Grounding Art. 806.03 installation by the utility company. No separate grounding of weatherproof enclosure will be installed, unless it is required by the utility company.
805.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Weatherhead ................................................................................. 1086.02(a)
b.Circuit Breaker and Weatherproof Enclosure ................................ 1086.02(b)
c.Grounding ...................................................................................... 1086.02(c)
d.Wood Pole ......................................................................................... 1069.04 CONSTRUCTION REQUIREMENTS
805.03 Installation. The service installation shall be installed according to the
details shown on the plans. Exceptions will be made to comply with the local utility company’s standard practices. When a service pole is necessary, it shall be installed according to Article 830.03(c).
805.04 Basis of Payment. This work will be paid for at the contract unit price
per each for SERVICE INSTALLATION, of the type specified. Any charges by the utility company to provide electrical service to the service installation will be paid for according to Article 109.05. SECTION 806. GROUNDING
806.01 Description. This work shall consist of furnishing and installing a
grounding electrode(s) and connecting the grounding electrode(s) by means of a grounding electrode conductor.
806.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Grounding Electrode Conductors ................................................... 1087.01(a)
b.Grounding Electrodes .................................................................... 1087.01(b)
c.Access Wells ................................................................................. 1087.01(c) CONSTRUCTION REQUIREMENTS
806.03 Grounding Electrodes. Cast-in-place concrete foundations shall
have a grounding electrode installed through the concrete foundation, as shown on the plans. Other grounding applications shall have a grounding electrode installed 18 in. (450 mm) below grade. The grounding electrode conductor shall be attached to the grounding electrode by a mechanical ground clamp, except in an access well where an exothermic weld connection shall be made. Access well installed grounding electrodes shall be installed 12 in. (300 mm) below grade and filled with crushed stone from 4 in. (100 mm) below the exothermic connection to a point 20 in. (500 mm) below grade. Art. 806.03 Underground Raceways Testing resistance to ground shall be according to Article 801.13(a)(5). If the measured resistance to ground exceeds 10 ohms, additional rods shall be added to the grounding electrode. A maximum number of three rods shall be coupled together. If coupling three rods together does not lower the resistance to 10 ohms, then additional grounding electrodes shall be installed, a minimum of 6 ft (1.8 m) from each other and the initial installation and connected by a grounding electrode conductor to form a ground field. If the resistance to ground still exceeds 10 ohms after three sets of three coupled electrodes have been installed in the ground field or where sub-surface conditions limit the depth to which the grounding electrode(s) can be installed, the Contractor shall contact the Engineer for further instructions.
806.04 Basis of Payment. Installation and testing of the first rod for the
grounding electrode will not be paid for separately, but shall be included in the cost of the item for which it is installed. If additional rods are needed, their installation and testing will be paid for according to Article 109.04. WIREWAY AND CONDUIT SYSTEMS SECTION 810. UNDERGROUND RACEWAYS
810.01 Description. This work shall consist of furnishing and installing
conduit, fittings and accessories as part of raceway either laid in trench, bored and pulled in place, or encased in concrete.
810.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Rigid Metal Conduit ....................................................................... 1088.01(a)
b.Rigid Nonmetallic Conduit ............................................................. 1088.01(b)
c.Coilable Nonmetallic Conduit .......................................................... 1088.01(c)
d.Portland Cement Concrete (Note 1) ....................................................... 1020
e.Underground Cable Marking Tape ..................................................... 1066.05
f.Fine Aggregate .................................................................................. 1003.04
g.Reinforcement Bars .................................................................................. 508 Note 1. Class SI concrete shall be used for encased conduit.
810.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Cable Plow (Note 1)
b.Auger (Note 2) Note 1. The plow shall be capable of plowing a cavity and placing the conduit to the specified depth in a single operation without kinking or otherwise damaging the conduit. Note 2. The auger shall be a remotely steerable, fluid cutting tunneling system. The tunneling system shall be electronically detectable and shall line the tunnel with a clay lining as it tunnels.
Referenced in this section
GROUNDING in other states
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 700–701 of 1,217. View official source ↗