Service Equipment Overcurrent Protection, Part 1

Service Equipment Overcurrent Protection, Part 1

In an industrial facility today, leaving out a power monitoring system when specifying the service equipment is almost always a poor decision.

The NEC requires each ungrounded service conductor to have overload protection [Sec. 230.90]. And you can’t insert an overcurrent protection device in a grounded service conductor unless it simultaneously opens all conductors of the circuit [Sec. 230.90(B)].

Register to view the full article

Register on EC&M and gain access to premium content, including this article and much more.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.