How do I determine what size conduit I need for Ethernet or coaxial cable?Updated 3 months ago

This table provides the initial recommended 40% fill capacity for Ethernet and coaxial cable based on conduit trade size and cable jacket diameter. Take note that conduit less than 3/4” (3/4 trade size) is not recommended for communications cable installation. These figures were derived from the NFPA 70 (National Fire Protection Act) in the National Electric Code (NEC). 

Notes on using this table:

• The cable counts assume straight runs with no bends; you must de-rate in certain circumstances by subtracting cables. If decreasing the count is not feasible, then increase to the next trade size.
• Round up or down cable jacket ODs to match the correct number. For example, if your cable jacket OD is 7.10mm, then use the figure for 7.00mm. If your cable jacket OD is 7.50mm, then use the figure for 8.00mm.

Check out our blog Conduit Fill Chart for Ethernet and Coaxial Cable to learn more!