Below is a list of the typical types of plant that you might expect to find at the above:

Refrigeration Plant e.g. Air Conditioning, Freezers, Cold Rooms
Hot Water Heating/Supply Systems
Fork Lift Trucks
Pallet Trucks
Window Cleaning Equipment
Passenger/Goods Lifts
General Electrical/Mechanical Plant e.g. Motors, Pumps
Electrical Installations e.g. Fixed Wiring