I am working on a school renovation and consversion of a middle school to an elementary and the old 1930's and 50's parts were razed and the 1995 gym and class rooms addition was left standing and new parts were added to the 1995 part to make a new building. The existing boxes and conduit where left remaining ( wire and devices removed) in the 1995 part and I see no evidence of grounding pigtails and I had to retrofit the boxes with ground pigtail clips when I installed devices. Did the NEC in 1995 require metal box pigtails for bonding?
