B.08.03 Amendment 0004 Tech Specs 22R00001.pdf

Little Goose DC System & LV Switchgear Upgrade W912EF22R0001 Amend - 0004

LGA455595DCLVSU

PROJECT TABLE OF CONTENTS

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

00 01 15.00 28 LIST OF DRAWINGS

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00.00 28 GENERAL REQUIREMENTS

01 11 00.00 28 SUMMARY OF WORK

01 11 01.00 28 SUPPLEMENTARY REQUIREMENTS

01 12 16.00 28 WORK SEQUENCE

01 14 00.10 28 PROJECT SITE RESTRICTIONS

01 14 00.90 28 INTEGRATING ANTITERRORISM (AT) AND OPERATIONS SECURITY

(OPSEC)

01 22 00.00 28 MEASUREMENT AND PAYMENT

01 32 01.00 28 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 29.10 28 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 01.00 28 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 45 04.00 28 CONTRACTOR QUALITY CONTROL

01 51 00.00 28 TEMPORARY UTILITIES

01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

01 57 20.00 28 ENVIRONMENTAL PROTECTION

01 78 00.00 28 CLOSEOUT SUBMITTALS

01 78 23.00 28 OPERATION AND MAINTENANCE DATA

DIVISION 02 - EXISTING CONDITIONS

02 41 00.00 28 DEMOLITION

02 83 33.12 28 LEAD BASED PAINT (LBP) REMOVAL AND DISPOSAL

DIVISION 03 - CONCRETE

03 60 00.01 28 CONCRETE DEMOLITION, REPAIR OF CONCRETE SURFACES, AND

MINOR EQUIPMENT FOUNDATIONS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 41 16.00 28 PLASTIC-LAMINATE-CLAD ARCHITECTURAL CABINETS

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 84 00.00 28 FIRESTOPPING

DIVISION 08 - OPENINGS

08 11 13.00 28 STEEL DOORS AND FRAMES

08 71 00.00 28 DOOR HARDWARE

DIVISION 09 - FINISHES

09 67 23.13 28 EPOXY FLOORING

09 90 00.00 28 PAINTS AND COATINGS

DIVISION 13 - SPECIAL CONSTRUCTION

13 48 00.00 26 SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT

Amendment - 0004 PROJECT TABLE OF CONTENTS Page 1

Little Goose DC System & LV Switchgear Upgrade

DIVISION 22 - PLUMBING

22 00 00.00 28 PLUMBING, GENERAL PURPOSE

22 15 13.16 26 COMPRESSED-AIR PIPING, PIPING COMPONENTS, AND VALVES

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

23 00 00.00 28 MECHANICAL GENERAL REQUIREMENTS

23 05 24.00 28 METAL SUPPORTS FOR MECHANICAL SYSTEMS

23 05 93.00 28 TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 30 00.00 28 HVAC AIR DISTRIBUTION

23 34 00.00 28 FANS

DIVISION 25 - INTEGRATED AUTOMATION

25 05 11.00 28 CYBERSECURITY

DIVISION 26 - ELECTRICAL

26 05 00.00 28 BASIC ELECTRICAL MATERIALS AND METHODS

26 05 13.00 28 MEDIUM-VOLTAGE CABLE

26 05 19.00 28 INSULATED WIRE AND CABLE

26 05 26.00 28 GROUNDING

26 05 36.00 28 CABLE TRAYS FOR ELECTRICAL SYSTEMS

26 08 00.00 28 APPARATUS INSPECTION AND TESTING

26 08 01.00 28 SYSTEMS TESTING AND COMMISSIONING

26 23 10.10 28 480 VOLT SWITCHGEAR AND TRANSFORMERS

26 24 19.00 28 MOTOR CONTROL CENTERS

26 28 00.00 28 SWITCHBOARDS AND PANELBOARDS

26 32 34.00 26 BATTERIES

26 32 36.00 26 BATTERY CHARGERS AND INVERTERS

DIVISION 27 - COMMUNICATIONS

27 21 10.00 26 FIBER OPTIC DATA TRANSMISSION SYSTEM

DIVISION 40 - PROCESS INTERCONNECTIONS

40 95 00.00 26 PROGRAMMABLE LOGIC CONTROLLER HARDWARE AND PANELS

DIVISION 41 - MATERIAL PROCESSING AND HANDLING EQUIPMENT

41 22 13.19 26 BATTERY LIFTING DEVICE

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SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 05 00.00 28

BASIC ELECTRICAL MATERIALS AND METHODS

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 GENERAL REQUIREMENTS

1.4.1 Materials, Equipment and Installation

1.4.2 Standard Products

1.4.3 Environmental Requirements

1.4.4 Storage and Handling

1.4.5 Corrosion Prevention

1.5 CONTRACT DRAWINGS

1.5.1 General

1.5.2 Departure From Drawings

1.6 BATTERY ROOM LIGHTS

1.7 WORKMANSHIP

1.8 FINAL APPROVED VERSIONS OF CONTRACTOR PREPARED DRAWINGS

1.9 DATA FOR ARC FLASH STUDY

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.1.1 Compliance with Standards

