Wisconsin WisDOT Standard Specifications (within FDM) — Section 656

Effective with the December 2018 Letting 481 2019 Standard Spec ifications Section 656 Electrical Service

656.1Description

(1)This section describes providi ng an electrical service, of the specified type.

656.2Materials

656.2.1 General

(1)Install the electrical service conforming to local utility req uirements. Furnish the utility with a wiring

affidavit certifying that the service conforms to the WSEC and then verbally notify the engineer that the utility received the wiring affidavit.

(2)For grounding electrodes for t he electrical service, use engin eer-approved 5/8-inch diameter copper

clad grounding electrodes. Furni sh the number and length of gro unding electrodes as required to install the service conforming to the WSEC and the local utilit y.

(3)If required by the local utility , provide a manual bypass mete r socket. Obtain the local utility's approval

of the manual bypass meter socket.

(4)If an overhead service is required, provide the riser, weather head, wiring, and necessary fittings as

incidental to the electrical service bid item. 656.2.2 Meter Socket Service

(1)Furnish an engineer-approved service ha ving a meter socket, NE MA 3R breaker enclosure, 22,000-

AIC circuit breakers unless the local utility requires otherwis e, grounding electrodes and connections, conduit and fittings, and necessary conductors and equipment re quired by the WSEC and the utility for a service connection. Use circuit breakers with an amperage cap acity of 50 A, unless specified otherwise in the contract. 656.2.3 Meter Breaker Pedestal Service

(1)Furnish an engineer-approvedse rvice having a meter breaker pe destal, 22,000-AIC circuit breakers

unless the local utility requires otherwise, grounding electrodes and connections, conduit and fittings, and necessary conductors and equi pment required by the WSEC and the utility for a service connection. Use circuit breakers with an amperage capacity 50 A , unless specified otherwise in the contract. When the meter breaker pedestal is energized, install an engineer-approved meter seal at access points on the meter trough. 656.2.4 Unmetered Service

(1)Furnish an engineer-approved service conforming to 656.2.2 , except do not supply a meter socket.

656.2.5 Main Lugs Only Meter Pedestal Service

(1)Furnish an engineer-approvedse rvice having grounding electrodes and connections, conduit and

fittings, and necessary conductors and equipment required by the WSEC and the utility for a service connection. Provide a lug amper age capacity, and the number of phases, and service voltage rating as the plans show. 656.2.6 Breaker Disconnect Box Service

(1)Furnish a 100 A outside rated br eaker box with space for 6 circuits, but no main breaker; to 50 A

single circuit breaker (22, 000 AIC or larger as required by po wer companies), conduit fittings, grounding electrodes, and conne ctions and necessary conductors and equipment required to provide power to the cabinet.

656.3Construction 656.3.1 General

(1)Install the electrical service conforming to local utility req uirements. Furnish the utility with a wiring

affidavit, certifying that the se rvice was installed conforming to the WSEC.

(2)All above ground electrical ser vice conduit and fittings shall be rigid metal conduit.

656.3.2 Service Lateral

(1)The local utility will provide a 100 A, 120/240 volt AC, singl e phase, 3-wire underground electrical

service lateral, unless specified otherwise in the contract doc uments. Arrange and assume responsibility for the timely i nstallation of the service lateral by the utility. Terminate the lateral at a meter socket, meter breaker pedes tal, a NEMA 3R Breaker Enclosu re, or a main lugs only meter pedestal, as the plans show. 656.3.3 Meter Socket Service

(1)If 2 or more grounding electrodes ar e required, space them at least 6 feet apart and drive them near

the termination point. Run a gr ounding conductor, from groundin g electrode to grounding electrode if

Effective with the December 2018 Letting 482 2019 Standard Spec ifications more than one is required. Then , connect to the meter socket an d terminate at the grounding lug in the NEMA 3R Breaker Enclosure. Provi de connections and wiring to pr ovide 120 volt AC power, or as the plans show, to the circuit breakers in the cabinets. If only on e grounding electrode is required, exothermically weld the stranded copper wire to it and then con nect to the grounding lug in the NEMA 3R Breaker Enclosure.

