A quick glance at my 1978 does not show the 6'7" rule. Somewhere I have a 1984, but ain't seen it in awhile.just had a job to replace a meter and mast due to damage. the old monster fusible disconnect inside nippled to the panel has a handle that is 6'9" . its existing and I hope I dont get corrected on it. wonder how old the requirement is? This was installed around 1964 or so.