Tony Tomasin wrote:
Do the Part 8 Rules allow flexible metal conduit to be used as an equipment grounding method?
250.118. Types of equipment grounding conductors. The equipment grounding
conductor run with or enclosing the circuit conductors shall be 1 or more or a
combination of the following:
(1) A copper, aluminum, or copper-clad aluminum conductor. This conductor shall
be solid or stranded; insulated, covered, or bare; and, in the form of a wire or a
busbar of any shape.
(2) Rigid metal conduit.
(3) Intermediate metal conduit.
(4) Electrical metallic tubing.
(5) Flexible metallic tubing where the tubing is terminated in listed fittings and
meeting both of the following conditions:
(a) The circuit conductors contained in the tubing are protected by overcurrent
devices rated at 20 amperes or less.
(b) The length of flexible metallic tubing in the ground return path does not exceed
1.8m (6 feet).