Article 516 references NFPA 33. NFPA 33 requires bonding and grounding of all metal parts of a spray booth be bonded or grounded for static electricity. NFPA 33 does not reference the size of this conductor nor does it reference using Tables 250.62 or 250.122. NFPA 77 on Static Electricity tells us that regarding this conductor the size does not matter but that it should be stranded or braided for flexability. Does anyone know of any other NFPA publication that can direct me to the proper sizing of this conductor?
