California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 5 - Electrical Safety Orders
Group 2 - High-Voltage Electrical Safety Orders
Article 10 - Conduit
Section 2761 - Rigid Metal Conduit
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Use. Rigid metal conduit shall be permitted to be used under all atmospheric conditions and occupancies, provided conduits and fittings exposed to the weather or to severe corrosive influences are of corrosion-resistant material or have coatings inside and outside suitable for the conditions. Where dissimilar metals are used, they shall be joined by an approved device or method.
(Title 24, Part 3, Section 3-346 - 1.)
(b) Running Threads. Running threads shall not be used.
(Title 24, Part 3, Section 3-346 - 9(b).)
(c) Support. Conduit shall be supported at least every 10 feet. However, rigid metallic runs of conduit made up with approved threaded couplings and uninterrupted by pull boxes shall be permitted to be secured in accordance with Table 2, provided such fastening prevents transmission of stresses to terminus when conduit is deflected between supports.
Table 2761
| Conduit Size | Maximum Distance Between Conduit Supports | |
| 1/2 inch | 10 feet | |
| 3/4 inch | 10 feet | |
| 1 inch | 12 feet | |
| 1 1/4 inch | 14 feet | |
| 1 1/2 inch | 14 feet | |
| 2 inch | 16 feet | |
| 2 1/2 inch | 16 feet | |
| 3 inch and larger | 20 feet | |
(Title 24, Part 3, Section 3-346 - 12.)
1. Editorial correction filed 11-2-83 (Register 83, No. 45).
2. Amendment filed 12-10-87; operative 1-9-88 (Register 88, No. 1).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.