2.1.2 Standard Products

2.2 CONDUIT, RACEWAYS, DUCTS, FITTINGS AND HANGERS

2.2.1 Rigid Metal Conduit

2.2.2 Liquid-Tight Flexible Metal Conduit

2.2.3 Non-Metallic Wiring Duct (Channel)

2.2.4 Rigid Metallic Conduit Fittings

2.2.5 Flexible Conduit Fittings

2.2.6 Conduit Hangers

2.2.7 Wire Ways

2.3 BOXES, CABINETS, AND ENCLOSURES

2.3.1 General

2.3.2 Steel Cabinets and Boxes

2.3.3 Design of Conduit Pull Boxes

2.3.4 Doors, Covers, Cabinet Trim and Hardware

2.3.5 Paint

2.4 RECEPTACLES

2.5 SAFETY SWITCHES

2.6 CONTROL EQUIPMENT

2.6.1 Terminal Blocks

2.6.1.1 Markings

2.6.1.2 Control Signal Type

2.6.1.3 Short-Circuiting Type

2.6.1.4 Power Terminal Blocks

SECTION 26 05 00.00 28 Page 1

W912EF22R0001 Amend - 000 4

2.6.1.5 Rail Terminal Blocks

2.6.1.6 Marking

2.6.2 Control, Instrument, and Selector Switches

2.6.2.1 General

2.6.2.2 Control Switches

2.6.2.3 Instrument Switches

2.6.2.4 Selector Switches

2.6.3 Relays

2.6.3.1 General

2.6.3.2 Control Relays

2.6.3.3 Interposing Relays

2.6.4 Indicating Lamp Assemblies

2.7 ESCUTCHEONS AND NAMEPLATES

2.8 INDICATING INSTRUMENTS

2.8.1 Ammeters

2.8.2 Voltmeters

2.9 MIMIC BUS

2.10 TEST SWITCHES

2.11 SWITCHBOARD TERMINATIONS

2.12 MANUFACTURER'S NAMEPLATE

2.13 VAPOR TIGHT LED LIGHTING FIXTURES

2.13.1 Design Requirements

2.13.2 LED Lamps

2.13.3 Suspended Fixture Hangers

2.14 GOVERNOR OIL PUMP MOTORS

2.15 GOVERNOR OIL PUMP CONTROLLER

2.15.1 Settings

2.16 ISOLATION VOLTAGE TRANSFORMERS

2.17 SPARE PARTS

PART 3 EXECUTION

3.1 PREPARATION

3.2 SEISMIC REQUIREMENTS

3.3 Constraints and Outages

3.4 REMOVAL

3.5 INSTALLATION

3.5.1 Conduit System Installation

3.5.1.1 General

3.5.1.2 Thread Compound

3.5.1.3 Liquid-Tight Flexible Conduit

3.5.1.4 Cutting and Threading

3.5.1.5 Bends

3.5.1.6 Expansion Fittings

3.5.1.7 Coordination

3.5.1.8 Termination of Conduit

3.5.1.9 Grounding and Bonding of Conduit

3.5.1.10 Conduit Cleaning

3.5.1.11 Conduit Labeling

3.5.1.12 Conduit Inspection

3.5.2 Wiring

3.5.3 Box And Fittings

3.5.3.1 General

3.5.3.2 Installation

3.5.4 Nameplate Mounting

3.5.5 Identification Plates And Warnings

3.5.6 Posted Operating Instructions

3.5.7 Mimic Bus Mounting

3.6 SAFETY SWITCH INSTALLATION

SECTION 26 05 00.00 28 Page 2 Amendment - 0004

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Amendment-0004 - Paragraph 2.14

3.7 PAINTING

3.7.1 New Equipment

3.7.2 Existing Equipment

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SECTION 26 05 00.00 28 Page 4

SECTION 26 05 00.00 28

BASIC ELECTRICAL MATERIALS AND METHODS

PART 1 GENERAL

1.1 SCOPE

This section applies to the electrical features associated with the powerhouse, and where other features refer to this section, including, but not limited to, Section 26 05 13.00 28 , MEDIUM-VOLTAGE CABLE, Section 26 05 19.00 28 , INSULATED WIRE AND CABLE, Section 26 05 26.00 28 , GROUNDING, Section 26 08 01.00 28 , SYSTEM TESTING AND COMMISSIONING, Section 26 23 10.10 28 , 480 VOLTAGE SWITCHGEAR AND TRANSFORMER, Section 26 24 19.00 28 , MOTOR CONTROL CENTERS, Section 26 28 00.00 28 , SWITCHBOARDS AND PANELBOARDS, Section 26 32 34.00 26 , BATTERIES, Section 26 32 36.00 26 , BATTERY CHARGERS AND INVERTERS, Section 27 21 10.00 26 , FIBER OPTIC DATA TRANSMISSION SYSTEM, Section 40 95 00.00 26 , PROGRAMMABLE LOGIC CONTROLLER HARDWARE AND PANELS, and Section 23 00 00.00 28

MECHANICAL GENERAL REQUIREMENTS.

1.2 REFERENCES

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI C80.1 (2005) American National Standard for Electrical Rigid Steel Conduit (ERSC)

NEMA FB 1 (2014) Standard for Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit, Electrical Metallic Tubing, and Cable

NEMA KS 1 (2013) Enclosed and Miscellaneous Distribution Equipment Switches (600 V Maximum)

NEMA 250 (2018) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA ICS 1 (2000; R 2015) Standard for Industrial Control and Systems: General Requirements

NEMA ICS 2 (2000; R 2005; Errata 2008) Industrial Control and Systems Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 5 (2017) Industrial Control and Systems:

Control Circuit and Pilot Devices

NEMA WD 6 (2012) Wiring Devices Dimensions Specifications

UNDERWRITERS LABORATORIES (UL)

UL 6 (2007; Reprint Nov 2014) Electrical Rigid Metal Conduit-Steel

SECTION 26 05 00.00 28 Page 5

UL 870 (2008; Reprint Feb 2013) Standard for Wireways, Auxiliary Gutters, and Associated Fittings

UL 94 (2013; Reprint Mar 2016) UL Standard for Safety Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

UL 360 (2013; Reprint Jan 2015) Liquid-Tight Flexible Steel Conduit

UL 514B (2012; Reprint Nov 2014) Conduit, Tubing and Cable Fittings

UL 1565 (2013) Standard for Safety Positioning Devices

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C39.1 (1981; R 1992) Requirements for Electrical Analog Indicating Instruments

ANSI Z535.1 (2006; R 2011) American National Standard for Safety--Color Code

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017) National Electrical Code

ASTM INTERNATIONAL (ASTM)

ASTM A1011/A1011M (2018a) Standard Specification for Steel Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C2 (2017) National Electrical Safety Code

IEEE C37.90 (2005; R 2011) Standard for Relays and Relay Systems Associated With Electric Power Apparatus

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2016) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM D709 (2016) Standard Specification for Laminated Thermosetting Materials

