelboard nameplates: provided in accordance with paragraph FIELD

FABRICATED NAMEPLATES.

2.11.1 Enclosure

Provide panelboard enclosure in accordance with the following:

a. UL 50.

b. Cabinets mounted outdoors or flush-mounted: hot-dipped galvanized after fabrication.

c. Cabinets: painted in accordance with paragraph PAINTING.

d. Outdoor cabinets: NEMA 4X, stainless steel .

e. Front edges of cabinets: form-flanged or fitted with structural shapes welded or riveted to the sheet steel, for supporting the panelboard front.

f. All cabinets: fabricated such that no part of any surface on the finished cabinet deviates from a true plane by more than 1/8 inch.

g. Holes: provided in the back of indoor surface-mounted cabinets, with outside spacers and inside stiffeners, for mounting the cabinets with a 1/2 inch clear space between the back of the cabinet and the wall surface.

h. Flush doors: mounted on hinges that expose only the hinge roll to view when the door is closed.

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i. Each door: fitted with a combined catch and lock, except that doors over 24 inches long provided with a three-point latch having a knob with a T-handle, and a cylinder lock.

j. Keys: two provided with each lock, with all locks keyed alike.

k. Finished-head cap screws: provided for mounting the panelboard fronts on the cabinets.

2.11.2 Panelboard Buses

Support bus bars on bases independent of circuit breakers. Design main buses and back pans so that breakers may be changed without machining, drilling, or tapping. Provide isolated neutral bus in each panel for connection of circuit neutral conductors. Provide separate ground bus identified as equipment grounding bus per UL 67 for connecting grounding conductors; bond to steel cabinet.

2.11.3 Circuit Breakers

UL 489, thermal magnetic-type having a minimum short-circuit current rating equal to the short-circuit current rating of the panelboard in which the circuit breaker will be mounted. Breaker terminals: UL listed as suitable for type of conductor provided. Series rated circuit breakers and plug-in circuit breakers are unacceptable.

2.11.3.1 Multipole Breakers

Provide common trip-type with single operating handle. Design breaker such that overload in one pole automatically causes all poles to open. Maintain phase sequence throughout each panel so that any three adjacent breaker poles are connected to Phases A, B, and C, respectively.

2.11.3.2 Circuit Breaker With Ground-Fault Circuit Interrupter

UL 943 and NFPA 70. Provide with "push-to-test" button, visible indication of tripped condition, and ability to detect and trip on current imbalance of 6 milliamperes or greater per requirements of UL 943 for Class A ground-fault circuit interrupter.

2.11.3.3 Circuit Breakers for HVAC Equipment

Provide circuit breakers for HVAC equipment having motors (group or individual) marked for use with HACR type and UL listed as HACR type.

2.12 ENCLOSED CIRCUIT BREAKERS

UL 489. Individual molded case circuit breakers with voltage and continuous current ratings, number of poles, overload trip setting, and short circuit current interrupting rating as indicated. Enclosure type as indicated.

2.13 MANUAL MOTOR STARTERS

Single, double or three pole designed for surface mounting with overload protection.

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2.14 LOCKOUT REQUIREMENTS

Provide disconnecting means capable of being locked out for machines and other equipment to prevent unexpected startup or release of stored energy in accordance with 29 CFR 1910.147. Comply with requirements of Division 23, "Mechanical" for mechanical isolation of machines and other equipment.

2.15 TELECOMMUNICATIONS SYSTEM

Provide system of telecommunications wire-supporting structures (pathway), including: outlet boxes, conduits with pull wires, wireways and other accessories for telecommunications outlets and pathway in accordance with TIA-569 and as specified herein. Additional telecommunications requirements are specified in Section 27 10 00, BUILDING TELECOMMUNICATIONS

CABLING SYSTEM.

2.16 COMMUNITY ANTENNA TELEVISION (CATV) SYSTEM

Additional CATV requirements are specified in Section 27 05 14.00 10, CABLE

TELEVISION PREMISES DISTRIBUTION SYSTEM.

2.17 GROUNDING AND BONDING EQUIPMENT

2.17.1 Ground Bus

Copper ground bus: provided in the electrical equipment rooms as indicated.

2.17.2 Ground Wells

As indicated on drawings.

2.17.3 Telecommunications Grounding Busbar

Provide corrosion-resistant grounding busbar suitable for indoor installation in accordance with TIA-607. Busbars: plated for reduced contact resistance. If not plated, clean the busbar prior to fastening the conductors to the busbar and apply an anti-oxidant to the contact area to control corrosion and reduce contact resistance. Provide a telecommunications main grounding busbar (TMGB) at the telecommunications entrance. The telecommunications main grounding busbar (TMGB): sized in accordance with the immediate application requirements and with consideration of future growth. Provide telecommunications grounding busbars with the following:

a. Predrilled copper busbar provided with holes for use with standard sized lugs,

b. Minimum dimensions of 0.25 in thick by 4 in wide for the TMGB with length as indicated;

c. Listed by a nationally recognized testing laboratory.

2.18 MANUFACTURER'S NAMEPLATE

Provide on each item of equipment a nameplate bearing the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable.

SECTION 26 20 00 Page 17

2.19 FIELD FABRICATED NAMEPLATES

Provide field fabricated nameplates in accordance with the following:

a. ASTM D709.

b. Provide laminated plastic nameplates for each equipment enclosure, relay, switch, and device; as specified or as indicated on the drawings.

c. Each nameplate inscription:

(1) Receptacles: panel and circuit number for receptacle.

