Q. In general, a disconnecting means is required for each sign and outline lighting system or feeder circuit and branch circuit supplying a sign or outline lighting system per 600.6. When is a disconnecting means not required per 600.6?

  1. When the sign is an exit directional sign supplied by batteries.
  2. When the sign is cord-connected with an attachment plug.
  3. When the sign is an exit directional sign located within a building.
  4. Both B and C.
Answer: D

Exception No. 1 and Exception No. 2 of 600.6 permit the disconnecting means to be omitted.

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.