Reminder: Never connect a generator to home wiring without transfer switch

Aaron C. de Bruyn aaron at
Mon Aug 30 16:43:49 UTC 2021

I've been following the thread.
If I'm dumb enough to back feed through the transformer into the downstream
side of the downed line, how is it going to be a problem if linemen are
grounding the phases on *both sides* of the work area.
That's what Ben seemed to be implying.


On Mon, Aug 30, 2021 at 9:09 AM Mel Beckman <mel at> wrote:

> Aaron,
> If you read back in this thread (using the NANOG mailing list archive),
> you’ll find this has been explained in great detail. In a nutshell, phase
> grounding won’t help if a generator is energized from the customer end, and
> this technique was discontinued in the 1970s due to the many deaths that
> resulted.
>  -mel
> On Aug 30, 2021, at 9:02 AM, Aaron C. de Bruyn via NANOG <nanog at>
> wrote:
> On Mon, Aug 30, 2021 at 7:35 AM Lady Benjamin Cannon of Glencoe, ASCE <
> lb at> wrote:
>> Yes, this is a real and dangerous problem.  Today.  Even with grounding
>> I’m afraid.  Source: I’ve been working in an engineering capacity for 27
>> years and I have the license you’d need to build a nuclear power plant.
> Would you care to educate me on this?
> If you ground the phases on both sides of the work-site, how are you going
> to end up being a better path to ground?
> -A
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the NANOG mailing list