Do transformers have dedicated working clearances like electrical panels and other switch-gear? The required clearances (for ventilation purposes) of a transformer are specified by the manufacturer. Can a transformer be installed in a dedicated 1-hour fire rated room with 1-foot of space behind the transformer and 1-foot of space on the left side and 1-foot on the right side and 3-feet in the front. This transformer will have a rating of greater than 112.5 kVA. A lot of times architects and the interior designers just don't want to spare any room for electrical equipment. Thank you.