Wireway and Conduit System Art. 1088.01 SECTION 1087. GROUNDING
1087.01 Grounding Materials.
a.Grounding Electrode Conductors. Grounding electrode conductors shall be solid, soft drawn 1/C No. 6 copper and shall be installed according to NEC requirements.
b.Grounding Electrodes. Grounding electrodes shall be copper-clad steel with a minimum copper thickness of 10 mils (0.3 mm) and shall be according to UL 467. Grounding electrodes shall be one piece, sectional (threaded) steel rods not less than 5/8 in. (16 mm) in diameter and 10 ft (3 m) long.
c.Access Wells. Grounding electrode access wells shall be constructed of PVC or composite polyester resin/fiberglass material with a diameter of 8 to 12 in. (200 to 300 mm), a length of 36 in. (900 mm) and a cast iron or composite polyester resin/fiberglass lid, secured via stainless steel hardware. A concrete handhole may be used for the access well according to Article 1088.05. SECTION 1088. WIREWAY AND CONDUIT SYSTEM
1088.01 Electrical Raceway Materials. Electrical raceway materials shall be
as follows.
a.Rigid Metal Conduit. The conduit, after fabrication, shall be thoroughly cleaned and the inside and outside surfaces shall be galvanized. Couplings and conduit bodies shall meet ANSI C80.1 and shall be hot-dip galvanized. Elbows and nipples shall be according to the specifications for conduit. All conduit bodies and couplings for rigid conduit shall be of the threaded type.
1.Rigid Steel Conduit. Rigid steel conduit shall be galvanized and manufactured according to UL 6 and ANSI C80.1.
2.Intermediate Metal Conduit. Intermediate metal conduit shall be manufactured according to UL 1242 and ANSI C80.6. After fabrication, the conduit shall be thoroughly cleaned and the inside and outside surfaces galvanized. Couplings and conduit bodies shall meet ANSI C80.6 and shall be hot- dip galvanized. All conduit bodies and couplings for conduit shall be the threaded type.
3.Coated Galvanized Steel Conduit. The conduit prior to coating shall meet the requirements for rigid metal conduit and be manufactured according to NEMA RN 1.
Referenced in this section
GROUNDING in other states
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 1084–1084 of 1,217. View official source ↗