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

Jay Hennigan jay at
Wed Aug 25 19:22:35 UTC 2021

On 8/25/21 12:03, Jay Nugent wrote:
> Greetings,
>      And in that moment before the circuit breaker on your generator 
> trips, your 120/240 volts has been stepped up to 7200 through the "pole 
> pig" transformer in your neighborhood, and has KILLED the lineman 
> working to fix that 7200 feeder circuit.
>     It only takes a MOMENT to stop someone's heart through electocution. 
> It takes several milliseconds to pop a breaker.

And it would have only taken that lineman a few seconds to attach a 
grounding bond to the supposedly dead feeder and transformer before 
grabbing it bare-handed while speculating as to why it sounds like 
there's an engine running at constant RPM coming from the house 
connected to the service drop.

Serious accidents are often caused not by a single failure but several.

Jay Hennigan - jay at
Network Engineering - CCIE #7880
503 897-8550 - WB6RDV

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