(2) Switches: identify the function and, when applicable, the position, as well as source panel and circuit.

d. Nameplates: melamine plastic, 0.125 inch thick, white with black center core.

e. Surface: matte finish. Corners: square. Accurately align lettering and engrave into the core.

f. Minimum size of nameplates:

(1) 3/8 by 1 1/4 inches for receptacles

(2) one by 2.5 inches for items other than receptacles

g. Lettering size and style: a minimum of 0.25 inch high normal block style.

2.20 WARNING SIGNS

Provide warning signs for flash protection in accordance with NFPA 70E and NEMA Z535.4 for switchboards, panelboards, industrial control panels, and motor control centers that are in other than dwelling occupancies and are likely to require examination, adjustment, servicing, or maintenance while energized. Provide field installed signs to warn qualified persons of potential electric arc flash hazards when warning signs are not provided by the manufacturer. Provide marking that is clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.

2.21 FIRESTOPPING MATERIALS

Provide firestopping around electrical penetrations in accordance with Section 07 84 00, FIRESTOPPING .

2.22 WIREWAYS

UL 870. Material: steel epoxy painted 16 gauge for heights and depths up to 6 by 6 inches, and 14 gauge for heights and depths up to 12 by 12 inches.

Provide in length required for the application with screw-cover NEMA 1 enclosure per NEMA ICS 6.

SECTION 26 20 00 Page 18

2.23 POWER METERING - Advanced

2.23.1 General Provisions

a. All setup parameters required by the Power Meter shall be stored in nonvolatile memory and retained in the event of a control power interruption.

b. The Power Meter may be applied in three-phase, three-or four-wire systems.

c. The Power Meter shall be capable of being applied without modification at nominal frequencies of 50, 60, or 400 Hz.

2.23.2 Measured Values

The Power Meter shall provide the following, true RMS metered quantities:

2.23.2.1 Real-Time Readings

a. Current(Per-Phase, N (calculated), 3-Phase Avg, % Unbalanced)

b. Voltage (L-L Per-Phase, L-L 3-Phase Avg, L-N Per-Phase, 3-Phase Avg, % unbalanced)

c. Real Power (Per-Phase, 3-Phase total)

d. Reactive Power (Per-Phase, 3-Phase total)

e. Apparent Power (Per-Phase, 3-Phase Total)

f. Power Factor (True) (Per-Phase, 3-Phase Total)

g. Power Factor (Displacement) (Per-Phase, 3-Phase Total)

h. Frequency

i. THD (Current and voltage)

2.23.2.2 Energy Readings

a. Accumulated Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)

b. Incremental Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)

c. Conditional Energy (Real kWh, Reactive kVARh, Apparent kVAh) (Signed/Absolute)

d. Reactive Energy by Quadrant

2.23.2.3 Demand Readings

a. Present:

(1) Present

(2) Running Average

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(3) Last completed interval

(4) Peak

b. Demand Real Power Calculations (3-Phase Total):

(1) Present

(2) Running Average

(3) Last completed interval

(4) Predicted

(5) Peak

(6) Coincident with peak kVA Demand

(7) Coincident with kVAR Demand

c. Demand Reactive Power Calculations (3-Phase Total):

(1) Present

(2) Running Average

(3) Last completed interval

(4) Predicted

(5) Peak

(6) Coincident with peak kVA Demand

(7) Coincident with kW Demand

d. Demand Apparent Power Calculations (3-Phase Total):

(1) Present

(2) Running Average

(3) Last completed interval

(4) Predicted

(5) Peak

(6) Coincident with peak kVA Demand

(7) Coincident with kW Demand

e. Average Power Factor Calculations, Demand Coincident (True), (3-Phase Total):

(1) Last completed interval

(2) Coincident with kW peak

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(3) Coincident with kVAR peak

(4) Coincident with kVA peak

f. Power Analysis Values

(1) THD - Voltage, Current (3-phase, Per-Phase, Neutral)

(2) THD - Voltage, Current (3-Phase, Per-Phase, Neutral)

(3) Displacement Power Factor (Per-Phase, 3-Phase)

(4) Fundamental Voltage, Magnitude and Angle (Per-Phase)

(5) Fundamental Currents, Magnitude and Angle (Per-Phase)

(6) Fundamental Real Power (Per-Phase, 3-Phase)

(7) Fundamental Reactive Power (Per-Phase)

(8) Harmonic Power (Per-Phase, 3-Phase)

(9) Phase Rotation

(10) Unbalance (Current and Voltage)

(11) Harmonic Magnitudes & Angles for Current and Voltages (Per Phase) up to the 63rd Harmonic.

2.23.3 Demand

All Power demand calculations shall use any one of the following calculation methods, selectable by the user:

Thermal demand is calculated using a sliding window and is updated every second. The sliding window length shall be defined by the user from 1-60 minutes in 1-minute increments.

Block interval, with optional sub-intervals. The window length shall be set by the user from 1-60 minutes in 1-minute intervals. The user shall be able to set the sub-interval length from 1-60 minutes in 1-minute intervals. The following Block methods are available:

a. Sliding Block that calculates demand every second with intervals less than 15 minutes and every 15 seconds with an interval between 15 and 60 minutes.

b. Fixed Block that calculates demand at the end of the interval.

c. Rolling Block that a subinterval is configured. Demand is calculated at the end of each subinterval and displays at the end of the interval.

