I have in my collection of electrical memorabilia, a service box that was working and nixed by the city inspector. The house it was in turned into a rental, so it was subject to city inspection. This was about 2007 or so. It was a 30 amp 120 volt (not 120/240) box with an inspection sticker from 1919. It had fused neutrals. Functionally, it was fine as everything in the house worked prior to the power being cut. For some reason the inspector had a cat when he saw it and had the POCO snip the drop.