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Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

D.

Provide permanent plastic name tag indicating load for each feeder for all junction
boxes, handholes and manholes. Label all process motor wires to yard equipment
in handholes and manholes.

3.05 TESTS & SETTINGS

A.

Provide the services of an independent Testing Agency to perform the specified
tests for the following systems:

1. Ground resistance. The Testing Company shall perform all testing in
accordance with National Electrical Testing Association (NETA)
standards and procedures. All testing results shall be submitted on NETA
forms and the testing data shall be certified by the respective Agency. Test
results shall indicate recommended action for a sub-par test results.
Results shall list recommended test values that should be obtained for new
installation.

Provide necessary material, equipment, labor and technical supervision to perform
and complete the Electrical Acceptance Tests as required.

Acceptance tests as herein specified are defined as those tests and inspections
required to determine that the equipment involved is acceptable as delivered to the
job Site, that the equipment may be energized for final operational tests and is in
accordance with the Specifications.

Final acceptance of the equipment and/or workmanship will depend upon
performance characteristics as determined by the subject tests, in addition to
complete operation tests, on all electrical equipment to show that it will perform
the functions for which it was designed.

If the test and inspection data submitted should indicate deficiencies in the
operation of the electrical apparatus or in the manufacturer thereof, the Contractor
shall promptly implement the necessary adjustments, corrections, modifications
and/or replacements necessary to be made to meet the specified requirements.

Upon completion of the remedial Work, the Testing Agency shall repeat all of the
tests on components previously found deficient on the first test or any additional
test if they be required. It shall be the responsibility and obligation of the
Contractor to have all remedial Work accomplished as may be required by second
and/or additional tests.

COMMON WORK RESULTS FOR ELECTRICAL

WOODARD & CURRAN 26 05 00-13

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

3.06 CLEANING

A. When all Work is completed and has been tested and accepted by the Owner’s
Representative, the Contractor shall clean all light fixtures, equipment, and
exposed surfaces that have been directly affected by this Work.

END OF SECTION

COMMON WORK RESULTS FOR ELECTRICAL
WOODARD & CURRAN 26 05 00-14

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

SECTION 26 05 19

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 —- GENERAL
1.01 DESCRIPTION OF WORK

A. The Contractor shall provide the labor, tools, equipment, and materials necessary
to install wires, cables, and connectors in accordance with the plans and as
specified herein.

B. This section includes wires, cables, and connectors for power, lighting, signal,
control, communications and related systems rated 600 volts and less.

1.02 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and
Supplementary Conditions and Division 1 specification sections, apply to this
section.

B. Related Sections

1. Division 26: Section 26 05 00 COMMON WORK RESULTS FOR
ELECTRICAL

1.03 QUALITY ASSURANCE
A. Reference Standards.

B. | NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) 70 "NATIONAL
ELECTRICAL CODE (NEC)

C. UNDERWRITER'S LABORATORIES, INC. (UL) COMPLIANCE
1. UL Standard 83 Thermoplastic Insulated Wires and Cables

2. UL Standard 486A Wire Connectors and Soldering Lugs for Use with
Copper Conductors

3. UL Standard 854 Service Entrance Cable

D. NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
COMPLIANCE

1. WC-S5 Thermoplastic Insulated Wire and Cable for the Transmission and
Distribution of Electrical Energy

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
WOODARD & CURRAN 26 05 19-1

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

2. WC-7 Cross Linked Thermosetting Polyethylene Insulated Wire and Cable
for the Transmission and Distribution of Electrical Energy

3. WC-8 Ethylene Propylene Rubber Insulated Wire and Cable for the
Transmission and Distribution of Electrical Energy

E. INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE)

COMPLIANCE
1. Standard 82 Test Procedure for Impulse Voltage Tests on Insulated
Conductors

1.04 SUBMITTALS

A. Furnish manufacturer's product data, test reports, and materials certifications as
required.
B. Submit the following in accordance with Conditions of Contract and Division 26

specification sections:

1. Product data for electrical wires, cables, and connectors.
2. Product data for Megger insulation testing instrument.
3. Report sheets for Megger testing.

1.05 DELIVERY, STORAGE, AND HANDLING:

A. Deliver wire and cable properly packaged in factory fabricated type containers, or
wound on NEMA specified type wire and cable reels.

B. Store wire and cable in clean dry space in original containers. Protect products
from weather, damaging fumes, construction debris, and traffic.

