Answer:
True. The armor of type AC cable is recognized by the NEC as an equipment grounding conductor. This is because the armor is made of a conductive material, such as steel or aluminum, and it is continuous along the entire length of the cable. The armor provides an effective path for fault current to flow, which helps to protect people and equipment from electrical hazards.
Step-by-step explanation:
Here is a quote from the National Electrical Code (NEC):
250.118 Equipment Grounding Conductors—Other Than Flexible Metal Conduit.
(8) Armored Cable. The armor of AC cable shall be permitted to serve as an equipment grounding conductor where the cable is installed in accordance with 320.108.
This means that the armor of type AC cable can be used as an equipment grounding conductor, but only if the cable is installed in accordance with Article 320 of the NEC.