SECTION 26 05 00.00 28 Page 6

NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION (NECA)

NECA 1 (2015) Standard for Good Workmanship in Electrical Construction

NECA 101 (2013) Standard for Installing Steel Conduits (Rigid, IMC, EMT)

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. A designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following must be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

SD-01 Preconstruction Submittals

Equipment Crate Size, Storage Location And Proposed Routing At Site ;

G, EL

SD-02 Shop Drawings

New Motor Brackets ; G, EL

Battery Room Lights ; G, EL

SD-03 Product Data

Within 60 calendar days after Notice to Proceed , submit complete descriptive literature and specifications of each product or system of products listed with original, legible manufacturer's cut sheets and data sheets to clearly indicate physical construction, operation, electrical characteristics, ratings, and associated hardware, as applicable. Include manufacturer's catalog numbers and designations, and clearly cross-reference with shop drawings as appropriate. Product data submitted for approval must clearly show conformance with these specifications, including, but not being limited to, product manufacturers' declarations of conformance to applicable technical standards. Product data must be approved prior to procurement of associated materials and equipment.

Rigid Metal Conduit ; I, HDC, EL

Liquid-Tight Flexible Metal Conduit ; I, HDC, EL

Non-Metallic Wiring Duct (Channel) ; I, HDC, EL

Rigid Metallic Conduit Fittings ; I, HDC, EL

Flexible Conduit Fittings ; I, HDC, EL

Conduit Hangers ; I, HDC, EL

Wire Ways ; I, HDC, EL

Receptacles ; G, HDC, EL

SECTION 26 05 00.00 28 Page 7

Safety Switches ; G, HDC, EL

Control, Instrument, and Selector Switches ; G, HDC, EL

Terminal Blocks ; G, HDC, EL

Control Relays ; G, HDC, EL

Indicating Lamp Assemblies ; G, HDC, EL

Escutcheons and Nameplates ; G, HDC, EL

Indicating Instruments ; G, HDC, EL

Governor Oil Pump Controller ; G, HDC, EL

Boxes, Cabinets, And Enclosures ; G, EL

Mimic Bus ; G, EL

Interposing Relays ; I, EL

Vapor Tight Led Lighting Fixtures ; G, EL

Test Switches ; G, EL

Governor Oil Pump Motors ; G, EL

SD-08 Manufacturer's Instructions

Spare Parts ; G, EL

SD-11 Closeout Submittals

Data For Arc Flash Study ; G, EL

1.4 GENERAL REQUIREMENTS

1.4.1 Materials, Equipment and Installation

New and unused materials and equipment must be furnished and any defective material or equipment damaged in the course of installation must be replaced or repaired. The removal of electrical equipment includes the disconnection of existing conduits, associated wiring, and cables. In some cases existing wiring and cables disconnected will be removed and replaced with new materials. Existing conduits are to be reused as shown on the drawings; or as approved by the COR. Testing must be performed to check the installation of and the proper operational functions of the accessory electrical equipment per SECTION 26 08 01.00 28 SYSTEMS TESTING AND COMMISSIONING. The installations must be in accordance with the National Electrical Code, NFPA 70 , and the National Electrical Safety Code, IEEE C2 , except where otherwise specifically shown or specified, in which case the drawings and specifications govern. Omission of details on the drawings or in the specifications cannot be construed as permitting deviations from Code requirements.

SECTION 26 05 00.00 28 Page 8

1.4.2 Standard Products

Material and equipment must be the standard products of manufacturers regularly engaged in the manufacture of these products and must essentially duplicate items that have been in satisfactory use for at least 5 years prior to proposal due date.

1.4.3 Environmental Requirements

Communication, control, and protective equipment must be rated for continuous operation in ambient environmental conditions of 0 degrees C to 50 degrees C (32 degrees F to 120 degrees F), and 0 percent to 90 percent relative humidity, noncondensing. Power equipment must be rated as required in these specifications.

1.4.4 Storage and Handling

Ship all Electrical equipment as completely assembled and wired as feasible so as to require a minimum of installation work. Protect all electrical material and equipment delivered to site, until immediately prior to installation, from damaging environmental and construction activities. Control equipment includes, but not be limited to; relaying equipment, meters, wire and cables, fiber optic equipment, and various types of switches. The above equipment and devices must be kept dry and free from precipitation and condensation during storage, installation, and after installation. Store all electrical equipment in accordance with the manufacturer's recommendations to prevent damage. Equipment Crate Size, Storage Location and Proposed Routing at Site for on-site storage and routing will be subject to approval by the Contracting Officer. The Contractor is responsible for energizing the heaters mounted in the equipment or to provide other means as required to avoid damage to the equipment due to humidity, weather, and other damaging environmental activities.

1.4.5 Corrosion Prevention

Protect equipment to prevent deterioration from corrosion. The general requirements are specified below; however, other corrosion-resisting treatments that are the equivalent of those specified may be used.

a. Fastenings and Fittings. Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous fastening devices and fittings must be of corrosion-resistant material or treated in an approved manner to render them resistant to corrosion. Fasteners exposed directly to the weather must be of corrosion-resisting material.

b. Corrosion-Resisting Materials. Corrosion-resisting steel, copper, brass, bronze, copper-nickel-copper alloys are acceptable corrosion-resisting materials.

c. Corrosion-Resisting Treatments. Treatments must be in accordance with ASTM A123/A123M or ASTM A153/A153M .

d. Finish: Final painting must be done in accordance with paragraph

PAINTING.

SECTION 26 05 00.00 28 Page 9

1.5 CONTRACT DRAWINGS

1.5.1 General

a. The contract drawings indicate the work to be accomplished in as much detail as is practical. Except for such modifications as may be required for coordination with equipment actually furnished, they constitute the working drawings for construction and for purchase of required materials. The contract drawings must be superseded by manufacturer's shop drawings when available.

b. Field verify all existing dimensions, details, and features relevant to requirements for equipment, apparatus, and other coordinating features required for the design, manufacture, and installation of the new equipment and accessories.

