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Subchapter 5. Electrical Safety Orders
Group 1. Low-Voltage Electrical Safety Orders
Article 77. Data Processing Systems

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§2565.2. Supply Circuits and Interconnecting Cables.

(a) Branch-Circuit Conductors. The branch-circuit conductors to which one or more units of a data processing system are connected to a source of supply shall have an ampacity not less than 125 percent of the total connected load.

(b) Connecting Cables. The data processing system shall be permitted to be connected by means of computer or data processing cable or flexible cord and an attachment plug cap or cord-set assembly specifically approved as a part of the data processing system. Separate units shall be permitted to be interconnected by means of flexible cords and cables specifically approved as part of the data processing system. When run on the surface of the floor, they shall be protected against physical damage.

(c) Under Raised Floors. Power cables, communications cables and interconnecting cables associated with the data processing equipment shall be permitted under a raised floor provided:

  (1) The raised floor is of suitable construction.  

  (2) The branch-circuit supply conductors to receptacles are in rigid metal conduit, intermediate metal conduit, electrical metallic tubing, metal wireway, metal surface raceway with metal cover, flexible metal conduit, liquidtight flexible metal conduit, mineral-insulated, metal-sheathed cable, metal-clad cable, or Type AC cable.  

  (3) Ventilation in the underfloor area is used for the data processing equipment and data processing area only.  

  (Title 24, Part 3, Section 645.2.)  

     Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.  

1. Amendment filed 2-1-83; effective thirtieth day thereafter (Register 83, No. 6).

2. Editorial correction filed 11-2-83 (Register 83, No. 45)

3. Repealer and new section filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).

4. Editorial correction redesignating erroneous subsection (e) as subsection (c)(3) (Register 2008, No. 29).

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