CHAPTER 9.3 Facility Grounding Practice
RICHARD B. BERNHARDT, P.E.
John-Winston Engineers & Consultants, Inc. Loch Arbour, New Jersey*
INTRODUCTION
A facility can be defined as something that is built, installed, or established to serve a particular purpose [1]. A facility is usually thought of as a single building or group of buildings. The National Electrical Code (NEC) uses the term premises to refer to a facility when it defines premises wiring as the interior and exterior (facility) wiring, such as power, lighting, control, and signal systems. Premises wiring includes the service and all permanent and temporary wiring between the service and the load equipment. Premises wiring does not include wiring internal to any load equipment. This ...
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