1.5.2 Departure From Drawings

If departures from the contract drawings are necessary, details of such departures and reasons for them must be submitted not later than 30 days before scheduled installation date. No such departures will be made without prior written approval. The control schemes shown on the contract drawings are not intended to exclude the Contractor's method for accomplishing the functions indicated. However, if any alternate equipment is approved, the Contractor must bear the cost and be responsible for furnishing and installing any additional wiring devices that are required.

1.6 BATTERY ROOM LIGHTS

Replace and relocate battery room light fixture locations as to not be over the battery racks as shown in the plan drawings. These light fixtures shall be brand new as stated in the product submittal Vapor Tight LED Lighting Fixtures . Shop drawings for approval to include conduit, cable and enclosure hardware.

1.7 WORKMANSHIP

Complete all work in a neat and workmanlike manner conforming to the best modern practice in the class of work regardless of any omission in the drawings and specifications. Accepted industry practices are as described in NECA 1 and other ANSI approved installation standards.

1.8 FINAL APPROVED VERSIONS OF CONTRACTOR PREPARED DRAWINGS

Submit Final approved versions of Contractor prepared drawings in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES. Update Contractor's prepared drawings if there are any outstanding comments.

Immediately record any modifications to approved Contractor prepared drawings made during fabrication and installation for inclusion into final versions of Contractor prepared drawings. Insert a set of 11 by 17 inch final approved versions of Contractor prepared drawings in the operation and maintenance manuals.

1.9 DATA FOR ARC FLASH STUDY

Submit data for both AC and DC equipment for an arc flash study to be performed by others. For each piece of equipment, submit the following data in a tabular format.

SECTION 26 05 00.00 28 Page 10

1. Cables over 120 Volts

a. Size

b. Copper or aluminum

c. Type of insulation

d. Separate phases, bundled phases, or bus

e. Magnetic or non-magnetic raceway

f. Length, rounded to nearest 50 feet

2. Protective devices over 120 Volts

a. Trip settings

b. Interrupt and trip ratings

c. Brand and model

d. Fuse, molded-case breaker, etc.

3. Transformers

a. Percent impedance

b. kVA

c. Dry or oil

d. Tap settings

e. Voltages

f. Delta or wye

4. Motor loads

a. Horsepower

b. Power factor

5. Switchgear and motor control centers

a. Short-circuit rating

b. Continuous current rating

c. Switchboard/panelboard information

d. Type and size of enclosure (open air/box)

e. Bus configuration

f. Bucket sizes

6. DC Switchboards and Panelboards

a. Short-circuit rating

b. Continuous current rating

7. Starters:

a. Does it prevent the motor from back-feeding power to the fault location?

b. Does the motor load have a variable frequency drive or soft starter?

8. Data for battery and charging systems

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.1.1 Compliance with Standards

Equipment shall be new and meet all applicable NEMA and UL construction and rating requirements. No equivalent will be acceptable. Immediately notify the Contracting Officer of any requirements of the specifications or Contractor proposed materials or assemblies that do not comply with UL or NEMA. International Electrotechnical Commission (IEC) rated equipment will not be considered an acceptable alternative to specified NEMA ratings.

SECTION 26 05 00.00 28 Page 11

2.1.2 Standard Products

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship, and have been in satisfactory industrial use for 5 years prior to bid opening including applications of equipment and materials under similar circumstances and of similar size.

2.2 CONDUIT, RACEWAYS, DUCTS, FITTINGS AND HANGERS

2.2.1 Rigid Metal Conduit

Rigid metal conduit, including couplings, shall conform to UL 6 and/or ANSI C80.1 and must be zinc-coated both inside and outside by hot-dip galvanizing method.

2.2.2 Liquid-Tight Flexible Metal Conduit

Liquid-tight flexible metal conduit shall be made from steel strip that is zinc-coated by the hot-dip galvanizing method with an integral or separate bonding wire or and water-proof extruded PVC cover and conforming to UL 360 .

2.2.3 Non-Metallic Wiring Duct (Channel)

Non-metallic wiring duct (channel)shall be two piece construction, halogen free with a a flame class of V-0 as specified in UL 94 and have a UL recognized for continuous use temperature of 95 degrees Celsius conforming to UL 1565 . Ducts shall have an open slotted base with solid snap-on cover.

2.2.4 Rigid Metallic Conduit Fittings

Threaded fittings for rigid conduit shall be made of solid zinc or malleable iron and listed to UL 514B and/or NEMA FB 1 . Threadless fittings shall not be used. Malleable iron fittings must be zinc-coated both inside and outside by hot-dip galvanizing method. Hubs must have a grounding screw on the locknut. Expansion fittings must have a maximum of 4 inches of travel and have external flexible copper braid bonding jumper.

2.2.5 Flexible Conduit Fittings

Flexible conduit fittings shall be made from steel or malleable iron with a zinc coating for flexible metal conduit with positive bonding, and conforming to UL 514B .

2.2.6 Conduit Hangers

Conduit hangers shall be fabricated from two or more galvanized steel hanger rods, a galvanized steel horizontal member, clamps, and other attachments as necessary for securing hanger rods and conduits. Hanger rods must not be smaller than 3/8-inch diameter and threaded either full length or for a sufficient distance at each end to permit at least 1-1/2 inches of adjustment. The horizontal member must be manufactured from hot rolled carbon steel with a galvanized finish conforming to ASTM A1011/A1011M . Hangers must be designed for hanging conduit. Conduit strut brackets must be made from a minimum of 12 gauge, hot rolled carbon steel with a galvanized finish conforming to ASTM A1011/A1011M .

SECTION 26 05 00.00 28 Page 12

2.2.7 Wire Ways

Metallic wire ways shall be galvanized with knockouts. Wire ways shall have hinge/screw covers conforming to UL 870 .

