Posted by John T on July 21, 2019 at 17:41:34 from (174.196.15.130):
In Reply to: Electrical Question posted by John in La on July 21, 2019 at 15:03:53:
Hey there John, see you in Florida again ??? as a retired power distribution design engineer that story MAKES ME SHIVVER Its NOT the safest or the correct or certainly NOT the NEC approved method.
Chief reason being instead of relying on Billy Bob or Bubba to be sure and remove or shut off that Genset backfeed breaker if its on and the genny is running given the right (wrong) set of circumstances it can kill someone. Similar the genset can be fried !!!!!!!!
Whats safe is a safety lock out slide type mechanism or a proper transfer switch so its impossible to backfeed the main.
SURE it can still "work" the way he does it but its not safe (potential for human mistake) and its not code proper
NEXT TO THE CONNECTED NEUTRALS, here's the deal:
A) If you only switch the Hots, NOT the Neutral, the Genset and Utility Neutrals can be bonded BUT the genset needs to have a FLOATING BEUTRAL
B) If you switch the Hots and the Neutral the Genset needs a Bonded Neutral, configured as a Separate Derived Source" plus connection to a Grounding Electrode
Where life and fire safety are concerned consult current practicing (that's NOT me too long retired) professional engineers and electricians and the NEC and don't risk your life on lay opinions !!!!!!!!!!!!!!!!
John T Too darn long retired EE so no warranty, consult professionals
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