AugieI would think the LV gear could be placed anywhere you desired as long as 110.26 and 230.21(C) were addressed.
Are we able to separate the transformer & switchgear If we have electrical unit substation in very tight space ? If yes, could the LV switchgear be aligned to the wall?
Please advise for the new arrangement.
LV Switchgear - not switchboard - do need rear access, with the exception of Eatons front accessible dear, so they would not normally be lined up 'against' the wall.
Metal-Enclosed Power Switchgear. A switchgear assembly completely enclosed on all sides and top with sheet metal (except for ventilating openings and inspection windows) containing primary power circuit switching, interrupting devices, or both, with buses and connections. The assembly may include control and auxiliary devices. Access to the interior of the enclosure is provided by doors, removable covers, or both.
Switchboard. A large single panel, frame, or assembly of panels on which are mounted on the face, back, or both, switches, overcurrent and other protective devices, buses, and usually instruments. Switchboards are generally accessible from the rear as well as from the front and are not intended to be installed in cabinets.
I would think the switchboard the one that needs rear access From article 100.
So, the one which is included in unit substations is considered as switchboard not LV gear, isn't?