2.3 BOXES, CABINETS, AND ENCLOSURES

2.3.1 General

Provide special boxes, enclosures, cabinets, and wireway as shown and specified herein. Boxes of 170 cubic inches interior volume or less are considered as conduit outlet boxes. All boxes, cabinets, and enclosures having an interior volume in excess of 170 cubic inches will be considered to be special insofar as compliance with these specifications is concerned. Conduit entrance locations are to be detailed on the drawings or as required. Supply brackets for mounting of internal equipment. Shop drawings submitted for special cast and sheet metal boxes and enclosures must indicate the internal volume and the contract drawing sheet on which the individual assemblies are shown. Cabinet and enclosure type must conform to NEMA 250. Submit Manufacturer's descriptive literature for all equipment.

2.3.2 Steel Cabinets and Boxes

Steel cabinets, junction, pull boxes, and other steel boxes and enclosures and their doors and trim must conform to Underwriter's Laboratories, Inc., Standard UL 50 for Cabinets and Boxes except as noted below. Sheet steel used in cabinets, special boxes or enclosures, be not lighter than No. 12 U.S. Standard gage, and cover fastening screws placed not more than eight inches apart along the perimeter of a box. Special steel boxes, cabinets, doors, and covers must be made of galvanized sheet steel or hot-dip galvanized after fabrication. Junction and pull boxes must be furnished with covers of the same gage metal as the box. Hubs must be provided where required by the type of enclosure. T & B "Bullet Hub" or Myers "Scru-tite" fittings or equivalent that are vibration proof, have grounding screw, captive O-ring gasket, no welds, insulated throat and have controlled lengths must be used. Concentric ring knockouts will not be allowed for conduit entrances. Galvanizing damaged during fabrication or field installation or drilling must be repaired. Where standard NEMA type enclosures are not indicated on the drawings, control cabinets and other surface mounted enclosures must be NEMA Type 12 as modified herein.

Holes will be permitted in NEMA Type 12 enclosures for mounting provisions and for cover mounted devices. Doors, handles, trim, panels and gutters must be furnished as specified or shown.

2.3.3 Design of Conduit Pull Boxes

The following simplified rules are for use with conductors covered with accepted jacket materials per SECTION 26 05 19.00 28 :

a. When odd sized dimensions are obtained the next larger standard size should be used. References to conduit diameter should be used as trade size.

b. Straight Pulls: The length of the box should not be less than 12 inches or 12 times the diameter of the largest conduit, whichever is greatest. The width should not be less than the sum of the locknut diameters plus 1/2 inch between adjacent conduits and between locknuts and box edges. The depth should not be less than 4 inches for conduits

SECTION 26 05 00.00 28 Page 13 up to 2 inches in size and two times diameter for all others.

c. Angle Pulls: The length of the box should not be less than 12 inches or 8 times the diameter of the largest conduit, whichever is greatest. The distance should be increased for additional conduits by the sum of the diameters of the conduits entering the same side of the box. Where conductors turn 90 degrees and parallel to the cover the box length and width should be equal and the depth should be determined the same as for straight pulls. Where the conductors turn 90 degrees in a plane perpendicular to the cover the width should be determined the same as for straight pulls and the depths should be equal to the length.

2.3.4 Doors, Covers, Cabinet Trim and Hardware

Each door must be equipped with flush or semi-concealed hinges and, if the height exceeds 36 inches, with a vault type handle and a three point catch. NEMA Type 12 enclosures must have hinged covers and be modified to have door handles equipped with three point catches in lieu of retained fasteners. Except for panelboard cabinets, double doors or doors in pairs must be provided wherever the width of a door opening exceeds 24 inches or the height of the opening exceeds 36 inches. Locks must be provided for cabinets in which 250 Volt DC, 125 Volt DC, 120/208 Volt AC or 277/480 Volt AC equipment is exposed when the door is open. Locksets and latchsets must conform to ANSI/BHMA A156.2, Series 4000, Grade 2, and be UL listed.

Locksets and cores must be made by the same manufacturer to maintain complete lockset warranty. The locksets must be cylindrical type and be master keyed to Lower Monumental Dam's existing master key system using 7-pin interchangeable cores. Two control keys for the removal of the interchangeable cores of the master key system and two master keys for the locks of each cabinet must be furnished. Identifying nameplates must be provided on the front of the doors with designations as shown in the contract drawings.

2.3.5 Paint

Paint must be quick air-drying lacquer or synthetic enamel with semigloss finish, ANSI No. 61 light gray in color. Lead-based paints can not be used.

2.4 RECEPTACLES

Receptacles shall be industrial grade, NEMA 5-20R receptacles, 20A, 125 VAC, 2-pole, 3-wire duplex or NEMA 5-30R receptacles, 30A, 125 VAC, 2-pole, 3-wire duplex conforming to NEMA WD 6 or as required by the contract drawings.

2.5 SAFETY SWITCHES

Safety switches shall comply with NEMA KS 1, and be the heavy-duty type with NEMA 12 enclosure, rated 140VDC, 5 amps, 2 poles and fused. Ensure switch construction is such that, when the switch handle in the "ON" position, the cover or door cannot be opened. Cover release device is coinproof and so constructed that an external tool is used to open the cover. Make provisions to lock the handle in the "OFF" position. Ensure the switch is not capable of being locked in the "ON" position.

Safety switches shall be of the quick-make, quick-break type and have terminal lugs for use with copper conductors.

SECTION 26 05 00.00 28 Page 14

Ensure safety color coding for identification of safety switches conforms to ANSI Z535.1 .

2.6 CONTROL EQUIPMENT

2.6.1 Terminal Blocks

2.6.1.1 Markings

Each connected terminal must have the circuit designation or wire number marked on or near the terminal in permanent contrasting color. White or other light-colored plastic marking strips, fastened by screws to each terminal block, must be provided for control wire designations. The manufacturer's wire number and the Government's wire number must both be shown for each connected terminal on the marking strips with permanent marking fluid. The marking strips must be reversible to permit marking both sides, or two marking strips must be furnished with each block, to accommodate the two sets of wire numbers.

