(1)
Where a generator intended to supply emergency power for lighting, fire safety and life safety systems is located in a building, it shall be located in a room that,
(a)
is separated from the remainder of the building by a fire separation with a fire-resistance rating not less than
(i)
1 h, if the floor assembly is not required to have a fire-resistance rating of more than 1 h, and
(ii)
2 h, if the floor assembly is required to have a fire-resistance rating of more than 1 h, and
(b)
contains only the generating set and equipment that is related to the emergency power supply system.