Can someone please tell me which article in the code covers the use of flex...sometimes called greenfield.I use the 3/8 size for hooking up pumps and relays on residential boilers. Am I required to use anti-shorts sometimes called redheads with flex and where does it state this in the code if so required.Also is there a restriction in the length that can be used.And is a grounding conductor required to be installed in lengths over 6 feet???An associate said if we had to use anti-shorts they would come with the roll of flex when purchased like with BX and MC cables.I always use redheads anyway but couldn't find it in the code book.