2.6.1.2 Control Signal Type

Provide control signal type terminal blocks of double row terminal type rated for 600 volts and 30 amps. Terminals must be plated brass with #8-32 phil-slot screws that can accept lugs with a maximum width of 0.42-inches.

2.6.1.3 Short-Circuiting Type

Provide short-circuiting type terminal blocks for all current transformer secondary leads with provisions for shorting together all leads from each current transformer without opening any circuit. Short-circuiting the terminals of only one current transformer must not short-circuit the terminals of any other current transformer.

2.6.1.4 Power Terminal Blocks

Provide power distribution blocks for branch circuits and feeders 600 volts and less, with a minimum rating of 30 amps and accommodate wire size #12 AWG and larger. Power distribution blocks must be double row type and have lugs suitable for copper conductors, must be two-pole for single-phase circuits (phase and neutral conductors, or two phase conductors), and three-pole for three-phase circuits (three phase conductors). Three-phase four-wire circuits, where used, must have a three-pole block for the phase conductors and a single-pole block for the neutral, which must be mounted next to the block for the phase conductors.

For conductors rated more than 50 amperes, screws must have hexagonal heads. Conducting parts between connected terminals must have adequate contact surface and cross-section to operate without overheating.

2.6.1.5 Rail Terminal Blocks

Terminal blocks as shown on the contract drawings must be modular, rail mounted devices, rated not less than 600 Volts and 20 Amperes. Individual terminal block thickness must not exceed 0.24 inch. The terminal connections must be pressure type with length and space for connection of at least two No. 14 AWG stranded conductors on each end of the feed-through. The terminal contacts must be designed to prevent the terminated wires from being loosened by vibration or by normal pulling forces. Mounting rails and end covers must be provided for the terminal

SECTION 26 05 00.00 28 Page 15 block assemblies. White or other light colored marking strips, must be provided for circuit designation. Each connected terminal of each block must have the circuit designation or wire number placed on the marking strip with permanent marking fluid. Twenty percent reversible or spare marking strips must be furnished. Terminal blocks must be Entrelec or approved equal that meets or exceeds the salient characteristics described above.

2.6.1.6 Marking

White or other light-colored plastic marking strips, fastened by screws to each terminal block, must be provided for wire designations. Marking strips for rail terminal blocks may be fastened by another means than screws. The manufacturer's wire number and the Government's wire number must both be shown for each connected terminal on the marking strips with permanent marking fluid. The marking strips must be reversible to permit marking both sides, or two marking strips must be furnished with each block, to accommodate the two sets of wire numbers.

2.6.2 Control, Instrument, and Selector Switches

2.6.2.1 General

Control, instrument and selector switches shall be of the rotary switchboard type with handles on the front and operating contact mechanisms on the rear of the panels, rated for alternating-current operation at 600 V, or direct-current operation at 250 V, as applicable, in accordance with the switch development specified in the contract drawings. All switches and contacts must be capable of satisfactorily withstanding a life test of at least 10,000 operations with rated current flowing in the switch contacts, and must be capable of continuously carrying 20 A without exceeding a temperature rise of more than 30 degrees C above ambient. Each switch provided must have ample contact stages including spare contacts to perform the functions of the control system.

Contacts of switches must be self-aligning and must operate with a wiping action. A positive means of maintaining high pressure on closed contacts must be provided. Compression springs or pivoted joints must not be depended upon to carry current. The covers or plates on the switches must be readily removable for inspection of contacts. Each switch must be provided with an escutcheon clearly marked to show each operating position. Switch identifications and handle positions must be engraved on escutcheons or may be provided on separate nameplates. Switches must be provided with black oval handles unless otherwise specified on the contract drawings.

2.6.2.2 Control Switches

Control switches shall be two or three-position momentary-contact type with spring return to neutral position with black pistol-grip handles or as required by the contract drawings.

2.6.2.3 Instrument Switches

Instrument switches shall be the maintained-contact type with the required number of positions. Ammeter switches must not open the secondary circuits of current transformers at any time.

SECTION 26 05 00.00 28 Page 16

2.6.2.4 Selector Switches

Selector switches shall be of the maintained-contact type, remaining in the last position until deliberately moved to another position unless shown otherwise on the contract drawings.

2.6.3 Relays

2.6.3.1 General

For all relays, where equipment ratings are not compatible, the Contractor must provide whether or not shown, the necessary interposing relays for a compatible interface with the government-furnished equipment.

Manufacturer's descriptive literature must be submitted for approval for all relays per paragraph "SUBMITTALS". Relays must meet the applicable requirements of IEEE C37.90 , NEMA ICS 1 , NEMA ICS 2 , and NEMA ICS 5 .

2.6.3.2 Control Relays

Provide control relays designed for panel mounting, with the capability of add-on contact blocks conforming to NEMA ICS 5 . Relays incorporating plug-in modules will not be acceptable. The contact class and rating designations must be A600 for AC control circuit contacts, and P600 for DC control circuit contacts. The Auxiliary relay salient physical, functional, or performance characteristics an equal item must meet to be acceptable are as follows:

a. Have convertible contacts.

b. Have contacts that are double break and silver alloy.

c. Have contacts that are convertible from normally open to normally closed or vice versa.

d. Have contacts that are color coded to indicate status.

e. Are expandable from 2 poles to 12 poles.

f. Have accessories to provide pneumatic timing and mechanical latching provisions as needed.

g. Have coils that are molded construction and continuous duty rated.

h. Have transient suppressor accessory available.

i. Coil for use in 125V dc circuits must be designed to operate at 140V dc continuously.

2.6.3.3 Interposing Relays

Interposing relays must be of the electrically operated, magnetically held type, and have a coil rated for operation at 125 VDC. Contact rating must be 10 amperes at 600VDC and have a NEMA N150 P600 designation.

Interposing relays that control SQO, SQ1, and SQ2 breaker trip and close from the SCADA PLC output module must be installed only in the SQOC, SQ1C, and SQ2C Cabinets.

