<html><body><div style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div>Back at college, the prof told a story from his college days, about some gorilla pulling a heavy feeder cable across the floor on some temp installation. Coming across some obstruction that snagged the cable, he just pulled harder, hard enough to separate the cable from the snagged connector. The 240v bare wires weren't touching each other, but as they travelled across the floor, they were arcing and sparking as they shorted across the concrete, which politely disintegrated, breaking the circuit before the breaker tripped. He said there was about 4 feet of permanent scarred pitted concrete arc trail, and one hell of a smell, when the breaker finally went. The gorilla never even noticed, until he reeled in the cable at its destination. </div><div><br></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Richard Niederberg via Stagecraft" <stagecraft@theatrical.net><br><b>To: </b>"Stagecraft Mailing List" <stagecraft@theatrical.net><br><b>Cc: </b>"Richard Niederberg" <ladesigners@gmail.com><br><b>Sent: </b>Saturday, January 18, 2020 11:01:07 AM<br><b>Subject: </b>Re: [SML] Wire junction<br></div><div><br></div><div data-marker="__QUOTED_TEXT__"><div dir="ltr"><div>WOW! I can hardly wait for the spectacular arcing that would put Magnesium-based pyrotechnics to shame.</div><div>/s/ Richard</div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Sat, Jan 18, 2020 at 10:52 AM Jerry Durand via Stagecraft <<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;">This is a free range thermo-dynamic junction. The junction quality will<br>
vary inversely with with the need, the more you draw the looser the ties<br>
get so the less it gives you. Being free range the junction can release<br>
offensive odors away from neighbors while being free to join up with any<br>
neighbors of the appropriate polarity that are willing to enter into a<br>
union.<br>
<br>
Warning, wire unions are often pretty wild. When the sparks start<br>
flying, nearby conductors should be insulated from the fallout.<br>
<br>
On 1/18/20 10:43 AM, Richard Niederberg via Stagecraft wrote:<br>
> Shouldn't you put a shrink tubing sleeve over the whole joint? <g> By<br>
> what factor, if any, has the current carrying capacity been<br>
> diminished? What should we de-rate the joint to? Will the heat rise,<br>
> if any, be higher than the insulation is rated for?<br>
> /s/ Richard<br>
><br>
<br>
-- <br>
Jerry Durand, Durand Interstellar, Inc. +1 408-356-3886<br>
<a href="http://www.DurandInterstellar.com" target="_blank" rel="noreferrer">www.DurandInterstellar.com</a> & <a href="http://www.Durandinterstellar.ru" target="_blank" rel="noreferrer">www.Durandinterstellar.ru</a><br>
<br>
<br>
____________________________________________________________<br>
For list information see <<a href="http://stagecraft.theprices.net/" target="_blank" rel="noreferrer">http://stagecraft.theprices.net/</a>><br>
Stagecraft mailing list<br>
<a href="mailto:Stagecraft@theatrical.net" target="_blank">Stagecraft@theatrical.net</a><br>
<a href="http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net" target="_blank" rel="noreferrer">http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net</a><br>
</blockquote></div><br clear="all"><br>-- <br><div class="gmail_signature" dir="ltr">/s/ Richard<br>_________</div>
<br>____________________________________________________________<br>For list information see <http://stagecraft.theprices.net/><br>Stagecraft mailing list<br>Stagecraft@theatrical.net<br>http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net<br></div></div></body></html>