General Electrical Talk Discussion http://ecmweb.com/taxonomy/term/19691/more en Determining the number of fiitings http://ecmweb.com/forums/general/general-electrical-talk-discussion/determining-number-fiitings <div class="node-body forum-body"><p>How to determine the number of fittings like couplings, locknuts and bushings, connectors, elbow, etc?</p> <p><span>For example, a 145 ft length of EMT pipe needs how many couplings and connectors? Is there a specific formula to get the number of fittings?</span></p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/determining-number-fiitings#comments General Electrical Talk Discussion Wed, 05 Aug 2015 02:03:07 +0000 125911 at http://ecmweb.com LED Driver Lead Wires Limiting Voltage Drop http://ecmweb.com/forums/general/general-electrical-talk-discussion/led-driver-lead-wires-limiting-voltage-drop <div class="node-body forum-body"><p>My question is this:</p> <p>An LED driver has #12 lead wires, but calls for running #8 because of the distance.&nbsp;Is this pointless because of the lower&nbsp;size wire at the source?</p> <p>Thanks in advance for your comments.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/led-driver-lead-wires-limiting-voltage-drop#comments General Electrical Talk Discussion Fri, 17 Jul 2015 17:01:43 +0000 125171 at http://ecmweb.com Hi Friends http://ecmweb.com/forums/general/general-electrical-talk-discussion/hi-friends <div class="node-body forum-body"><p>&nbsp;I&nbsp;am new here. I hope we will discuss a&nbsp;lot of valuable information. Glad to meet you all.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/hi-friends#comments General Electrical Talk Discussion Tue, 23 Jun 2015 05:58:42 +0000 122341 at http://ecmweb.com Method to Protect the Coil End of Power Cable http://ecmweb.com/forums/general/general-electrical-talk-discussion/method-protect-coil-end-power-cable <div class="node-body forum-body"><p>We are going to install a power cable during this July shutdown. One end of this cable will be terminated on load side of fusible disconnect switch (800A), the other end will be terminated on a MCC set. However, the MCC won&#39;t be ready in July. Thus, this end of cable should be securely and safely&nbsp;protected. Got any tips on how to do so?</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/method-protect-coil-end-power-cable" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/method-protect-coil-end-power-cable#comments General Electrical Talk Discussion Fri, 12 Jun 2015 12:41:37 +0000 120671 at http://ecmweb.com Housekeeping of Electrical Cabinets http://ecmweb.com/forums/general/general-electrical-talk-discussion/housekeeping-electrical-cabinets <div class="node-body forum-body"><p>My plant manger said he doesn&#39;t want me to blow out my electrical cabinets with a vacuum cleaner, but I have have always done this and have been doing it for 8 years. I work in a brick plant, my cabinets down in one department get really bad and vacuuming them&nbsp;just doesn&#39;t do the trick.</p> <p>What I was was wondering is has anybody had any trouble doing this and what suggestions do you have to keep them clean. My plant manger said that he had a problem one time at another plant when&nbsp;someone was blowing out cabinets and it shut him down for&nbsp;4 hours.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/housekeeping-electrical-cabinets" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/housekeeping-electrical-cabinets#comments General Electrical Talk Discussion Thu, 11 Jun 2015 13:21:30 +0000 120591 at http://ecmweb.com Veterinary Hospital http://ecmweb.com/forums/general/general-electrical-talk-discussion/veterinary-hospital <div class="node-body forum-body"><p>Does a Veterinary Hospital fall under the same requirements as&nbsp;a regular hospital?</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/veterinary-hospital#comments General Electrical Talk Discussion Mon, 08 Jun 2015 20:39:37 +0000 120371 at http://ecmweb.com VFD Run Problem http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-run-problem <div class="node-body forum-body"><p>Dear All,</p> <p>We have Allen Bradley VFD CAT1336F-B050-AN-EN. We are facing problem that when we give RUN command from HMI, then drive card 1336F-MCB-SP1K shows that drive is running by turning&nbsp;ON RUN (GREEN) LED, but on HMI drive remains on stopped condition and not goes on &ldquo;at speed&rdquo; position and also drive not run physically.&nbsp;We have this same issue on other Allen Bradley Drives: 1336F-BP400-AN-EN-NCM &amp; 1336F-B200-AN-EN.</p> <p>Please give valuable suggestions to solve the problem.</p> <p>With best regards,</p> <p><strong>Mumtaz Ahmed</strong></p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-run-problem" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-run-problem#comments General Electrical Talk Discussion Sun, 07 Jun 2015 16:02:54 +0000 120191 at http://ecmweb.com Parallel Connection of Cranes http://ecmweb.com/forums/general/general-electrical-talk-discussion/parallel-connection-cranes <div class="node-body forum-body"><p>I have faced a peculiar situation today.</p> <p>I have fed a bus bar consisting of two crane from two different MCCBs in order to prevent downtime when fault occurs.</p> <p>I&#39;ve taken the same source and fed the bus bar from two different MCCBs of rating 250A and 160A each. The cable connected to bus bar is 3 core&nbsp; 50 sq mm cable which is fed at the center of bus bar. The auxilliary supply is given via a 3 core 35 sq&nbsp;mm cable but is fed at the end of bus bar.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/parallel-connection-cranes" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/parallel-connection-cranes#comments General Electrical Talk Discussion Sun, 24 May 2015 18:46:09 +0000 118781 at http://ecmweb.com Approved Method of Wiring http://ecmweb.com/forums/general/general-electrical-talk-discussion/approved-method-wiring <div class="node-body forum-body"><p>Greetings,</p> <p>We are looking at wiring a gazebo and&nbsp;in order to hide the wire the contractor wants us to run the wire on the roof under a Spanish tile, which has an air gap. Thought it might be possible with UF&nbsp;inside a piece of car flex for protection. Concerns would be the heat and&nbsp;Code violations. Any comments would be appreciated.</p> <p>Thank you very much.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/approved-method-wiring#comments General Electrical Talk Discussion Thu, 07 May 2015 18:47:31 +0000 116621 at http://ecmweb.com Strange socket problem: bulbs burn-out, and socket is on even though light switch is off. http://ecmweb.com/forums/general/general-electrical-talk-discussion/strange-socket-problem-bulbs-burn-out-and-socket-e <div class="node-body forum-body"><p>I have a strange problem at my home office.</p> <p>I&#39;d screw a new bulb into the ceiling socket, and turn on the light. All would be fine for about an hour, and then the bulb would start to blink,and after several seconds, would burn out.</p> <p>Now comes the strange part: I used a tester-screwdriver, and both socket terminals show as live, even though I&#39;d turn the switch onn and off.</p> <p>Can you suggest what is causing this strange phenomena, and what should I fix so that bulbs will stop burning once in the socket?</p> <p>&nbsp;</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/strange-socket-problem-bulbs-burn-out-and-socket-e#comments General Electrical Talk Discussion Sun, 03 May 2015 20:35:39 +0000 116021 at http://ecmweb.com