Tony D not frm Uzbekis lol

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  1. Ground the 24VDC Power Supply Common?

    Tony D not frm Uzbekis lol replied to Chris Elston's topic in Control Panel Building

    If I rem correctly it is required by the NEC to always ground the secondary on any power supply or transformer 120 volts and below.  My old boss who slept with the NEC code book under his pillow (Jim Grace) stressed this point with me back in the day.