article 344. rigid metal conduit 344.20 trade size … 3… · article 344. rigid metal conduit...
Post on 19-Aug-2018
217 Views
Preview:
TRANSCRIPT
Article 344. Rigid Metal Conduit
Part I. General
344.2 Definition
RMC is a listed metal raceway of circular cross section with integral or associated couplings, listed for the installation of electrical conductors and used with listed fittings to provide electrical continuity.
Part II. Installation
344.20 Trade Size
(A) Minimum. Trade size ½.(B) Maximum. Trade size 6.
344.30 Secured and Supported
(A) Securely Fastened.
344.30 Secured and Supported
(B) Supports.(1) RMC must be supported at intervals not
exceeding 10 ft.
344.30 Secured and Supported
(B) Supports.(2) Straight Horizontal Runs.
344.30 Secured and Supported
(B) Supports.(3) Vertical Risers.
344.30 Secured and Supported
(C) Unsupported Raceways.
top related