<br>OK this reminds me of another war story from my lifes experiential outcomes and the wired grid.<div><br></div><div>I was sitting in a friends apartment one dark and stormy night when I noticed severe sparking from the overhead power lines. Now I'm not an alarmist and after several decades working in sustainable development I have developed certain commnication skills and I convinced dispatch that this was excessive sparking so they sent out TFD. </div><div><br></div><div>Now what <span style="font-size:15px">I hadn't told dispatch was that my concern was based on the knowledge that this particular building had two loads coming into it, one for one municipal address and one for the one we were in. The caveat: the developer had severed the power to the other address. So what is the issue you say. All the copper grounding throughout the building. You recall a previous comment on ground and optimisim I made. Also this was around the time all the downtown electrical leaks were happening.</span><div><br></div><div>So TFD showed up, I related my concerns and was received with skeptisim and disbelief by the crew. That is until they got a call to a house a block away about the power being out. So I went over with them to see the cause of the outage.</div><div><br></div><div>It's one thing for the connections to sever at the tap and fall to the ground than it is the other way round. Obviously one feeds the wet ground with current, the other doesn't. Ask any worm picker why they plug a 12v car battery into the ground after a rainstorm and they'll tell you they tickle the worms to the surface.</div><div><br></div><div>So at this point in the tale you are left with the same questions the fire department had, what did one event have to do with the other. </div><div><br></div><div>Well we reverse engineered the time of my call and the time of the other call to figure the arcing from the service wires to the trees in front of my friends apt happened at approximately the same time.</div><div><br></div><div>How does copper ground wires throughout a two story house factor in. Well think of delta confiuration on a balanced polyphased distribution grid. All those above ground copper tendrils acted as a homing beacon for the wave which was trying to find it's way home via a center tap. It wasn't traveling from the service to the trees, it was traveling from the ground to the center tap via the trees.</div><div><br><div>The fire department guys couldn't figure out how Ontario Hydro got to the second call before they did. The first response crew got their yuks at the expense of the second crew, snowing them about who I was and what I was doing there. I kept my mouth shut, either you have enough grounded knowledge to know what is possible or you don't. For myself, I'm always exploring what I don't know and this is what makes hacking fun for me.</div><div><br></div><div>FTW means fix the world, not fuck the world. So I fix what I can and ask for help with the rest.</div><div><br></div><div>Close to twenty years on this list and I've learned a lot and helped a little, at least that's what I hope for, but it is what it is as they say.</div><div><br></div><div>For those who don't send my posts to /dev/null I'll have an update on MP bios follies and the fate of the Toshiba satellite Peter gave me. The issue is whether to use an inductive or a deductive solution after trashing the HD by using it as a case thermometer.</div><div><br></div><div>Peace out.</div><div>Russell<br><div>On Saturday, March 14, 2015, Stewart C. Russell <<a href="mailto:scruss@gmail.com">scruss@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 2015-03-14 07:32 PM, Lennart Sorensen wrote:<br>
> I have no idea if this really results in a big load imballance problem<br>
> in general, or not.<br>
<br>
It does require a little bit of care in planning to make sure the loads<br>
on all of the phases are reasonably well balanced, but isn't a huge<br>
problem. You might want to avoid large inductive loads on one branch,<br>
though.<br>
<br>
The Strachan switchyard near where the OP lives is under huge load with<br>
all the new condos nearby. I wouldn't be at all surprised if its power<br>
quality wasn't quite to standard.<br>
<br>
cheers,<br>
Stewart<br>
<br>
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