SECTION 26 05 00.00 28 Page 17

2.6.4 Indicating Lamp Assemblies

Indicating lamp assemblies shall be of the LED switchboard type, rated for 125V dc and 120V ac service, with appropriate colored caps. The lamp assemblies must be a minimum of 1-inch diameter and the LED must be long-life LED type with a minimum normal life span of 50,000 hours. Color caps must be made of material, which will not be softened by the heat from the lamps. Indicating lights must be visible from at least 20 ft. away.

Lamps must be replaceable from the front of the panels, and any special tools required for lamp replacement must be furnished. All color caps must be similar and interchangeable, and all lamps must be same type and rating.

2.7 ESCUTCHEONS AND NAMEPLATES

a. Provide nameplates made from melamine plastic conforming to

ASTM D709.

b. Nameplates must be 0.125 inch thick, black with white center core.

Surface must be matte finish. Corners must be square. Accurately align lettering and engrave into the core. Minimum size of nameplates must be 1 inch by 2.5 inches. Lettering must be a minimum of 0.25 inch high, normal block style.

c. Plates must be fastened with black-finished or silver-finished, corrosion-resisting, round-head machine screws or approved nonadhesive metal fasteners.

d. Spare locations, such as spare breakers, must have blank nameplates installed, that can be engraved in the future.

2.8 INDICATING INSTRUMENTS

Electrical indicating instruments shall be of the switchboard type conforming to the applicable requirements of ANSI C39.1 and the accuracy rating must be within 1 percent of full-scale value. The instruments must be back-connected semiflush mounting. Instruments must be 4-1/4 inch square and have a 101 segment 285° circular LED bar array display.

Indicating instruments shall also have an integral digital readout located at the bottom of the instrument with a 3-1/2 digit display. Instrument cases must be dust tight with shadow-proof covers and anti-glare windows.

Taut-band suspension must be provided where this design is available.

Zero adjustments accessible from the front without removal of covers must be provided for instruments with spring control. AC instruments must be designed and calibrated for use on 60-Hz circuits and for operation from 120-volt secondaries of voltage transformers and 5-ampere secondaries of current transformers, as shown. AC instrument potential coils must be designed for continuous operation at 150-volts, and AC instrument current coils must be capable of withstanding 40 times rated current for two seconds. Instrument identification legends must be neatly printed on the dials or on separate legend plates inside the cases. Instrument scales must be as specified, or as approved if scales are not specified, and appropriate for the application.

2.8.1 Ammeters

Full-load current shall be indicated by the pointer at approximately 75 percent of the full-scale range.

SECTION 26 05 00.00 28 Page 18

2.8.2 Voltmeters

Voltmeters shall be provided with expanded scales and calibrated to indicate the nominal phase-to-phase voltages at approximately mid-scale.

2.9 MIMIC BUS

Provide Mimic bus as indicated on the drawings to form a single line diagram of the various circuits. Mimic bus must be submitted by the Contractor for approval and be based on the station service one-line drawings and switch layout as shown on the drawings. Mimic bus must be made of anodized aluminum or an approved equal, 3/16 inch by 1/2 inch in size, and be powder-coated or painted in medium blue (approximate RGB value of 0, 0, 255) to represent the 480 volt bus. Samples of mimic bus in the specified color must be submitted for approval of the CO.

2.10 TEST SWITCHES

Relays and metering connected to current transformers must be provided with test switches as shown on the drawings to permit testing without opening current transformer circuits or requiring disconnection of leads from the relay and metering terminals. The switches must be rated for 600 volts and 30 amps and must meet IEEE C37.90. The test switches must be mounted as shown in the drawings. The test switches must be a 10 pole, rear connected, semi-flush mounting, thermo-plastic molded with barriers molded to the base, includes a cover and white numbering for terminal identification. If the test switches are provided as an integral part of a multi-function relay or other equipment, the Test Switches must be identified as such when submitted for approval. Manufacturer's descriptive literature must be submitted for approval.

2.11 SWITCHBOARD TERMINATIONS

Preinsulated confined-crimped ring-tongue terminals or indented ring-tongue terminals must be used on all wires terminated on screw or stud terminals. Terminals must be properly sized for the wire and color coded for different size wire, for easy inspection. All screw terminals must have toothed lock washers and all stud terminals must have contact nuts and either locking nuts or lock washers. Terminal blocks must be as per paragraph "TERMINAL BLOCKS".

2.12 MANUFACTURER'S NAMEPLATE

Ensure each item of equipment has 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 is not acceptable.

2.13 VAPOR TIGHT LED LIGHTING FIXTURES

2.13.1 Design Requirements

Design and furnish enclosed and gasketed vapor tight fluorescent lighting fixtures, four-lamp, nominal four foot length, completely assembled with wiring and mounting devices and ready for installation for the battery room. Submit lighting calculations and lighting drawing details for the battery room. Detail drawings shall be prepared and signed by a Registered Professional Engineer with electrical background. Fixtures shall be designed to be supported by the ceiling. Equip fixtures with the lamps

SECTION 26 05 00.00 28 Page 19 required. Fixtures shall conform to UL 1598. Equip pendant-mounted fixtures with stems and swivel ball-and-socket self-aligning hangers.

2.13.2 LED Lamps

Submit the LED fixture manufacturer's lamp specification information or the actual lamp manufacturer's catalog data with the LED lighting fixture submittal. Provide T8 rapid start lamps rated 32 watts (maximum), 2800 initial lumens (minimum), CRI of 82 (minimum), correlated color temperature of 5000 K, with an average rated life of 40,000 hours.

2.13.3 Suspended Fixture Hangers

Submit the suspended fixture hanger and service cord manufacturer's specification information or the actual suspended fixture hanger and service cord manufacturer's catalog data with the fluorescent lighting fixture submittal. Provide hangers capable of supporting twice the combined weight of fixtures supported by hangers. Provide with swivel hangers to ensure a plumb installation. Provide hangers which allow fixtures to swing within an angle of 45 degrees. Brace pendants to limit swinging, meeting the requirements of Section 13 48 00.00 26, SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT. Provide Type SOOW hard service cord meeting the requirements of Section 26 05 19.00 28, INSULATED WIRE AND CABLE to feed each fixture from the existing ceiling junction box, with a strain relief grip.

