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Discussion Threads

Create Date / Rating Title / Poster	Last Post	Comments	Views
04/25/2019 9:37 AM Is a VFD Good or Bad for Old 3 Phase Motors? by brandoncosta	Last post: 04/13/2022 11:30 AM by JRaef	20	498
02/21/2021 4:41 PM Charge and Discharge Timing by Anonymous Poster	Last post: 06/22/2021 12:46 PM by 67model	87	996
01/19/2021 4:10 AM An Important Message and a Favor, Please by philthespark	Last post: 01/23/2021 8:09 AM by philthespark	18	300
11/18/2020 2:14 AM Si Vacuum Transistor Application Chomping at the Bit by thewildotter	Last post: 11/29/2020 11:00 PM by dkwarner	19	235
07/22/2020 8:23 AM Finding Faulty DC Circuit by vijaymail_electrical	Last post: 08/20/2020 2:34 PM by HiTekRedNek	35	430
12/28/2016 2:17 AM Electric Garage-Door Motor Won't Run Under Load by Redman4556	Last post: 05/13/2020 8:28 PM by SolarEagle	67	1531
01/30/2020 1:37 AM Why Positive DC Grounding Over Floating? by kasrop	Last post: 02/03/2020 1:35 PM by Del the cat	8	236
01/27/2020 12:27 AM Cause of Solder Cracks? by sptilton	Last post: 01/30/2020 8:49 AM by HiTekRedNek	23	573
12/30/2019 8:31 AM Zenneck Surface Waves? Any Thoughts? by JE in Chicago	Last post: 12/31/2019 11:24 AM by jmnjrpa	10	166
02/06/2018 6:35 PM Three-Phase Thyristor Bridge Missing One Thyristor by Durguy	Last post: 12/12/2019 8:08 AM by Oomborrie	48	1284
09/08/2019 1:59 AM Vacuum and Dry Air Used for Removing Moisture Content in Transformer by Samuel Chelliah	Last post: 09/09/2019 7:59 AM by 67model	10	358
08/29/2019 12:55 AM Clean Way to Connect a 12 Wire Motor by deanpavil	Last post: 09/02/2019 4:26 AM by 67model	8	188
06/20/2019 10:56 AM Current Transformer Specifications by Anonymous Poster	Last post: 06/24/2019 6:15 AM by Stef	2	179
06/10/2019 1:10 PM Power Problem by WJMFIRE	Last post: 06/13/2019 3:28 PM by HiTekRedNek	24	433
05/17/2019 11:23 AM Capacitor Dividers by zodiac	Last post: 06/07/2019 7:55 AM by zodiac	33	311
05/10/2019 4:34 PM Running a Submersible Aquarium Pump by SYED MD. ANWAR UL ISLAM	Last post: 05/14/2019 7:15 AM by HiTekRedNek	17	263
05/05/2019 11:22 AM What is the Resistance of This Circuit, and How is it Calculated? by Anonymous Poster	Last post: 05/10/2019 2:14 PM by canadianslidewinder	34	498
02/21/2019 9:49 PM Solid State Relay Endurance by Paulusgnome	Last post: 03/03/2019 8:42 PM by ignator	26	439
09/17/2018 5:32 PM VFD Overload by eltech	Last post: 09/19/2018 1:38 PM by JRaef	14	354
08/29/2018 1:02 PM Troubleshooting NiCd Battery-packs by Dennis R. Levesque	Last post: 09/05/2018 2:23 PM by Dennis R. Levesque	11	601
09/02/2018 7:41 PM Drum Motor Problem by spades	Last post: 09/04/2018 7:03 PM by WAWAUS	16	604
08/01/2018 11:07 AM Ground Fault Indication on Un-grounded AC Systems by North of 60	Last post: 08/02/2018 1:02 AM by JRaef	5	227
03/27/2018 6:25 PM Weird Phenomenon With Old Stereo Receiver by Jack Puddin	Last post: 04/09/2018 5:05 AM by Randall	36	1008
03/05/2018 11:12 AM Standard Wiring for M8 and M12 Connectors? by scott165	Last post: 03/08/2018 3:24 PM by scott165	7	253
02/06/2018 1:05 PM Milling Machine Wiring Issues by JJSEEKER	Last post: 02/13/2018 12:22 PM by JRaef	43	531
01/31/2018 11:47 PM Contactor Humming as Soon as Voltage Increases by amar_verma008	Last post: 02/05/2018 11:12 PM by V.I.Abraham	17	393
01/24/2018 7:58 AM PLC Selection by ronanr	Last post: 01/31/2018 11:57 AM by daveoliver	11	395
01/26/2018 5:52 AM Electrical Lift For 20kg Load For 30m Height by vjpassion	Last post: 01/29/2018 1:02 PM by dkwarner	17	362
01/24/2018 10:42 PM Clockwise vs Antoclockwise in LV Network of Utility by Nassar	Last post: 01/26/2018 12:05 PM by rwilliams	11	377
