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General nec nfpa 70 code trivia. Giving the electrician an upper edge. Focusing on little known exceptions or obscure code. 
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This is the second part in preparation for the Master journeymans test also known as the Supervisors test. 
31
Source: Data Center Handbook / edited by Hwaiyu Geng. Copyright © 2015 by John WileY & Sons, Inc. All rights reserved 
22
This is DC theory in preparation for the supervisor or master electricians licensing test. Electrical Exam Preparation based on the 2014 NEC, Mike Holts 
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