When is a conduit body, such as a capped elbow or a service-entrance elbow that has sufficient size to provide free space for all conductors enclosed in it, not permitted to contain a splice, tap or device?

  1. When the enclosed conductors are 6 AWG or smaller
  2. When the enclosed conductors are 1/0 or larger
  3. When the conduit body is intended only to enable the installation of the raceway
  4. Both A and C above


Answer: D

Short radius conduit bodies have limitations when the intended use is for a splice or tap, or to contain a device [314.16(C)(3)]. The limiting factors are:

  • the enclosed conductors are 6 AWG or smaller,
  • the conduit body is intended only to enable the installation of the raceway, and
  • the conduit body is of sufficient size to provide free space for all conductors enclosed in the conduit body.
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.