Demand can be calculated using a Synchronization signal:

a. Demand can be synchronized to an input pulse from an external source. The demand period begins with every pulse. A

SECTION 26 20 00 Page 21 synchronized input can be configured to either a block or rolling block calculation.

b. Demand can be synchronized to a communication signal. This can be configured to either a block or rolling block calculation.

c. Demand can be synchronized to the clock in the Power Meter.

2.23.4 Sampling

a. The current and voltage signals shall be digitally sampled at a rate high enough to provide true rms accuracy to the 63rd harmonic (fundamental of 60 Hz).

b. The Power Meter shall provide continuous sampling at a minimum of up to 128 samples/cycle, simultaneously on all voltage and current channels in the meter.

2.23.5 Minimum and Maximum Values

a. The Power Meter shall provide a monthly minimum and maximum values for the following parameters:

(1) Voltage L-L

(2) Voltage L-N

(3) Current per phase

(4) Voltage L-L Unbalance

(5) Voltage L-N Unbalance

(6) True Power Factor

(7) Displacement Power Factor

(8) Real Power total

(9) Reactive Power Total

(10) Apparent Power total

(11) THD Voltage L-L

(12) THD Voltage L-N

(13) THD Current

(14) Frequency

b. For each min/max value listed above, the Power Meter shall record the following attributes:

(1) Date/Time of the min/max value

(2) Min/Max. Value

(3) Phase of recorded Min/Max (for multi-phase quantities)

SECTION 26 20 00 Page 22

c. Minimum and maximum values shall be available via communications and display.

2.23.6 Harmonic Resolution

a. Advanced harmonic information shall be available via the Power Meter. This shall include the calculation of the harmonic magnitudes and angles for each phase voltage and current through the 63rd harmonic.

b. Harmonic information shall be available for all three phases, current and voltage, plus the residual current. To ensure maximum accuracy for analysis, the current and voltage information for all phases shall be obtained simultaneously from the same cycle.

c. The harmonic magnitude shall be reported as a percentage of the fundamental or as a percentage of the rms values, as selected by the user.

2.23.7 Current Outputs

a. The Power Meter shall accept current inputs from standard instrument current transformers with 5 amp secondary output and shall have a metering range of 0-10 amps with the following withstand currents: 15 amp continuous, 50 amp 10 sec per hour, 500 amp 1 sec per hour.

b. Current transformer primaries through 327kA shall be supported.

2.23.8 Voltage Inputs

a. The circuit monitor shall allow connection to circuits up to 600 volts AC without the use of potential transformers. The Power Meter shall also accept voltage inputs from standard instrument potential transformers with 120 volt secondary output. The Power Meter shall support PT primaries through 3.2 MV.

b. The nominal full scale input of the circuit monitor shall be 347 Volts AC L-N, 600 Volts AC L-L. The meter shall accept a metering over-range of 50%. The input impedance shall be greater than 2 Ohm.

2.23.9 Accuracy

a. The Power Meter shall comply with ANSI C12.20 Class 0.5 and IEC 60687 Class 0.5 for revenue meters.

The Power Meter shall be accurate to 0.35% of reading + .035% of full scale for power and energy. Voltage and current shall be accurate to 0.075% of reading plus 0.025% of full scale. Power factor metering shall be accurate to +.002 from 0.5 leading to 0.5 lagging. Frequency metering shall be accurate +.01 Hz at 45-67 Hz.

These accuracies shall be maintained for both light and full loads.

No annual calibration shall be required to maintain this accuracy.

SECTION 26 20 00 Page 23

2.23.10 Waveform Capture

a. The Power Meter shall provide steady state waveform captures of the voltage and current channels. Waveform capture shall be for 3 cycles and is initiated manually using software.

b. The Power Meter shall capture, and store in internal non-volatile memory, 128 digitally sampled data points for each cycle of each phase voltage. The number of waveform captures stored onboard the circuit monitor is configurable and shall be dependent on the amount of memory available.

c. The Power Meter shall transmit the waveform samples over the network to the personal computer workstation for display, archival, and analysis.

d. Harmonic analysis performed on the captured waveforms shall resolve harmonics through the 63rd.

e. The data used for the three-cycle waveform capture display shall also be used to derive metered quantities in order to provide meaningful additional data.

f. All waveforms must reflect actual circuit performance. Waveforms synthesized or composed over time shall not be acceptable.

g. The Power Meter shall have disturbance sag/swell detection for troubleshooting and solving anomalies.

h. The Power Meter shall have Configurable Waveform Capture with flexible resolution permits to adapt the waveform captures according to the type of even/disturbance or channel.

2.23.11 Input/Output

a. The Power Meter shall supply 1 digital input and 1 digital solid state output/KY pulse output as standard.

b. The Power Meter shall be capable of operating a solid state KY output relay to provide output pulses for a user definable increment of reported energy. Minimum relay life shall be in excess of one billion operations. The standard KY output shall operate up to 240 volt AC, 300 volt DC, 96mA max, and provide 3750 volt rms isolation.

c. The Power Meter shall support multiple input/output options including digital inputs, mechanical relay outputs. This optional I/O shall be in the form of an option module that can be field installable.

d. The digital inputs shall have four operating modes:

(1) Normal mode for simple on/off digital inputs

(2) Demand Interval Synch Pulse to accept a demand synch pulse from a utility demand meter.

