For years I have been able to go from MC to EMT by stripping back the jacket on the MC and changing over with a 1/2" coupling, EMT conn., and MC conn. But this past week I was told that is a violation of the code, because the conductors does not have the markings on the entire lenght of the wire. I have not found anything in the code to say I violated. Can anyone help me with this. Tks. (Hillsborough Cty. FL.)
See 310.11 2008 or 310.120 2011.
310.120 Marking.
(A) Required Information. All conductors and cables
shall be marked to indicate the following information, using
the applicable method described in 310.120(B):
(1) The maximum rated voltage.
(2) The proper type letter or letters for the type of wire or
cable as specified elsewhere in this Code.
(3) The manufacturer?s name, trademark, or other distinctive
marking by which the organization responsible for
the product can be readily identified.
(4) The AWG size or circular mil area.
(B) Method of Marking.
(1) Surface Marking. The following conductors and
cables shall be durably marked on the surface. The AWG
size or circular mil area shall be repeated at intervals not
exceeding 610 mm (24 in.). All other markings shall be
repeated at intervals not exceeding 1.0 m (40 in.).
(1) Single-conductor and multiconductor rubber- and
thermoplastic-insulated wire and cable
(2) Nonmetallic-sheathed cable
(3) Service-entrance cable
(4) Underground feeder and branch-circuit cable
(5) Tray cable
(6) Irrigation cable
(7) Power-limited tray cable
(8) Instrumentation tray cable