I am concerned whether I need to attach the Grounding Bar to the Neutral Bar in my Main Circuit Panel. In my warehouse, the electricity comes through the meter, and at the bottom of this tall Meter Enclosure is a pipe (coming out the side) that attaches to a metal Water Pipe (which is the Main Ground, I believe). Next in the path of electricity is a electrical box that splits the incoming electricity to two electrical circuit panels (one 240/120v and one "Wild Leg" system). The Main Circuit Panel I am concerned with is the 240/120v panel which controls most of the lighting, appliance and outlets in my warehouse (the Wild Leg is at the other end of my warehouse and once used for lathes, grinders, etc...and is a whole other story...). So, in this Main Circuit Panel, the Ground Bar IS NOT ATTACHED to the Neutral Bar, and I fear that this means I have no proper ground for grounded circuits in my warehouse (and, there are no green/ground electrical wires in the Main Circuit Panel anyway, which leads me to believe that all the three-pronged outlets in this warehouse are not properly grounded to begin with!!).
My questions is: should I connect the Grounding Bar to my Neutral Bar? I ask this because I want to add recessed lighting to my kitchen which requires a proper grounding of the system, and I wondering if I should ground the new system within my Main Circuit Panel or whether I should ground the system directly to a water pipe within my warehouse? All the other electric lines are only Hot/Neutral, and since I am working with Romex and 12/2 cable, I'm unclear of the proceedure.
Thank you in advance for your answer(s).