General Electrical Talk Discussion http://ecmweb.com/taxonomy/term/19691/more en 2015 NFPA 70E http://ecmweb.com/forums/general/general-electrical-talk-discussion/2015-nfpa-70e <div class="node-body forum-body"><p>The new 70E is out. HRC has been changed to PPE Categories, HRC 0 went away, labels have changed, tables have been simplified and, so on. Is anyone making any changes, yet? You certainly aren&#39;t going to run out and put on all new labels. But, if you&#39;re just starting an analysis are you planning on meeting the 2015 requirements? Curious to hear how facilities are planning to implement this.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/2015-nfpa-70e#comments General Electrical Talk Discussion Thu, 18 Dec 2014 06:27:11 +0000 58121 at http://ecmweb.com What are some advantages of being an electrician? http://ecmweb.com/forums/general/general-electrical-talk-discussion/what-are-some-advantages-being-electrician <div class="node-body forum-body"><p><span>Working as an electrician is a career that many people consider after graduating from high school. With this type of job, you benefit from several advantages that you cannot get from other jobs. You get to work with your hands, make a decent wage and get started quicker than with other careers.</span><br /> <strong>No College Required</strong></p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/what-are-some-advantages-being-electrician" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/what-are-some-advantages-being-electrician#comments General Electrical Talk Discussion Fri, 14 Nov 2014 08:34:48 +0000 55941 at http://ecmweb.com Does the worker have to be a qualified electrician? http://ecmweb.com/forums/general/general-electrical-talk-discussion/does-worker-have-be-qualified-electrician <div class="node-body forum-body"><p><span>State and federal regulations regarding workplace safety can often be confusing or ambiguous.</span></p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/does-worker-have-be-qualified-electrician" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/does-worker-have-be-qualified-electrician#comments General Electrical Talk Discussion Tue, 04 Nov 2014 07:46:31 +0000 55301 at http://ecmweb.com Difference between service and disconnecting means and multiple locations for services entrance on one building http://ecmweb.com/forums/general/general-electrical-talk-discussion/difference-between-service-and-disconnecting-means <div class="node-body forum-body"><p>When large apartment buildings have multiple service locations on one building, what are the requirements per the NEC? Can one building have multiple service locations with just a plaque being installed at each service? When do fire walls come into play as to locations of services?</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/difference-between-service-and-disconnecting-means#comments General Electrical Talk Discussion Thu, 11 Sep 2014 13:21:43 +0000 52401 at http://ecmweb.com VFD Transformer sizing http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-transformer-sizing <div class="node-body forum-body"><p>&nbsp;</p> <p> <span>We propose to install two 12-pulse, AC VFD drives for two 690V, 3Ph AC motors of rating 500KW each. (Total load = 1,000KW). Both the VFDs are fed by a common 3 winding phase shifting transformer. The harmonics generation may be less because of 12 pulse configuration.</span></p> <p> &nbsp;</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-transformer-sizing" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/vfd-transformer-sizing#comments General Electrical Talk Discussion Mon, 18 Aug 2014 00:53:26 +0000 51341 at http://ecmweb.com tap conductor sizing and fusing http://ecmweb.com/forums/general/general-electrical-talk-discussion/tap-conductor-sizing-and-fusing <div class="node-body forum-body"><p>I have a question in regards to tap conductors and protection. I understand the tap conductors as per the NEC, however, I&#39;m having trouble with understanding the sizing allowed. I have a 400A distibution panel with no more fuse or breaker space available. I would like to tap its bus to feed another panel. What I need to know is what the maximum amperage is that I can tap to? For example, can I tap the bus bar and feed a 125A disconnect?<br /> Any help understanding this section of the Code would be greatly appreciated.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/tap-conductor-sizing-and-fusing#comments General Electrical Talk Discussion Sun, 22 Jun 2014 17:37:34 +0000 48081 at http://ecmweb.com Single Phase to three phase power conversion http://ecmweb.com/forums/general/general-electrical-talk-discussion/single-phase-three-phase-power-conversion <div class="node-body forum-body"><p>Please, can anyone clarify how to arrive at the total power consumption from the below details?<br /> <span>400V, 3ph+N, total load is 17.92kW</span><br /> 230V, 1ph+N, total load is 16.06kW</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/single-phase-three-phase-power-conversion#comments General Electrical Talk Discussion Fri, 13 Jun 2014 10:51:30 +0000 47711 at http://ecmweb.com Multi-conductor THHN one reel http://ecmweb.com/forums/general/general-electrical-talk-discussion/multi-conductor-thhn-one-reel <div class="node-body forum-body"><p>I am looking for input on using the simpull system (or equivalent). I am bidding a project to R/R a set of 480V feeders in excess of 1,000 ft and would like to know the pros and cons from fellow tradesmen.<br /> Cost v. single conductors installation?<br /> Maintenance: good/bad?<br /> Ever delt with a single failed feeder with this system?<br /> Anything else you can think of?<br /> <span>A second set of eyes on this would help greatly. Thanks in advance for the input.</span></p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/multi-conductor-thhn-one-reel#comments General Electrical Talk Discussion Sat, 07 Jun 2014 17:03:09 +0000 47381 at http://ecmweb.com cable labels at terminations and junction boxes http://ecmweb.com/forums/general/general-electrical-talk-discussion/cable-labels-terminations-and-junction-boxes <div class="node-body forum-body"><p>I&#39;m reposting this in an effort to get some feedback on whether identification labels are required at the termination points and at junction boxes where fire alarm cable is being installed.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/cable-labels-terminations-and-junction-boxes" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/cable-labels-terminations-and-junction-boxes#comments General Electrical Talk Discussion Fri, 06 Jun 2014 21:09:05 +0000 47371 at http://ecmweb.com plfa cable label requirements http://ecmweb.com/forums/general/general-electrical-talk-discussion/plfa-cable-label-requirements <div class="node-body forum-body"><p>The requirement of 760.10 seems pretty straight forward: label all PLFA circuits where they terminate or are installed in junction boxes. But one fire alarm contractor is telling me that its only required where it might cause confusion for other trades such as at a duct detector on a large air handler. Using the line from the NEC, &quot;in a manner that will prevent unintentional interference with the fire alarm circuits during testing and servicing,&quot; I agree it needs to be done in a manner that prevents unnecessary interference.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/plfa-cable-label-requirements" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/plfa-cable-label-requirements#comments General Electrical Talk Discussion Thu, 22 May 2014 20:34:47 +0000 46811 at http://ecmweb.com