PART 2 - PRODUCTS
2.01 MATERIALS

A. General

1. Provide factory-fabricated wires of sizes, ampacity ratings, and materials
for applications and services indicated. Where not indicated, provide
proper wire selection as determined by Installer to comply with project's
installation requirements, NEC and NEMA standards. Select from the
following UL types those wires with construction features which fulfill
project requirements:

2. Provide color-coding for phase identification as specified herein.

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
WOODARD & CURRAN 26 05 19-2

Project Number: 228730
Issue Date: August 2017

3.

WWTE SCADA Upgrades
Nashua, NH

Provide factory applied nylon or polyvinyl chloride (PVC) external jackets
on wires and cables for pulls in raceways over 100 feet in length, for pulls
in raceways with more than three equivalent 90 degree bends, for pulls in
conduits underground or under slabs on grade, and where indicated.

B. Service & Distribution Wiring

1.

2.

3.

4.

98 percent conductivity copper
600 volt insulation, type XHHW
ULL. listed for underground use in wet locations at 75° C.

Use XHHW for #4 and larger and THHN/THWN or XHHW for #6 and
smaller.

C. Branch-Circuit Wiring

1.

2.

5.
6.
D. Splices

1.

98 percent conductivity copper

600 volt insulation, type, THWN/THHN, or XHHW

Stranded conductor: #14 AWG and larger

Minimum branch circuit: #12 AWG

Minimum #10 AWG for 120 volt circuits more than 100 feet long.

Minimum #10 AWG for 277 volt circuits more than 230 feet long.

No. 10 and smaller with 600-volt pressure type insulated connector of
wire-nut type, or equal; soldered and crimped type not allowed. Ideal type
“wire nut” Buchanan type “B-Cap” and Minnesota Mining (3M) type
“Scotchlok”.

No. 8 and larger with solderless lugs or solderless connectors of Lock-tite
or similar type properly taped with plastic insulating tape, Minnesota
Mining Co. #33, or equal, then two half-lap servings of friction tape,
Manson, or equal.’

Wire connector systems for use with underground conductors shall be UL
listed specifically for such use.

Service entrance conductors shall be installed without splices. Electrical
equipment feeders shall be spliced only where shown or specifically

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

WOODARD & CURRAN 26 05 19-3

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

approved. Control and metering conductors shall be installed without
splices.

5. All splices shall be made only by specific permission of the Engineer and
then only in manholes or pull boxes and shall be sealed watertight with a
heat-shrunk insulation.

6. Tighten electrical connectors and terminals in accordance with
manufacturer’s published torque tightening values. Where manufacture’s
torqueing requirements are not indicated, tighten connectors and terminals
to comply with tightening torques specified in UL Standards 486A and
A86B.

7. Use UL listed splice for all underground wires, ducts buried, in conduit
and in ducts. Connectors and splices shall be waterproof.

PART 3 —- EXECUTION

3.01 WIRE AND CABLE INSTALLATION

A.

All wire and cables shall be installed in conduit of size and type indicated on the
drawing and specifications.

Install electrical cables, wires, and connectors in compliance with NEC.

Pull conductors simultaneously where more than one is being installed in same
raceway. Use UL listed pulling compound or lubricant, where necessary.

Use pulling means including, fish tape, cable, rope, and basket weave wire/cable
grips which will not damage cables or raceways. Do not use rope hitches for
pulling attachment to wire or cable.

Conceal all cable in finished spaces.

Install exposed cable parallel and perpendicular to surfaces or exposed structural
members, and follow surface contours, where possible.

Conductors shall be sized such that voltage drop does not exceed 3 percent for
branch circuits or 5 percent for feeder/branch circuit combination.

Provide adequate length of conductors within electrical enclosures and train the
conductors to terminal points with no excess. Bundle multiple conductors, with
conductors larger than No. 10 AWG cabled in individual circuits. Make
terminations so there is no bare conductor at the terminal.

All feeder and branch circuit wiring shall be color coded at all termination and
splice locations. System neutrals shall be designated in addition to phase
conductors. Equipment grounds shall be green.

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

WOODARD & CURRAN 26 05 19-4

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

J.

The number of conductors shown on the Drawings is not necessarily the correct
number required. As many conductors as are required in each case shall be
installed. In general, grounding conductors are not scheduled.

In general, wiring for the following systems shall be installed in separate conduits.
Do not mix categories in a single raceway.

1. 120 volt power wiring.
2. 120 volt control wiring, including, digital input and output signals.
3. 24 volt DC control wiring, including, digital input and output signals.

4. 24 volt DC analog control wiring (4-20mA).
5. Communications wiring.

6. Special & Emergency Systems

3.02 FIELD QUALITY CONTROL

A.