2.14 GOVERNOR OIL PUMP MOTORS

a. Provide twelve AC motors rated 480 volt AC, 3-phase, 60 Hz, inverter-duty, squirrel-cage induction type, drip-proof. The motors shall have the following parameters:

Information SU1-SU3 SU4-SU6

Horsepower 125HP 150HP

Current 145A 169A

Design B B

Code G G

Insulation F F

Frame 405VPAZ445TPY 405VPAZ449TS

RPM 1770 1760

Service Factor (SF) 1.15 1.15

Duty Rating Continuous Continuous

Ambient Temperature 40 deg C 40 deg C

b. Provide new motors capable of properly connecting to the existing hydraulic pumps. Furnish the motors with couplers to allow for a

SECTION 26 05 00.00 28 Page 20 Amendment - 0004 g4ecctgh

Amendment-0004 - Section 26 05 00.00 28 - Paragraph 2.14 proper and secure connection such that there is no increase in the amount of system vibration. Submit drawings showing connections and fittings between motors and pumps to verifying proper alignment of equipment.

c. For main units 1-3, provide new motor brackets to replace the existing custom brackets that support each of the 4160V governor oil pump motors. The new brackets must be fabricated to support the new 480V governor oil pump motors to be installed on main units 1-3.

Submit drawings showing the newly designed brackets to ensure the fitting between the motors and the pumps is acceptable and verifying proper alignment of equipment.

2.15 GOVERNOR OIL PUMP CONTROLLER

Controller must be NEMA 4X panel mountable with a display that is able to display values from 999999 to -99999. At least one analog input is required to accept 4-20 mA input signal, this input shall be capable of providing loop power to the transmitter. At least 4 form C digital outputs are required. Digital output contacts must be rated for 1/14 HP (approximately 50 watts) at 125/250 VAC for inductive loads. Provide one additional controller to the Government as a spare.

2.15.1 Settings

Controller must be programmed per the pressure settings shown on contract drawings.

2.16 ISOLATION VOLTAGE TRANSFORMERS

Isolation voltage transformers shall be rated 60 Hz, 120V:120V ratio, 600V insulation, 10kV BIL, 150 VA at 30 degrees ambient, and accuracy class of

0.6 W, 1.2X. Fuses shall be installed in each ungrounded lead and located adjacent to the transformers in an easily accessible place.Polarity marks shall be visually evident and shown on the drawings. Transformers shall be a IEEE C57.13 Group 1 or 2 rating.

2.17 SPARE PARTS

Furnish Spare parts for all equipment included in this contract. Furnish all parts recommended by the equipment manufacturer for spares on hand.

Furnish spare parts required for the maintenance of the equipment operated under normal operating conditions for the first 10 years of service life.

Spare parts required but not limited to:

a. (2) spare safety switches for each type and rating used.

b. (2) spare terminal blocks of each type and rating used.

c. (4) spare control relays of each type and rating used.

d. (2) 14-pole test switch plugs.

e. (4) spare indicator lights

SECTION 26 05 00.00 28 Page 21

PART 3 EXECUTION

3.1 PREPARATION

a. Clean and paint conduit, supports, fittings, cabinets, pull boxes, and racks as specified in Paragraph PAINT.

b. Protect metallic materials against corrosion. Provide equipment enclosures with the standard finish by the manufacturer when used for most indoor installations. Do not use aluminum when in contact with earth or concrete and, where connected to dissimilar metal, protect by approved fittings and treatment. Provide hot-dip galvanized ferrous metals such as, but not limited to, anchors, bolts, braces, boxes, bodies, clamps, fittings, guards, nuts, pins, rods, shims, thimbles, washers, and miscellaneous not of corrosion-resistant steel except where other equivalent protective treatment is specifically approved in writing.

3.2 SEISMIC REQUIREMENTS

The structural design calculations for seismic restraints and detail drawings for electrical conduit and equipment in this section must be developed by the Contractor in accordance with the requirements of Section

13 48 00.00 26 , SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT.

3.3 Constraints and Outages

See section 01 12 16.00 28 WORK SEQUENCE for any work, or outage constraints.

3.4 REMOVAL

Contractor is to take all copper wire that is removed.

3.5 INSTALLATION

3.5.1 Conduit System Installation

3.5.1.1 General

a. Conduit systems must be installed in accordance with NECA 1 and NECA 101. Pull boxes must be furnished and installed, complete with covers, in conduit runs as required by NFPA 70 and good practice in the industry.

b. Do not install crushed or deformed conduit. Avoid trapped conduit runs where possible. Take care to prevent the lodgment of foreign material in the conduit, boxes, fittings, and equipment during the course of construction. Clear any clogged conduit of obstructions or replace conduit.

c. Exposed conduit must be installed to avoid interference with other work. Structural steel must not be cut, drilled or bent to avoid interference except with written approval. Exposed conduit must be installed to conform to the shape of the surface over which it is run and must be installed parallel or perpendicular to walls, structural members, or intersections of vertical planes and ceilings. Supports must be used at entrance or exit from all conduit fittings, boxes, cabinets and changes of direction of conduit.

SECTION 26 05 00.00 28 Page 22

3.5.1.2 Thread Compound

Conduit joints and connections must be made conductive, watertight and rustproof by the application of a blend of colloidal copper and rust inhibitors. Each threaded joint must be thoroughly cleaned to remove all cutting oil before the compound is applied.

3.5.1.3 Liquid-Tight Flexible Conduit

Use of liquid-tight flexible conduit is not permitted unless the Contractor has received written approval from the Government for every instance where liquid-tight flexible conduit is proposed. Liquid-tight flexible conduit that has received written approval must be limited to make electrical connections to vibration-isolated equipment connections and must not exceed 72-inches in length.

3.5.1.4 Cutting and Threading

All cuts must be made with a hacksaw or a cutter-type tool approved for this use. Roller type pipe cutters must not be used on conduits.