General Electrical Talk Discussion http://ecmweb.com/taxonomy/term/19691/more en 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 Mixed wire guages in house wiring http://ecmweb.com/forums/general/general-electrical-talk-discussion/mixed-wire-guages-house-wiring <div class="node-body forum-body"><p>We&#39;re doing a major re-work of an electrical system in a house of about 40 years of age and we uncovered a&nbsp;mix of&nbsp;12 and 14 guage&nbsp;wiring, usually on switch leads. All home runs and OCPDs are 20 amp respectively. &nbsp;Has it ever been Code to wire this way?</p> <p>Thanks in advance for your replies.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/mixed-wire-guages-house-wiring#comments General Electrical Talk Discussion Sun, 19 Apr 2015 22:44:31 +0000 114541 at http://ecmweb.com 200 Amp Panel with 150 Amp Main Breaker? http://ecmweb.com/forums/general/general-electrical-talk-discussion/200-amp-panel-150-amp-main-breaker <div class="node-body forum-body"><p>There&#39;s an installation where the feed is only suitable for a 150 amp panel to replace a Zinsco 100 amp panel, but the only panel that will fit is a 200 amp combination load center.</p> <p>The neighboring property used a 200 amp panel but used a 150 amp main breaker instead of the 200 amp breaker. They used a Square D&nbsp;SC816D200C. It passed inspection.</p> <p>Is it acceptable to downsize the main breaker like that? The buss is still 200 amps and someone could, in the future, put in a 200 amp main breaker thinking that it was okay because it&#39;s a 200 amp panel.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/200-amp-panel-150-amp-main-breaker#comments General Electrical Talk Discussion Fri, 10 Apr 2015 18:55:25 +0000 113691 at http://ecmweb.com Large Size Inverter Gen-sets: Why Aren't They Common? http://ecmweb.com/forums/general/general-electrical-talk-discussion/large-size-inverter-gen-sets-why-arent-they-common <div class="node-body forum-body"><p>Hello everyone... First post here for me... I am not actually an electrical professional, but lately I have been looking a little bit into gen-set technology, and I have got some questions. Please, correct me if I say something wrong and excuse me if I say something terribly stupid.<br /> By &quot;inverter gen-set&quot; I mean a variable speed motor running a generator that produces AC at whatever frequency, then gets rectified and retransformed to 50/60 Hz AC by some sort of electronics.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/large-size-inverter-gen-sets-why-arent-they-common" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/large-size-inverter-gen-sets-why-arent-they-common#comments General Electrical Talk Discussion Thu, 12 Mar 2015 15:41:38 +0000 110621 at http://ecmweb.com Amperage on a motor http://ecmweb.com/forums/general/general-electrical-talk-discussion/amperage-motor <div class="node-body forum-body"><p>I have a centrifugal pump driven by a 30 hp motor. The pump is running with both the inlet and discharge valves open. What happens to the amps on the motor when discharge is slowly closed to completly shut off? The bypass is also shut. I know you are not to do this due to burning up the pump and seals.</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/amperage-motor#comments General Electrical Talk Discussion Thu, 12 Mar 2015 11:18:00 +0000 110561 at http://ecmweb.com Power Monitoring http://ecmweb.com/forums/general/general-electrical-talk-discussion/power-monitoring <div class="node-body forum-body"><p>Hello all, first post here.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/power-monitoring" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/power-monitoring#comments General Electrical Talk Discussion Sun, 08 Mar 2015 21:53:13 +0000 110161 at http://ecmweb.com Wire ways in Wood counters http://ecmweb.com/forums/general/general-electrical-talk-discussion/wire-ways-wood-counters <div class="node-body forum-body"><p>We are a wood cabinet manufacturer and have to run lights from an overstructure into our base areas. We have wooden support posts, can we run wires thru a chase routered into our wood or do we have to run some type of metal flex or conduit thru this wood chase?</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/wire-ways-wood-counters#comments General Electrical Talk Discussion Tue, 10 Feb 2015 15:09:09 +0000 108071 at http://ecmweb.com synchronize parallel generator http://ecmweb.com/forums/general/general-electrical-talk-discussion/synchronize-parallel-generator <div class="node-body forum-body"><p>Dear experts</p> <p> I want to configure new alternative power for electrical power system. You can look the system in image attachment.<br /> this picture:</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/synchronize-parallel-generator" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/synchronize-parallel-generator#comments General Electrical Talk Discussion Wed, 04 Feb 2015 09:54:58 +0000 107781 at http://ecmweb.com GFCI breakers and nuisance tripping http://ecmweb.com/forums/general/general-electrical-talk-discussion/gfci-breakers-and-nuisance-tripping <div class="node-body forum-body"><p>Has anyone experienced nuisance tripping with GFCI breakers because of conductor length?</p> </div><div class="og_rss_groups"></div> http://ecmweb.com/forums/general/general-electrical-talk-discussion/gfci-breakers-and-nuisance-tripping#comments General Electrical Talk Discussion Tue, 13 Jan 2015 23:13:45 +0000 106451 at http://ecmweb.com Electric in-floor heating cable problem http://ecmweb.com/forums/general/general-electrical-talk-discussion/electric-floor-heating-cable-problem <div class="node-body forum-body"><p>Lets say a 360W heating cable was carefully installed in the leveling grout of a 5&#39; x 10&#39; bathroom floor, covered by 16&quot; ceramic tiles. On slab, no staples, correct spacing, no crossovers. Control was a FST-1 with temp sensor, GFI and built in rest periods for the cable. Worked perfectly for 4 years (winters only), then suddenly started tripping the controller GFI. No covers, no damage or cracks in the floor.</p> </div><div class="og_rss_groups"></div><p><a href="http://ecmweb.com/forums/general/general-electrical-talk-discussion/electric-floor-heating-cable-problem" target="_blank">read more</a></p> http://ecmweb.com/forums/general/general-electrical-talk-discussion/electric-floor-heating-cable-problem#comments General Electrical Talk Discussion Wed, 31 Dec 2014 00:10:38 +0000 105551 at http://ecmweb.com