The Contractor shall test each electrical circuit after permanent cables are in place
with terminators installed, but before cable or wire is connected to equipment or
devices to demonstrate that each circuit is free from improper grounds and short
circuits.

The Contractor shall Megger Test, the insulation resistance between phases and
from each phase to ground for each of the following feeder and motor branch
circuits:

1. Secondary Service Entrance

2. Electrical Distribution Equipment (Main Circuit Breaker, Motor Control
Center, Panelboards, etc.)

3. Transformers
4. Motors
All Megger testing shall be provided to the Engineer.

Measure the insulation resistance with a digital "Megger" insulation testing
instrument in accordance with manufacturer’s recommendations. All test
instruments are to be provided by the Contractor.

If any insulation resistance measures less than 50 megohms, the cable shall be
considered faulty with the cable failing the insulation test. In moist environments,
bag the ends of the cable to prevent a faulty Megger test.

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

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Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

F. Any cable which fails the insulation tests or which fails when tested under full
load conditions shall be replaced with new cable for the full length and retested at
no additional cost to Owner.

G. The below grade service or feeder splice shall be water immersion Megger tested.
Each splice shall be immersed in a grounded water immersion bath for 24
continuous hours prior to and during the test. Criteria for failure shall be as
described for cable above.

END OF SECTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
WOODARD & CURRAN 26 05 19-6

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

SECTION 26 05 26

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1-— GENERAL

1.01 DESCRIPTION OF WORK

A.

Provide all labor, tools, equipment, materials and appurtenances necessary to
furnish and install grounding materials in accordance with the Drawings and as
specified herein. This section includes solid grounding of electrical systems and
equipment.

1.02 REFERENCES

A.

The publications listed below form a part of this specification to the extent
referenced. The publications are referred to within the text by the basic
designation only. Unless otherwise noted, the most recent version of the listed
publications, including revisions, at time of bid opening shall apply.

NATIONAL ELECTRICAL CODE (NEC), as applicable to electrical grounding
and bonding, Art. 250.

UNDERWRITERS' LABORATORIES, INC. (UL)
1. UL 467 Electrical Grounding and Bonding Equipment

INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE)
IEEE 81 AND 142

1. 1-1983 TEEE Guide for Measuring Earth Resistivity, Ground Impedance,
and Earth Surface Potentials of a Grounded System (Part 1)

2. 141-1993 IEEE Recommended Practice for Electric Power Distribution
for Industrial Plants

3. 142-1991 IEEE Recommended Practice for Grounding of Industrial and
Commercial Power Systems

1.03 SUBMITTALS

A.

B.

All submittals shall have pertinent numerical data and information specified in the
"English" language using "English" units. The submittals shall include but are not
limited to the following in addition to General Requirements.

Product Data

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

WOODARD & CURRAN 26 05 26-1

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

1. Provide product data for all grounding equipment and appurtenances,
including but not limited to; wires, connectors, lugs, clamps, ground rods,
bonding jumpers and accessories.

PART 2-— PRODUCTS

2.01 GENERAL

A.

Provide electrical grounding system with assembly of materials required for
complete installation including wires/cables, connectors, lugs, clamps, ground
rods, bonding jumpers and accessories.

Provide electrical grounding conductors for grounding connections matched to
power supply wiring materials and sized according to NEC.

Provide electrical connectors, lugs, clamps, boding jumpers and accessories as
recommended by the respective manufacturer for the particular application, unless
other indicated.

Ground Rods: Solid copper clad, 5/8-inch diameter by 10 feet long.

Insulated Conductors: Green in color.

Ground Bus. Bare annealed copper bars of rectangular cross section, ¥-inch x 3-
inch x length as required, with 98 percent conductivity, rigidly attached to

structure.

Bonding Strap Conductor/Connectors: Soft copper, 0.05 inch thick and 2-inches
wide, except as indicated.

Pressure Connectors: High conductivity plated units.
Bolted Clamps: Heavy-duty units listed for the application.

Exothermic Welded Connections: Provided in kit form and selected for the
specific types, sizes, and combinations of conductors and other items to be
connected.

PART 3 — EXECUTION

3.01 GROUNDING & BONDING

A.

Ground main service entrance ground bus or lug to neutral of incoming service, to
enclosure and to ground rod. Install grounding bushings or service conduits. Use
exothermic style ground connections to the ground rod. Use of conduit system for
ground conductor shall not be allowed.

Provide and install 600 volt insulated bonding conductors throughout the
distribution system with connection to bonding (or grounding) terminal on each

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

WOODARD & CURRAN 26 05 26-2