26_05_00_REV1_ElectricalBasicMaterialsandMethods.pdf

CAMERON WATER IMPROVEMENTS

ELECTRICAL BASIC MATERIALS AND METHODS 26 05 00 - 1

SECTION 26 05 00 – ELECTRICAL BASIC MATERIALS AND METHODS

Revision 1

PART 1 GENERAL

1.01 SCOPE: The work to be performed under this Section consists of furnishing and installing all materials, equipment, conductors, conduits, boxes, panels, etc. including all fittings and fasteners AS SHOWN ON THE DRAWINGS or specified in this Specification. The work shall include but not be limited to the following items:

A. Modify existing well pump control panel and grounding conductors for the wellhead.

B. Install water system controls between wellhead and tank site.

1.02 MEASUREMENT AND PAYMENT

A. No separate measurement or payment will be made for work specified in this section.

Work covered under this section shall be considered incidental to Section 26 00 00, Electrical General Provisions.

PART 2 PRODUCTS

2.01 CONDUIT: Conduit shall be one of the types listed below, AS SHOWN ON THE

DRAWINGS or as specified herein.

A. Galvanized Rigid Steel Conduit (RSC)

B. Electrical Metallic Tubing (EMT)

C. Rigid Non-Metallic Conduit (PVC) Schedule 40 or 80

D. Liquidtite Flexible Conduit

2.02 CONDUIT FITTINGS:

A. Rigid Steel Conduit: All fittings, locknuts, bushings, condulets, and conduit bodies used with RSC shall be steel.

B. Electrical Metallic Tubing: Fittings used on building exterior conduits shall be raintight, compression type fittings. Fittings used on building interiors may be set-screw type. Fittings 1 1/4 inch and larger shall be insulated throat type or have insulating bushings installed at all terminations.

C. Non-Metallic Rigid Conduit: Conduit shall be Schedule 40 PVC. Where allowed to be run exposed conduit shall be Schedule 80 PVC. Fittings shall be solvent weld type and of the same manufacturer as the conduit. Utility conduit shall meet utility company requirements.

ELECTRICAL BASIC MATERIALS AND METHODS Section 26 05 00-2

D. Liquidtight Flexible Conduit: Fittings shall be steel and shall be straight, 45 degree or 90 degree AS SHOWN ON THE DRAWINGS or as specified in these specifications.

2.03 ELBOWS/SWEEPS: Elbows or sweeps for use with conduit shall be as follows:

A. Rigid steel conduit and EMT may be field bent up to 1 inch trade size. For trade sizes 1 1/4 inch and larger, factory elbows or sweeps shall be used.

B. Rigid non-metallic conduit may be field bent using a "hot-box" where non-standard bends are required. Where standard elbows or sweeps are manufactured, then factory manufactured elbows and sweeps shall be used.

2.04 CONDUIT SUPPORTS:

A. Conduit clamps shall be 2 hole steel or as indicated below:

1. Exposed/Exterior work shall be two-hole steel.

2. Exposed/Interior work may be two-hole stamped.

B. Conduit clamps shall be affixed with sheet metal screws or approved equal in exposed locations.

2.05 WIRE AND CABLE:

A. All conductors shall be copper. Aluminum conductors will not be allowed.

B. All conductors shall have insulation rated for 600 volts minimum and shall be type

"THHN" for above ground work or type "THWN" for below grade work, unless otherwise CALLED FOR ON THE DRAWINGS.

C. All conductors shall have markings indicating manufacturer, "UL" listing identification, insulation type, voltage rating and conductor size in accordance with

National Electrical Code requirements.

D. The minimum conductor size for general power shall be No. 12 AWG. Control conductors may be #14 THWN.

E. Conductors No. 6 AWG smaller shall have continuous factory colored insulation for identification. Conductors No. 4 AWG and larger may be phase taped for identification.

F. The ampacities of conductors shall be based upon NEC Tables 310-16 and their corresponding Notes only. Other tables shall not apply.

