#405: PRO TALK With Electrical Operations Supervisor John Williamson
Ruth Berhane
53 min
Kids
Description
In this Pro-Talk podcast, Mark Petersen talks with John Williamson about the history of the National Electrical Code (NEC) and explains how new codes are created.
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lindy_wood
Episodes
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#405: PRO TALK With Electrical Operations Supervisor John Williamson
Ruth Berhane