Electrical equipment that may be subject to physical damage requires protection. Metering equipment, CTs & MOCP also have to comply with our POCOs requirements; which are for the most part equal to NEC.
'Usual' protection consists of multiple bollards (4"-6" RGC) w/concrete, spaced to allow full frontal access, and required clearances. Rationalization is that a vehicle cannot fit thru a +/- 3' space between the bollards.
Equipment within active warehouses has either bollards, or 'guardrails' 4'6" from the face of the equipment. The bollard spacing is +/-2'6". All are designed by an Arch or Engineer. The guardrail type are accessed from openings at either end.
Reno:
You asked"I am surprised that none of out 'urban' folks have yet posted a picture of such a situation as this thread describes"
I'll try to get some pics this coming week, time permitting.