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2.06 METER SOCKET : The Main Meter Socket shall be a 200 amp, single phase, 120/240 volt NEMA 3R. It shall be approved by SDG&E and equipped with a 200 amp main circuit Breaker.

2.07 DISTRIBUTION PANEL: The distribution panel shall be complete with equipment ground buss in a Nema 1 enclosure. The panel shall be 100 amp panel surface mount, Square “D” panel capable of accepting 2” diameter rigid metal conduit.

2.08 CIRCUIT BREAKERS: Circuit breakers shall be of the type, size, voltage and trip rating as per the approved design.

A. Two and three pole circuit breakers shall have internal common trip or factory installed handle ties. Field installed handle ties will not be allowed.

B. Circuit breakers shall be of the same manufacturer as the load center or of a manufacturer UL listed and approved for use in that load center by the panel manufacturer. Circuit breakers installed as "back feed mains" shall be affixed to panel bussing by a listed factory provided clip or other approved attachment.

C. "Tandem" or "Piggy-back" style circuit breakers will not be allowed.

2.09 LUGS AND CONNECTORS:

A. Above grade conductors shall use ILSCO type "SPA" connectors for in-line splices, and type "PCT" connectors with insulating covers for “parallel” or multiple conductor splices. Above grade conductors No. 8 AWG and smaller may use 3M

"Scotchlok" connectors (Yellow, Red, Gray, Blue).

B. Below grade conductors shall use ILSCO type "SPA" connectors or type “AS” in-line compression sleeves for in-line splices. In–line splices shall be insulated with ILSCO type “HST” heat shrink tubing with thermoplastic sealant or Scotch “8420” series cold shrink tubing. Below grade conductors No. 8 AWG and smaller may use

"Scotch 3570 Sealing Packs" with Scotchlok “R/Y” connectors. Below grade conductors No. 10 AWG and smaller may use Scotch “DBR-6” splice insulating tubes with Scotchlok “R” connectors.

2.10 OUTLET AND JUNCTION BOXES:

A. Electrical boxes used with conduit shall be galvanized steel, four-inch square or octagonal by minimum of 1- 1/2 inches deep, unless otherwise noted.

B. Boxes installed outside shall be rated Nema 3R or equivalent. Outlet or device boxes shall be cast, moisture proof boxes 2 5/8 inches deep and UL listed for wet and damp locations, or AS CALLED FOR ON THE DRAWINGS. Boxes shall be manufactured by Pass and Seymour, Bell, Slater, or approved equal.

ELECTRICAL BASIC MATERIALS AND METHODS Section 26 05 00-4

2.11 SWITCHES AND RECEPTACLES: Switches and receptacles shall be as follows unless otherwise CALLED FOR ON THE DRAWINGS or specified herein. Switches and receptacles shall be specification grade and shall be "back wired" and listed for use with standed conductors. Device colors shall be "White" unless otherwise noted.

A. Switches:

SPST, 20 Amp., 125-277V. - Leviton No. CSB1-20W

DPST, 20Amp., 125-277V. - Leviton No. CSB2-20W

3-way, 20 Amp., 125-277V. - Leviton No. CSB3-20W

4-way, 20 Amp., 125-277V. - Leviton No. CSB4-20W

B. Power Receptacles:

Receptacle, Duplex, 20 Amp., 125V., NEMA 5-15R - Leviton No. BR20-W

Receptacle, Duplex, 20 Amp., 125V., NEMA 5-2OR - Leviton No. BR20-W

GFI Receptcle, 15 Amp., 125V., NEMA 5-15R - Leviton No.

6599-W

2.12 Electrical pull box (handhole) shall be equal to SD Precast #5E with steel traffic lid and brass lock down bolts. Handholes shall be spaced no further than 450’ wire pull and with no more than 360 degrees of bends, between handholes. Handholes SHALL BE AS

SHOWN ON THE DRAWINGS.

