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When labeling non arc rated MCCs, we:
Use labels based on a device upstream from the MCC
Use 2 labels, feeder label based on the main, main label based on a device upstream from the MCC
It depends on the situation
You may select 1 option

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 Post subject: Arc Flash Labels - Motor Control Centers
PostPosted: Sun Sep 11, 2011 3:58 pm 
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Joined: Mon Sep 17, 2007 5:00 pm
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Location: Scottsdale, Arizona
This week's question regarding motor control centers was brought up at an IEEE 1584 meeting earlier this year.

When labeling non arc rated motor control centers, we :

  • Label based on a protective device upstream from the MCC
  • Use 1 label for feeders based on the main and 1 for the main based on an upstream device
  • It depends on the MCC design

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Jim Phillips, P.E.
Brainfiller.com


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