(3) Conditional Energy Control input to control conditional energy accumulation.

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e. The optional relay output module shall provide a load voltage range from 20 to 240 VAC or from 20 to 30 VDC. It shall support a load current of 2A.

2.23.12 Output Relay Control

a. Relay outputs shall operate either by user command sent over the communication link, or in response to a user defined alarm or event.

b. Output relays will have normally open and normally closed contacts and can be configured to operate in several modes:

(1) Normal contact closure where the contacts change state for as long as the signal exists.

(2) Latched mode when the contacts change state when a pick-up signal is received and hold until a dropout signal is received.

(3) Timed mode when the contacts change state upon receipt of a pick-up signal and are held for a pre-programmed duration.

(4) End of Power Demand Interval when the relay operates as a synch pulse for other devices.

(5) Energy pulse output. The Relay will pulse quantities used for Absolute kWh, Absolute kVARh, kVAh, kWh In, kVARh In, kWh Out and KVARh Out.

c. It shall be possible for individual relay outputs to be controlled by multiple alarms using Boolean type logic.

d. Each output relay used in a momentary contact mode shall have an independent timer that can be set by the user.

2.23.13 Logging

a. The Power Meter shall provide for onboard data logging. Each Power Meter shall be able to log data, alarms and events, and waveforms. The Meter shall offer 800kB of on-board nonvolatile memory. Logged information to be stored in each Power Meter include the following:

(1) Billing Log: The Power Meter shall store in non-volatile memory a configurable billing log that is updated every 15 minutes. Data shall be recorded by month, day and 15 minute interval. The log shall contain 24 months of monthly data, 32 days of daily data and between 2 to 52 days of 15 minute interval data depending on the number of quantities selected.

(2) Custom Data Logs: The Power Meter shall provide 1 data log or up to 3 separate data logs, configurable by the user. Each log entry shall be date and time stamped to the second. Each log entry shall hold data of up to 96 parameters each. It shall be possible to set up each log to take data at a different user defined schedule interval. In addition, it shall be possible for a user to define an event. Data logs can be configured by users to be Fill & Hold or Circular (FIFO).

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(3) Alarm Log: This log shall contain time, date, event information, and coincident information for each user defined alarm or event.

(4) Waveform Logs: This log shall store captured waveforms.

Waveform logs shall be either Fill & Hold or Circular (FIFO) as defined by the user.

b. The Power Meter shall have default values for all logs loaded at the factory and begin on device power up.

2.23.14 Alarming

a. Alarm events shall be user definable.

b. The user shall be able to define over 50 alarm conditions.

c. The following shall be available as alarm events:

(1) Over/under current

(2) Over/under voltage

(3) Current imbalance

(4) Phase loss, current

(5) Phase loss, voltage

(6) Voltage imbalance

(7) Work kW Demand

(8) Phase reversal

(9) Digital Input OFF/ON

(10) End of incremental energy interval

(11) End of demand interval

d. For each over/under metered value alarm, the user shall be able to define a pick-up, drop-out, and delay.

e. There shall be four alarm severity levels in order make it easier for the user to respond to the most important events first.

f. Indication of an alarm condition shall be given on the front panel.

g. The Power Meter shall provide Boolean alarms in the form of combine up to four other alarms with NAND, NOT, OR, and XOR.

2.23.15 Feature Addition

It shall be possible to field upgrade the firmware in the Power Meter to enhance functionality. These firmware upgrades shall be done through the communication connection and shall allow upgrades of individual meters or groups. No disassembly or changing of integrated circuit chips shall be

SECTION 26 20 00 Page 26 required and it will not be necessary to de-energize the circuit or the equipment to perform the upgrade.

2.23.16 Control Power

The Power Meter shall operate properly over a wide range of control power including 90-457 VAC or 100-300 VDC.

2.23.17 Communications

a. The Power Meter shall communicate via RS-485 Modbus or Jbus protocol with a 2-wire connection.

b. Using an optional EGX Ethernet Communications device, the Power Meter shall provide Modbus communications using Modbus TCP via an Ethernet network at 10/100 Mbaud using UTP or at 100 Mbaud using a fiber connection.

2.23.18 Display

a. The Power Meter display shall allow the user to select one of three languages to view on the screen: English, French, or Spanish. The Power Meter display shall also allow the user to select a date/time format.

b. The Power Meter display shall be back lit LCD for easy viewing, display shall also be anti-glare and scratch resistant.

c. The Display shall be capable of allowing the user to view four values on one screen at the same time. A summary screen shall also be available to allow the user to view a snapshot of the system.

d. The Power Meter display shall provide local access to the following metered quantities:

(1) Current, per phase rms, 3-phase average and neutral (if applicable)

(2) Voltage, phase-to-phase, phase-to-neutral, and 3-phase average (phase-to-phase and phase-to-neutral).

(3) Real power, per phase and 3-phase total

(4) Reactive power, per phase and 3-phase total

(5) Demand current, per phase and three phase average

(6) Demand real power, three phase total

(7) Demand apparent power, three phase total

(8) Accumulated Energy, (MWh and MVARh)

(9) THD, current and voltage, per phase

e. Reset of the following electrical parameters shall also be allowed from the Power Meter display:

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(1) Peak demand current

(2) Peak demand power (kW) and peak demand apparent power (kVA)

(3) Energy (MWh) and reactive energy (MVARh)

f. Setup for system requirements shall be allowed from the Power Meter display. Setup provisions shall include:

(1) CT rating

(2) PT rating

(3) System type three-phase, 4-wire

(4) Watt-hours per pulse

g. The Power Meter shall be PM870 series manufactured by Square D Company or approved equivalent.