(2)Provide an appropriately sized equipment grounding conductor f rom the grounding lug in the NEMA

3R Breaker Enclosure to an equipment grounding bus mounted in t he control cabinet.

(3)If installing intersection lighting along with the signal installation, feed lighting power to street lights

from a separate circuit breaker. U se a common trip breaker rate d at 15 amps or more. 656.3.4 Meter Breaker Pedestal Service

(1)If 2 or more grounding electrodes ar e required, space them 6 f eet apart and drive them outside the

concrete base and near the electrical service meter breaker pedestal. Run a grounding conductor, from grounding electrode to grounding electrode if more than on e is required. Then, terminate at the grounding lug in the meter breaker pedestal. Provide connections and wiring to provide 120 volt AC power, or as the plans show, to t he circuit breakers in the cab inet. If only one grounding electrode is required, exothermically weld the stranded copper wire to it an d then connect to the grounding lug in the meter breaker pedestal.

(2)Provide an equipment grounding conductor, appropriately sized. Run the conductor from the

grounding lug in the meter breaker pedestal to an equipment grounding bus mounted in the control cabinet.

(3)If providing intersection lighting along with the signal installation, feed lighting power to street lights

from a separate circuit breaker . Use a common trip breaker for 240 volt AC installations. Size the breaker conforming to code requi rements, 15 amp, minimum. 656.3.5 Unmetered Service

(1)Conform to 656.3.3 , except no meter is required.

656.3.6 Main Lugs Only Meter Pedestal Service

(1)Conform to 656.3.4 .

656.3.7 Breaker Disconnect Box Service

(1)Furnish connections and wiring to provide 120 volt AC power to the circuit breaker in the cabinet from

the bus located within the breaker disconnect box.

(2)Furnish connections and wiring to provide 120 volt AC power fr om the bus bar located within the meter

breaker pedestal to the 50 amp single circuit breaker within th e breaker disconnect box and then to the circuit breaker in the control cabinet.

(3)Mount the breaker disconnect box to the cabinet as the planss how.

656.4Measurement

(1)The department will measure the El ectrical Service bid items a s a single lump sum for each service

acceptably completed.

656.5Payment

(1)The department will pay for measured quantities at the contrac t unit price under the following bid

items: ITEM NUMBER DESCRIPTION UNIT

656.0100 Electrical Service Meter Socket (location) LS

656.0200 Electrical Service Meter Breaker Pedestal (location) LS

656.0300 Electrical Service Unmetered (location) LS

656.0400 Electrical Service Main Lugs Only Meter Pedestal (location) LS

656.0500 Electrical Service Breaker Disconnect Box (location) LS

(2)Payment for Electrical Service Meter Socket is full compensati on for providing the meter socket; and

for manual bypass meter socke t, NEMA 3R breaker enclosure, cond uit and fittings, circuit breakers, grounding electrodes and connections.

(3)Payment for Electrical Service Meter Breaker Pedestal is full compensation for providing materials

including the meter breaker pedestal, manual bypass meter socke t, conduit and fittings, circuit breakers, grounding electrodes and connections.

Effective with the December 2018 Letting 483 2019 Standard Spec ifications (4) Payment for Electrical Service Unmetered is full compensation for providing materials including the NEMA 3R breaker enclosure, co nduit and fittings, circuit breake rs, grounding electrodes and connections.

(5)Payment for Electrical Service M ain Lugs Only Meter Pedestal i s full compensation for providing

materials including the main lugs only meter pedestal, disconne ct, manual bypass meter socket, grounding electrodes and connections.

(6)Payment for Electrical Service Breaker Disconnect Box is full compensation for providing materials

including the breaker box, circu it breakers, 10 AWG wire, groun ding electrodes, cadwelding, conduit, fittings, wiring, connections, grounding electrodes and connections; for excavating, bedding, backfilling, and restoration of g round to original condition in cluding any sand, concrete, or other required materials; for disposing of surplus materials.

