I am installing a new electric stove in a 20 year old condo. The existing BX cable has only 2 wires and both are hot legs. Do I need a ground wire or can I use the BX armor as the ground??
2014 NEC 250.118.10 all 3 examples of using Metal Clad include the use of a grounded conductor. In the 2014 NEC handbook 330.108 states. "the interlocked sheath cable construction is not recognized as an EGC." so it would not be lega. A discrete conductor is needed for the Equipment Grounding Conductor.