2.24 SURGE PROTECTIVE DEVICES

Provide parallel type surge protective devices (SPD) which comply with UL 1449 at the panelboards. Provide surge protectors in a NEMA 1 enclosure per NEMA ICS 6. Use Type 1 or Type 2 SPD and connect on the load side of a dedicated circuit breaker.

Provide the following modes of protection:

FOR SINGLE PHASE AND THREE PHASE WYE CONNECTED SYSTEMS-

Phase to phase ( L-L ) Each phase to neutral ( L-N ) Neutral to ground ( N-G ) Phase to ground ( L-G )

SPDs at the service entrance: provide with a minimum surge current rating of 80,000 amperes for L-L mode minimum and 40,000 amperes for other modes (L-N, L-G, and N-G).

Provide SPDs. Maximum L-N, L-G, and N-G Voltage Protection Rating:

700V for 120/240V, single phase system 700V for 208Y/120V, three phase system

Maximum L-L Voltage Protection Rating:

1,200V for 120/240V, single phase system 1,200V for 208Y/120V, three phase system

The minimum MCOV (Maximum Continuous Operating Voltage) rating for L-N and L-G modes of operation: 120% of nominal voltage for 240 volts and below;

115% of nominal voltage above 240 volts to 480 volts.

2.25 FACTORY APPLIED FINISH

Provide factory-applied finish on electrical equipment in accordance with the following:

a. NEMA 250 corrosion-resistance test and the additional requirements as

SECTION 26 20 00 Page 28 specified herein.

b. Interior and exterior steel surfaces of equipment enclosures:

thoroughly cleaned followed by a rust-inhibitive phosphatizing or equivalent treatment prior to painting.

c. Exterior surfaces: free from holes, seams, dents, weld marks, loose scale or other imperfections.

d. Interior surfaces: receive not less than one coat of corrosion-resisting paint in accordance with the manufacturer's standard practice.

e. Exterior surfaces: primed, filled where necessary, and given not less than two coats baked enamel with semigloss finish.

f. Equipment located indoors: ANSI Light Gray, and equipment located outdoors: ANSI Light Gray.

g. Provide manufacturer's coatings for touch-up work and as specified in paragraph FIELD APPLIED PAINTING.

PART 3 EXECUTION

3.1 INSTALLATION

Electrical installations, including weatherproof and hazardous locations and ducts, plenums and other air-handling spaces: conform to requirements of NFPA 70 and IEEE C2 and to requirements specified herein.

3.1.1 Underground Service

Underground service conductors and associated conduit: continuous from service entrance equipment to outdoor power system connection.

3.1.2 Service Entrance Identification

Service entrance disconnect devices, switches, and enclosures: labeled and identified as such.

3.1.2.1 Labels

Wherever work results in service entrance disconnect devices in more than one enclosure, as permitted by NFPA 70, label each enclosure, new and existing, as one of several enclosures containing service entrance disconnect devices. Label, at minimum: indicate number of service disconnect devices housed by enclosure and indicate total number of enclosures that contain service disconnect devices. Provide laminated plastic labels conforming to paragraph FIELD FABRICATED NAMEPLATES. Use lettering of at least 0.25 inch in height, and engrave on black-on-white matte finish. Service entrance disconnect devices in more than one enclosure: provided only as permitted by NFPA 70.

3.1.3 Wiring Methods

Provide insulated conductors installed in rigid steel conduit, IMC, rigid nonmetallic conduit, or EMT, except where specifically indicated or specified otherwise or required by NFPA 70 to be installed otherwise.

Grounding conductor: separate from electrical system neutral conductor.

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Provide insulated green equipment grounding conductor for circuit(s) installed in conduit and raceways. Shared neutral or multi-wire branch circuits are not permitted. Minimum conduit size: 1/2 inch in diameter for low voltage lighting and power circuits. Vertical distribution in multiple story buildings: made with metal conduit in fire-rated shafts, with metal conduit extending through shafts for minimum distance of 6 inches.

Firestop conduit which penetrates fire-rated walls, fire-rated partitions, or fire-rated floors in accordance with Section 07 84 00, FIRESTOPPING.

3.1.3.1 Pull Wire

Install pull wires in empty conduits. Pull wire: plastic having minimum 200-pound force tensile strength. Leave minimum 36 inches of slack at each end of pull wire.

3.1.4 Conduit Installation

Unless indicated otherwise, conceal conduit under floor slabs and within finished walls, ceilings, and floors. Keep conduit minimum 6 inches away from parallel runs of flues and steam or hot water pipes. Install conduit parallel with or at right angles to ceilings, walls, and structural members where located above accessible ceilings and where conduit will be visible after completion of project.

3.1.4.1 Restrictions Applicable to EMT

a. Do not install underground.

b. Do not encase in concrete, mortar, grout, or other cementitious materials.

c. Do not use in areas subject to severe physical damage including but not limited to equipment rooms where moving or replacing equipment could physically damage the EMT.

d. Do not use in hazardous areas.

e. Do not use outdoors.

f. Do not use in fire pump rooms.

g. Do not use when the enclosed conductors must be shielded from the effects of High-altitude Electromagnetic Pulse (HEMP).

