This is in an apartment building that was built around 1960. The tap goes over about 2 feet to the house panel. It all looks to be original which made me wonder if double taps like this were allowed at one time.
View attachment 7290
breaker on house panel sized appropriately for the reduced gauge wire?
in 1960 the 6' feeder and tap rule woulda been what they'd a gone by, i think......
old guys used to say that with stranded wire, you could put more than
one conductor into a lug, as it was just more stranding, where solid
conductors, you would have something that could wiggle.... and that made
sense to me, as long as you had all the stranding fully thru the lug, etc.
normally tho, you'd use a double lug, or two lugs, facing back to back on
the binding post.... if there was room....