Code Basics http://ecmweb.com/taxonomy/term/6615/more en NEC: Feeder Conductor Identification, Part 1 http://ecmweb.com/code-basics/nec-feeder-conductor-identification-part-1 <div class="node-body article-body">With the 2014 NEC, the rules for feeder identification [215.12] are greatly expanded. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/nec-feeder-conductor-identification-part-1" target="_blank">read more</a></p> http://ecmweb.com/code-basics/nec-feeder-conductor-identification-part-1#comments Code Basics mro-insider Silver Tue, 21 Jul 2015 15:50:00 +0000 125301 at http://ecmweb.com Motor Calculations — Part 1 http://ecmweb.com/code-basics/motor-calculations-part-1 <div class="node-body article-body">When motors start across the line, they typically draw five times the running current. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/motor-calculations-part-1" target="_blank">read more</a></p> http://ecmweb.com/code-basics/motor-calculations-part-1#comments Code Basics Motors Silver Fri, 19 Jun 2015 21:11:00 +0000 121961 at http://ecmweb.com Motor Calculations — Part 2 http://ecmweb.com/code-basics/motor-calculations-part-2 <div class="node-body article-body">Correctly sizing these different devices can be confusing. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/motor-calculations-part-2" target="_blank">read more</a></p> http://ecmweb.com/code-basics/motor-calculations-part-2#comments Code Basics Motors Silver Mon, 15 Jun 2015 21:11:00 +0000 125021 at http://ecmweb.com The Basics of Conductor Sizing — Part 2 http://ecmweb.com/code-basics/basics-conductor-sizing-part-2 <div class="node-body article-body">As we saw in Part 1, the correct sizing of conductors is more complicated than it appears. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/basics-conductor-sizing-part-2" target="_blank">read more</a></p> http://ecmweb.com/code-basics/basics-conductor-sizing-part-2#comments Code Basics Silver Mon, 18 May 2015 21:11:00 +0000 117531 at http://ecmweb.com The Basics of Conductor Sizing — Part 1 http://ecmweb.com/code-basics/basics-conductor-sizing-part-1 <div class="node-body article-body">Unfortunately, making the proper choices when sizing electrical conductors can get complicated. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/basics-conductor-sizing-part-1" target="_blank">read more</a></p> http://ecmweb.com/code-basics/basics-conductor-sizing-part-1#comments Code Basics Silver Mon, 20 Apr 2015 21:11:00 +0000 114381 at http://ecmweb.com Overcurrent Protective Device Sizing http://ecmweb.com/code-basics/overcurrent-protective-device-sizing <div class="node-body article-body">Undersize your overcurrent protective device (OCPD), and normal operations might become impossible. Oversize your OCPD, and the whole place might burn down.</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/overcurrent-protective-device-sizing" target="_blank">read more</a></p> http://ecmweb.com/code-basics/overcurrent-protective-device-sizing#comments Code Basics Silver Thu, 19 Mar 2015 22:35:00 +0000 111131 at http://ecmweb.com Box Sizing Tips http://ecmweb.com/code-basics/box-sizing-tips <div class="node-body article-body">So you go through all that work to correctly size your raceway, only to find out during the acceptance inspection that you have to replace some boxes and re-pull all of the conductors.</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/box-sizing-tips" target="_blank">read more</a></p> http://ecmweb.com/code-basics/box-sizing-tips#comments Code Basics Silver Mon, 16 Feb 2015 21:02:00 +0000 108511 at http://ecmweb.com Raceway Sizing: Getting it Just Right http://ecmweb.com/code-basics/raceway-sizing-getting-it-just-right <div class="node-body article-body">If raceway is too small, you can damage conductors while trying to pull them through. Even if they aren’t damaged during the pull, they may overheat inside an undersized raceway. For these reasons, the NEC has requirements for minimum raceway size. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/raceway-sizing-getting-it-just-right" target="_blank">read more</a></p> http://ecmweb.com/code-basics/raceway-sizing-getting-it-just-right#comments Code Basics Silver Thu, 22 Jan 2015 19:53:00 +0000 107121 at http://ecmweb.com Meeting Health Care Facility Electrical Requirements http://ecmweb.com/code-basics/meeting-health-care-facility-electrical-requirements <div class="node-body article-body">Health care facilities differ from other types of occupancies in many important ways. For this reason, they are classified as special occupancies. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/meeting-health-care-facility-electrical-requirements" target="_blank">read more</a></p> http://ecmweb.com/code-basics/meeting-health-care-facility-electrical-requirements#comments Code Basics Silver Thu, 18 Dec 2014 15:08:00 +0000 57961 at http://ecmweb.com Step-by-Step Guide to Transformer Installations http://ecmweb.com/code-basics/step-step-guide-transformer-installations <div class="node-body article-body">All you wanted to do was install a 30kVA, 120/208V transformer to supply receptacles in a new office structure on the production floor.</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/step-step-guide-transformer-installations" target="_blank">read more</a></p> http://ecmweb.com/code-basics/step-step-guide-transformer-installations#comments Code Basics Contractor Design NEC Silver Wed, 19 Nov 2014 00:53:00 +0000 56251 at http://ecmweb.com