3.1.4.2 Restrictions Applicable to Nonmetallic Conduit

a. PVC Schedule 40 and PVC Schedule 80

(1) Do not use in areas where subject to severe physical damage, including but not limited to, mechanical equipment rooms, electrical equipment rooms, hospitals, power plants, missile magazines, and other such areas.

(2) Do not use in hazardous (classified) areas.

(3) Do not use in fire pump rooms.

(4) Do not use in penetrating fire-rated walls or partitions, or fire-rated floors.

SECTION 26 20 00 Page 30

(5) Do not use above grade, except where allowed in this section for rising through floor slab.

(6) Do not use when the enclosed conductors must be shielded from the effects of High-altitude Electromagnetic Pulse (HEMP).

3.1.4.3 Restrictions Applicable to Flexible Conduit

Use only as specified in paragraph FLEXIBLE CONNECTIONS. Do not use when the enclosed conductors must be shielded from the effects of High-altitude Electromagnetic Pulse (HEMP).

3.1.4.4 Underground Conduit

Plastic-coated rigid steel; plastic-coated steel IMC; PVC, Type EPC-40; or fiberglass. Convert nonmetallic conduit, other than PVC Schedule 40 or 80, to plastic-coated rigid, or IMC, steel conduit before rising through floor slab. Plastic coating: extend minimum 6 inches above floor.

3.1.4.5 Stub-Ups

Provide conduits stubbed up through concrete floor for connection to free-standing equipment with adjustable top or coupling threaded inside for plugs, set flush with finished floor. Extend conductors to equipment in rigid steel conduit, except that flexible metal conduit may be used 6 inches above floor. Where no equipment connections are made, install screwdriver-operated threaded flush plugs in conduit end.

3.1.4.6 Conduit Support

Support conduit by pipe straps, wall brackets, threaded rod conduit hangers, or ceiling trapeze. Fasten by wood screws to wood; by toggle bolts on hollow masonry units; by concrete inserts or expansion bolts on concrete or brick; and by machine screws, welded threaded studs, or spring-tension clamps on steel work. Threaded C-clamps may be used on rigid steel conduit only. Do not weld conduits or pipe straps to steel structures. Do not exceed one-fourth proof test load for load applied to fasteners. Provide vibration resistant and shock-resistant fasteners attached to concrete ceiling. Do not cut main reinforcing bars for any holes cut to depth of more than 1 1/2 inches in reinforced concrete beams or to depth of more than 3/4 inch in concrete joints. Fill unused holes. In partitions of light steel construction, use sheet metal screws. In suspended-ceiling construction, run conduit above ceiling. Do not support conduit by ceiling support system. Conduit and box systems: supported independently of both

(a) tie wires supporting ceiling grid system, and (b) ceiling grid system into which ceiling panels are placed. Do not share supporting means between electrical raceways and mechanical piping or ducts. Coordinate installation with above-ceiling mechanical systems to assure maximum accessibility to all systems. Spring-steel fasteners may be used for lighting branch circuit conduit supports in suspended ceilings in dry locations. Where conduit crosses building expansion joints, provide suitable watertight expansion fitting that maintains conduit electrical continuity by bonding jumpers or other means. For conduits greater than 2 1/2 inches inside diameter, provide supports to resist forces of 0.5 times the equipment weight in any direction and 1.5 times the equipment weight in the downward direction.

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3.1.4.7 Directional Changes in Conduit Runs

Make changes in direction of runs with symmetrical bends or cast-metal fittings. Make field-made bends and offsets with hickey or conduit-bending machine. Do not install crushed or deformed conduits. Avoid trapped conduits. Prevent plaster, dirt, or trash from lodging in conduits, boxes, fittings, and equipment during construction. Free clogged conduits of obstructions.

3.1.4.8 Locknuts and Bushings

Fasten conduits to sheet metal boxes and cabinets with two locknuts where required by NFPA 70, where insulated bushings are used, and where bushings cannot be brought into firm contact with the box; otherwise, use at least minimum single locknut and bushing. Provide locknuts with sharp edges for digging into wall of metal enclosures. Install bushings on ends of conduits, and provide insulating type where required by NFPA 70.

3.1.4.9 Flexible Connections

Provide flexible steel conduit between 3 and 6 feet in length for recessed and semirecessed lighting fixtures; for equipment subject to vibration, noise transmission, or movement; and for motors. Install flexible conduit to allow 20 percent slack. Minimum flexible steel conduit size: 1/2 inch diameter. Provide liquidtight flexible conduit in wet and damp locations and in fire pump rooms for equipment subject to vibration, noise transmission, movement or motors. Provide separate ground conductor across flexible connections.

3.1.4.10 Telecommunications and Signal System Pathway

Install telecommunications pathway in accordance with TIA-569.

a. Horizontal Pathway: Telecommunications pathways from the work area to the telecommunications room: installed and cabling length requirements in accordance with TIA-568-C.1. Size conduits, and wireways in accordance with TIA-569 and as indicated.

b. Backbone Pathway: Telecommunication pathways from the telecommunications entrance facility to telecommunications rooms, and, telecommunications equipment rooms (backbone cabling): installed in accordance with TIA-569.