2.13 PUMP MOTOR PROTECTION: Provide Motor saver 233P.

PART 3 EXECUTION

3.01 CONDUIT AND RACEWAYS:

A. All conduit containing conductors shall have bushings on both ends, or fittings having equivalent abrasion protection to protect the conductors.

B. Conduit shall be bent using the proper tools and shall show good workmanship with no kinks or flattening. Metal conduits 1 1/4 inch and larger shall have factory manufactured elbow installed.

Non-Metallic Rigid Conduit shall utilize factory manufactured elbows and sweeps.

Non standard field bends may be made utilizing a "Hot-Box" type of bender with prior approval from the Contracting Officer. If a "Hot-Box" bender is used, the raceway shall not show signs or flattening or kinking. If the raceway does show signs of flattening or kinking, that section of conduit shall be rejected and removed from the jobsite at the end of the work day.

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C. Building conduits shall be installed so that the raceways are level, plumb, and at right angles or parallel to building lines, and with offsets as required.

D. Conduits shall be sized as designed by the contractor and approved by the

Contracting Officer. The minimum size shall be 1/2 inch nominal. Conduits not specifically sized ON THE DRAWINGS shall be sized for a maximum conductor fill per NEC Chapter 9 Tables.

E. Storage/Cleaning: Conduit shall be kept clean and covered while stored or not in use.

All conduits shall be clean prior to installation and prior to installation of conductors.

Conduits requiring cleaning shall be throughly cleaned by swabbing prior to installation.

3.02 CONDUIT SUPPORTS: Conduits shall be supported and/or braced at intervals required by the NEC with clamps, straps or devices as specified in these Specifications.

3.03 CONDUIT SYSTEM:

A. Rigid Steel Conduit (RSC) may be used in all areas, but at minimum shall be used for the following:

1. Exposed exterior work up to 48 inches above grade and exposed interior work up to 24 inches above floor level.

2. All below grade site raceways where buried with a minimum cover of 18 inches or less, unless otherwise noted.

3. AS SHOWN ON THE DRAWINGS or as specified in these specifications.

B. Electrical Metallic Tubing (EMT) may be used for the following:

1. Exposed work above 48 inches on building exteriors.

2. Exposed work above 24 inches on building interiors, where allowed.

3. Raceways run in attics and concealed in walls.

4. AS SHOWN ON THE DRAWINGS or as specified in these specifications.

C. Rigid Non-metallic Conduit (PVC) may be used for the following:

1. Underground feeders.

2. AS SHOWN ON THE DRAWINGS or as specified in these specifications.

D. Liquidtite Flexible Conduit shall be used for the following:

1. Final connections to motors, controls or equipment that vibrates or requires movement for operation or servicing. The length of conduit shall be adequate to

ELECTRICAL BASIC MATERIALS AND METHODS Section 26 05 00-6 reduce vibration or required servicing of equipment without disconnection of the equipment.

2. Final connection to equipment where the conduit runs along the face of the equipment shall be with 90 degree connectors.

3. AS SHOWN ON THE DRAWINGS or specified in these Specifications.

E. Exposed conduits shall be so arranged that conduits do not unnecessarily cross other conduits but run parallel to each other in horizontal or vertical rows. Conduits in exposed areas shall conform to building structural lines.

F. Conduits shall be jointed by approved couplings with ends butted. Raceways shall be securely fastened to the cabinets, pull boxes, terminals, etc., with two locknuts or approved fittings, and the ends shall be equipped with insulating bushings, grounding type bushings or shall have approved terminal fittings. Raceways shall be cut square and shall have ends carefully reamed.

G. Each length of conduit subjected to rough usage and damaged while on the job before installation shall be removed from the premises upon notice.

3.04 CONDUCTORS AND CABLES – GENERAL WIRING:

A. Conductors shall not be double lugged. A properly sized terminal fitting will be provided for every conductor.

B. Skinning or cutting of conductor strands to allow a conductor to fit into a termination device (hair-cutting or ringing) will not be accepted.

