Question came up this week in reference to having a service outlet near the service equipment. I referred them to section 210.64 and told them one was required, except at a one-family and two-family dwelling. This would be for service equipment installed both inside or outside of a building. If you install a 480 volt service make sure to put in a small step down transformer in order to comply with this section………..
Till next time be safe work safe
Jake