3.1.5 Telecommunications Cable Support Installation

Install open top and closed ring cable supports on 4 ft to 5 ft centers to adequately support and distribute the cable’s weight. Use these types of supports to support a maximum of 50 0.25 in diameter cables. Install suspended cables with at least 3 in of clear vertical space above the ceiling tiles and support channels (T-bars). Open top and closed ring cable supports: suspended from or attached to the structural ceiling or walls with hardware or other installation aids specifically designed to support their weight.

3.1.6 Boxes, Outlets, and Supports

Provide boxes in wiring and raceway systems wherever required for pulling of wires, making connections, and mounting of devices or fixtures. Boxes for metallic raceways: cast-metal, hub-type when located in wet locations, SECTION 26 20 00 Page 32 when surface mounted on outside of exterior surfaces, when surface mounted on interior walls exposed up to 7 feet above floors and walkways, or when installed in hazardous areas and when specifically indicated. Boxes in other locations: sheet steel, . Provide each box with volume required by NFPA 70 for number of conductors enclosed in box. Boxes for mounting lighting fixtures: minimum 4 inches square, or octagonal, except that smaller boxes may be installed as required by fixture configurations, as approved. Boxes for use in masonry-block or tile walls: square-cornered, tile-type, or standard boxes having square-cornered, tile-type covers.

Provide gaskets for cast-metal boxes installed in wet locations and boxes installed flush with outside of exterior surfaces. Provide separate boxes for flush or recessed fixtures when required by fixture terminal operating temperature; provide readily removable fixturesfor access to boxes unless ceiling access panels are provided. Support boxes and pendants for surface-mounted fixtures on suspended ceilings independently of ceiling supports. Fasten boxes and supports with wood screws on wood, with bolts and expansion shields on concrete or brick, with toggle bolts on hollow masonry units, and with machine screws or welded studs on steel. Threaded studs driven in by powder charge and provided with lockwashers and nuts or nail-type nylon anchors may be used in lieu of wood screws, expansion shields, or machine screws. In open overhead spaces, cast boxes threaded to raceways need not be separately supported except where used for fixture support; support sheet metal boxes directly from building structure or by bar hangers. Where bar hangers are used, attach bar to raceways on opposite sides of box, and support raceway with approved-type fastener maximum 24 inches from box. When penetrating reinforced concrete members, avoid cutting reinforcing steel.

3.1.6.1 Boxes

Boxes for use with raceway systems: minimum 1 1/2 inches deep, except where shallower boxes required by structural conditions are approved.

Boxes for other than lighting fixture outlets: minimum 4 inches square, except that 4 by 2 inch boxes may be used where only one raceway enters outlet. Telecommunications outlets: a minimum of 4 11/16 inches square by 2 1/8 inches deep. Mount outlet boxes flush in finished walls where possible or surface mounted.

3.1.6.2 Pull Boxes

Construct of at least minimum size required by NFPA 70 of code-gauge aluminum or galvanized sheet steel, and compatible with nonmetallic raceway systems, except where cast-metal boxes are required in locations specified herein. Provide boxes with screw-fastened covers. Where several feeders pass through common pull box, tag feeders to indicate clearly electrical characteristics, circuit number, and panel designation.

3.1.6.3 Extension Rings

Extension rings are not permitted for new construction. Use only on existing boxes in concealed conduit systems where wall is furred out for new finish.

3.1.7 Mounting Heights

Mount panelboards, enclosed circuit breakers, and disconnecting switches so height of operating handle at its highest position is maximum 78 inches above floor. Mount lighting switches 48 inches above finished floor.

Mount receptacles and telecommunications outlets 18 inches above finished

SECTION 26 20 00 Page 33 floor, unless otherwise indicated. Mount other devices as indicated.

Measure mounting heights of wiring devices and outlets in non-hazardous areas to center of device or outlet. Measure mounting heights of receptacle outlet boxes in the hazardous area to the bottom of the outlet box.

3.1.8 Conductor Identification

Provide conductor identification within each enclosure where tap, splice, or termination is made. For conductors No. 6 AWG and smaller diameter, provide color coding by factory-applied, color-impregnated insulation. For conductors No. 4 AWG and larger diameter, provide color coding by plastic-coated, self-sticking markers; colored nylon cable ties and plates;

or heat shrink-type sleeves. Identify control circuit terminations in accordance with manufacturer's recommendations. Provide telecommunications system conductor identification as specified in Section 27 10 00 BUILDING

TELECOMMUNICATIONS CABLING SYSTEMS.

3.1.8.1 Marking Strips

Provide marking strips in accordance with the following:

a. Provide white or other light-colored plastic marking strips, fastened by screws to each terminal block, for wire designations.

b. Use permanent ink for the wire numbers

c. Provide reversible marking strips to permit marking both sides, or provide two marking strips with each block.

d. Size marking strips to accommodate the two sets of wire numbers.

e. Assign a device designation in accordance with NEMA ICS 1 to each device to which a connection is made. Mark each device terminal to which a connection is made with a distinct terminal marking corresponding to the wire designation used on the Contractor's schematic and connection diagrams.

f. The wire (terminal point) designations used on the Contractor's wiring diagrams and printed on terminal block marking strips may be according to the Contractor's standard practice; however, provide additional wire and cable designations for identification of remote (external) circuits for the Government's wire designations.

g. Prints of the marking strips drawings submitted for approval will be so marked and returned to the Contractor for addition of the designations to the terminal strips and tracings, along with any rearrangement of points required.