(7)Coordinate with the engineer to determine how to handle the electrical service lateral installation costs.

If the electrical utility bills the contractor directly, pay th e utility promptly. The department will reimburse the contractor for invoice costs under the Electrical Service L ateral administrative item.

Effective with the December 2018 Letting 484 2019 Standard Spec ifications Section 657 Poles, Arms, Standards, and Bases

657.1Description

(1)This section describes providi ng poles, arms, standards, and b ases for lighting and traffic signals.

657.2Materials

Revise 657.2 to require contractor furnished monotube poles and arms. 657.2.1 Poles 657.2.1.1 General

(1)Furnish poles from the department's QPL. Submit a materials list and accompanying certificate of

compliance certifying that the poles incorporated into the work conform to the specified design criteria and other contract requirements.

(2)Include hand holes with a bolt -on access cover as the plans sh ow. Provide a grounding L-clip welded

directly opposite the hand hole on the in side wall of the pole.

(3)Weld base plates to the pole shaft. Identify the pole type and wall thickness using 1/2-inch lettering

stamped under the hand-hole bef ore galvanizing steel poles.

(4)Complete welding before galvanizing steel poles. Clean exterio r surfaces of steel poles after welding

to ensure they are free of loose rust and mill scale, dirt, oil or grease, and other contaminants before zinc coating. Zinc coat as specified in 641.2.8 . Ensure that the coating is tight, free from rough areas or slag, and presents a uniform appearance. Clean after manufac turing is complete to remove loose and foreign material.

(5)Furnish aluminum or galvanized steel shims matching the pole m aterial.

(6)Furnish identification plaques as the plans show.

657.2.1.2 Monotube Poles

(1)Furnish steel monotube poles zinc coated according to ASTM A123. Design conforming to the edition

of AASHTO design specifications and fatigue category the plans show. 657.2.1.3 Type 2 and 3 Poles

(1)For Types 2 and 3 poles, design support structures conforming to the AASHTO Standard Specification

for Structural Supports for High way Signs, Luminaires, and Traffic Signals as published in the 1994, - A wind speed of 80 mph with a 1.3 gust factor. - Dead and live load related to a 25-foot trombone mast arm wit h 5-section signal head and a pair of twin 15-foot luminaire arms mounted on the pole as the plans show. 657.2.1.4 Other Pole Types

(1)Design support structures, consisting of poles and arms, confo rming to the minimum wall thickness the

plan details show and to AASHTO Standard Specifications for Str uctural Supports for Highway Signs, Luminaires and Traffic Signals, 6th Edition, and Interim Revisi ons. Use a design life of 50 years. Design to withstand a 3 second gu st wind speed of 90 mph. Do no t use the alternative method for wind pressures described in appe ndix C of those AASHTO standard specifications. No fatigue analysis is required.

(2)Construct poles of materials having sufficient rigidity that, with material installed as the plans show, the

centerline of the shaft is vertical. Ensure that lighting poles nominally 40 feet or less in length are made of one piece and round in cross-section.

(3)Incorporate vibration da mpeners as the plans show.

657.2.2 Monotube Arms

(1)Furnish steel monotube arms z inc coated according to ASTM A123. Design conforming to the edition

of AASHTO design specifications and fatigue category the plans show.

(2)Furnish monotube arms from the department's QPL. Submit a materials list and accompanying

certificate of compliance cert ifying that the arms incorporated into the work conform to the specified design criteria and other contract requirements.

1.Furnish a mounting device w elded to the pole end of the mon otube arm that allows the attachment of the

arm to a pole as the plans show.

2.Furnish stiffeners or gussets if required between the arm t ube and the arm mounting device to provide

adequate strength to resist side loads.

3.Furnish a clean, uniform nat ural finish. No paint or other corrosion preventive mai ntenance coating is

required.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 490–492 of 601.

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655 Electrical Wiring

657 Poles, Arms, Standards, and Bases