C. Where the insulation on conductors is damaged during installation, the conductors so damaged shall be removed and new conductors installed. Covering nicks and cuts in the insulation with tape will not be accepted.

D. Color Coding: All conductors shall be phase/voltage identified at all terminations, junction boxes, pull boxes, or wherever the conductors are accessible. Conductor identification shall be by use of factory colored conductor insulation. Conductors

No. 4 AWG and larger may be identified by use of phase tape. The following colors shall be utilized for conductor identification:

"A" phase Black

"B" phase Red

Neutral White

Equip. Ground Green

E. An equipment grounding conductor shall be installed in all raceways and shall be furnished in all cables.

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F. Conductors shall be looped in all pull, junction, device or splice boxes, both above grade and grade level boxes.

G. Conductor Installation: Every precaution shall be taken to avoid damage to the insulaton or damage to the electrical or mechanical properties of the conductors when installing the conductors in raceways. Care shall be taken to avoid dragging the conductors on the ground during the installation. All raceways shall be clean prior to installing conductors. Approved grips (pulling socks) shall be used in pulling conductors or cables.

3.05 OUTLET AND JUNCTION BOXES:

A. All boxes shall be suitable for the fixtures, switches, receptacles, and wiring method.

B. All metal boxes shall be grounded. Boxes shall be grounded by pigtailing from the equipment grounding conductors in the box to a 10/32 ground screw, ground clip or similar device attached to the box.

C. All boxes shall be sized for the conductor fill.

D. Equipment grounding conductor splices at boxes shall be made using wire nut connectors. Twisting of wires as the means of connecting them will not be accepted.

A pigtail from this connection shall be connected to the box and to any device within the box.

E. All boxes shall be affixed to a building or site structural member for support. Boxes shall not be supported by a raceway unless approved by the Contracting Officer.

Boxes shall be affixed to wood surfaces using No. 10 x 3/4 inch sheet metal screw unless otherwise noted. Where boxes are affixed to surfaces of gypsum board over wood studs or plywood the boxes shall be affixed using No. 10 x 1 1/4 inch sheet metal screws or screws of a required length so that a minimim of 5/8 inch will penetrate the stud or plywood, unless otherwise noted.

3.06 SWITCHES AND RECEPTACLES:

A. Only one wire will be allowed under a termination.

B. Devices with a grounding screw shall be grounded to the box or equipment grounding conductor with a bare or insulated green bonding jumper. Devices with automatic grounding devices are not exempt from this requirement.

C. All conductors in device boxes shall be pigtailed so that removal of the device shall not disconnect phase, neutral and/or grounding conductors continuing on. Pigtails to devices shall be a minimum of six inches in length. Where the device is located on the end of a circuit run pigtailing will not be required.

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D. Location of outlets SHOWN ON THE DRAWINGS is approximate, unless dimensioned. The Contractor shall locate outlets to best serve the intended area and to avoid mechanical and structural interferences. Location of outlets will be approved by the Contracting Officer prior to rough-in wiring.

E. Conductors connecting to switches, receptacles, and other devices shall be connected to the back wired screw terminals. Terminating conductors in the spring-loaded stab-back holes on the rear of the device or wrapping around the binding screw terminals of non-back wired devices will not be accepted.

3.07 INTENT AND LAYOUT: The DRAWINGS and Specifications indicate or show the intent of the work required. It is intended that the work be complete in all respects. The

Contractor shall be responsible for the design and complete, properly operating electrical, electrically operated, and electrically controlled equipment and systems.

3.08 GROUNDING (WELLHEAD/PUMP HOUSE): Bond #8 grounding conductor to well casing.

3.09 PANELS AND PANELBOARDS

A. Well Control Panel: Modift pump control panel AS SHOWN ON THE DRAWINGS

B. Pull Box: Install a #5E grade level pull box outside the concrete pad for the wellhead/pump house. Extend conduit and control conductors from pull box to pump control panel.

C. Pump Saver: Install the pump saver in existing pump control panel.

END OF SECTION 26 05 00