3.1.9 Splices

Make splices in accessible locations. Make splices in conductors No. 10 AWG and smaller diameter with insulated, pressure-type connector. Make splices in conductors No. 8 AWG and larger diameter with solderless connector, and cover with insulation material equivalent to conductor insulation.

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3.1.10 Covers and Device Plates

Install with edges in continuous contact with finished wall surfaces without use of mats or similar devices. Plaster fillings are not permitted. Install plates with alignment tolerance of 1/16 inch. Use of sectional-type device plates are not permitted. Provide gasket for plates installed in wet locations.

3.1.11 Electrical Penetrations

Seal openings around electrical penetrations through fire resistance-rated walls, partitions, floors, or ceilings in accordance with Section 07 84 00

FIRESTOPPING.

3.1.12 Grounding and Bonding

Provide in accordance with NFPA 70. Ground exposed, non-current-carrying metallic parts of electrical equipment, metallic raceway systems, grounding conductor in metallic and nonmetallic raceways, telecommunications system grounds, and neutral conductor of wiring systems. Make ground connection at main service equipment, and extend grounding conductor to point of entrance of metallic water service. Make connection to water pipe by suitable ground clamp or lug connection to plugged tee. If flanged pipes are encountered, make connection with lug bolted to street side of flanged connection. Supplement metallic water service grounding system with additional made electrode in compliance with NFPA 70. Make ground connection to ground wells on exterior of building. Interconnect all grounding media in or on the structure to provide a common ground potential. This includes electrical service, telecommunications system grounds, as well as underground metallic piping systems. Make interconnection to the gas line on the customer's side of the meter. In addition to the requirements specified herein, provide telecommunications grounding in accordance with TIA-607. Where ground fault protection is employed, ensure that connection of ground and neutral does not interfere with correct operation of fault protection.

3.1.12.1 Ground Wells

Provide ground wells as indicated on drawings. Measure the resistance to ground using the fall-of-potential method described in IEEE 81. Do not exceed 25 ohms under normally dry conditions for the maximum resistance of a ground well. If the resultant resistance exceeds 25 ohms measured not less than 48 hours after rainfall, notify the Contracting Officer who will decide on the number of ground wells to add.

3.1.12.2 Grounding Connections

Make grounding connections which are buried or otherwise normally inaccessible, excepting specifically those connections for which access for periodic testing is required, by exothermic weld or compression connector.

a. Make exothermic welds strictly in accordance with the weld manufacturer's written recommendations. Welds which are "puffed up" or which show convex surfaces indicating improper cleaning are not acceptable. Mechanical connectors are not required at exothermic welds.

b. Make compression connections using a hydraulic compression tool to provide the correct circumferential pressure. Provide tools and dies as recommended by the manufacturer. Use an embossing die code or other

SECTION 26 20 00 Page 35 standard method to provide visible indication that a connector has been adequately compressed on the ground wire.

3.1.12.3 Resistance

Maximum resistance-to-ground of grounding system: do not exceed 25 ohms under dry conditions. Where resistance obtained exceeds 25 ohms, contact Contracting Officer for further instructions.

3.1.12.4 Telecommunications System

Provide telecommunications grounding in accordance with the following:

a. Telecommunications Grounding Busbars: Provide a telecommunications main grounding busbar (TMGB) in the telecommunications entrance facility. Install the TMGB as close to the electrical service entrance grounding connection as practicable. Install telecommunications grounding busbars to maintain clearances as required by NFPA 70 and insulated from its support. A minimum of 2 inches separation from the wall is recommended to allow access to the rear of the busbar and adjust the mounting height to accommodate overhead or underfloor cable routing.

b. Telecommunications Bonding Conductors: Provide main telecommunications service equipment ground consisting of separate bonding conductor for telecommunications, between the TMGB and readily accessible grounding connection of the electrical service. Grounding and bonding conductors should not be placed in ferrous metallic conduit. If it is necessary to place grounding and bonding conductors in ferrous metallic conduit that exceeds3 feet in length, bond the conductors to each end of the conduit using a grounding bushing or a No. 6 AWG conductor, minimum.

c. Telecommunications Grounding Connections: Telecommunications grounding connections to the TMGB: utilize listed compression two-hole lugs, exothermic welding, suitable and equivalent one hole non-twisting lugs, or other irreversible compression type connections. Bond all metallic pathways, cabinets, and racks for telecommunications cabling and interconnecting hardware located within the same room or space as the TMGB to the TMGB. In a metal frame (structural steel) building, where the steel framework is readily accessible within the room; bond each TMGB to the vertical steel metal frame using a minimum No. 6 AWG conductor. Where the metal frame is external to the room and readily accessible, bond the metal frame to the TGB or TMGB with a minimum No.

6 AWG conductor. When practicable because of shorter distances and, where horizontal steel members are permanently electrically bonded to vertical column members, the TGB may be bonded to these horizontal members in lieu of the vertical column members. All connectors used for bonding to the metal frame of a building must be listed for the intended purpose.

3.1.13 Equipment Connections

Provide power wiring for the connection of motors and control equipment under this section of the specification. Except as otherwise specifically noted or specified, automatic control wiring, control devices, and protective devices within the control circuitry are not included in this section of the specifications and are provided under the section specifying the associated equipment.

SECTION 26 20 00 Page 36

3.1.14 Government-Furnished Equipment

Contractor rough-in for Government-furnished equipment to make equipment operate as intended, including providing miscellaneous items such as plugs, receptacles, wire, cable, conduit, flexible conduit, and outlet boxes…