12/07/2017 4:36 PM Three Phase Motor with Ten (10) Leads by RubenQ100	Last post: 01/16/2018 10:19 AM by hoo8975	19	521
11/14/2016 5:16 AM South Australia Power Blackout by IdeaSmith	Last post: 01/05/2018 3:40 PM by James Stewart	38	512
12/09/2017 3:28 PM Ammeter Not Reading Correctly by minggrabber	Last post: 12/17/2017 3:27 PM by dkwarner	71	1039
11/27/2017 1:19 PM Photovoltaics and Inverter by brian nuclear	Last post: 12/07/2017 12:30 PM by James Stewart	14	468
12/03/2017 11:50 PM Clarification Sought on Operating Sequence of a Circuit Breaker by Pradeep Gomasta	Last post: 12/06/2017 4:17 PM by James Stewart	11	376
11/26/2017 11:49 PM Fence Requirement For The Oil-Filled Power Transformers by ALNOUMAN	Last post: 12/01/2017 3:56 PM by Calnet42	13	744
10/09/2017 5:21 PM GFCI Ponderings by truthsmiles	Last post: 10/14/2017 9:34 AM by rwilliams	18	520
10/08/2017 4:57 AM Which Is Preferred? VFD or Capacitor Banks for PF Improvement? by Anonymous Poster	Last post: 10/11/2017 8:51 PM by gutmonarch	22	769
09/12/2017 6:03 PM STS Heat Trace Reactor by Durguy	Last post: 10/04/2017 5:27 PM by 67model	26	517
04/11/2017 11:03 AM Build a Cheap Quadcopter by trungsave96	Last post: 10/02/2017 9:06 AM by Gendes	60	566
09/26/2017 5:47 PM Danfoss VSD Not Tripping or Protecting The Motor by DannyD	Last post: 09/27/2017 3:10 PM by JRaef	3	336
06/13/2013 1:31 PM What Produces Second Harmonic Current? by axg002	Last post: 08/01/2017 5:14 AM by omprakashm	11	428
05/31/2017 5:13 AM Electrostatic Precipitator by nvrsrinivas	Last post: 07/19/2017 1:11 PM by rwilliams	12	406
07/08/2017 10:16 PM What is the Spring's Function in CT Measure? by tovanviet	Last post: 07/16/2017 7:43 PM by jack of all trades	17	434
06/27/2017 12:12 PM Six-coil, Three-phase Star Delta Starter by Vitoboy	Last post: 07/12/2017 4:33 PM by James Stewart	19	473
06/13/2017 3:13 PM Conduit / Conductor Calculator Tool - Review by k_engx	Last post: 06/14/2017 10:20 AM by k_engx	12	333
02/05/2017 9:29 AM Induction Motor Trips While Shifting Star to Delta Connection by sudarshan	Last post: 03/19/2017 10:28 PM by jmueller	12	2887
11/24/2009 12:03 AM How to Calculate Locked Rotor Current by benocrash	Last post: 12/19/2016 4:32 AM by PWSlack	15	18703
10/20/2016 5:48 AM Can Anyone Answer My Hypothetical Question About Filters? by zxcvb	Last post: 10/21/2016 10:20 PM by Sciesis2	9	629
08/18/2016 7:04 AM Powerflex 70 with Multiple Motors by eltech	Last post: 08/22/2016 5:47 PM by JRaef	12	404
07/07/2015 2:29 PM Medium Voltage Variable Speed Drive Harmonics by brich	Last post: 06/06/2016 10:32 PM by Anonymous Poster	48	988
05/26/2016 10:32 PM 33kV and 415V Cable Separation by anup2mohan	Last post: 05/31/2016 4:57 PM by RAMConsult	18	1434
01/06/2016 11:13 AM Clamp-On Meters by Codemaster	Last post: 04/06/2016 7:27 AM by Codemaster	19	527
11/14/2015 12:56 AM Power Factor of Variable Reactance Transformer by dkwarner	Last post: 03/25/2016 2:11 PM by Andy Germany	74	1064
12/15/2015 10:39 AM Best Holiday Light Displays by SavvyExacta	Last post: 12/17/2015 5:03 AM by PWSlack	21	585
02/16/2014 8:36 AM AVR for 100 KVA Alternator by sude	Last post: 12/16/2015 7:10 PM by cariel08	44	4493
11/26/2015 12:54 AM Effect of Hydrogen Sulfide on OH Bare Aerial Conductor (AL) by Ron Nombri	Last post: 12/12/2015 2:08 AM by dj95401	28	565
09/29/2015 4:26 PM Root Cause Analysis - Transformer by ronaldosalles	Last post: 10/06/2015 10:38 PM by Munster	41	918
01/05/2010 5:10 PM ONAN/ONAF/OFAF and short circuit currents by kellytshort	Last post: 09/09/2015 4:39 PM by benotype	13	2803
07/03/2015 7:22 AM Useful Online Calculator Website by calctown	Last post: 07/06/2015 7:48 AM by Randall	10	671
04/25/2015 1:21 AM Calculation on a 3 Phases Unbalanced Delta by JumpZero	Last post: 04/30/2015 12:22 AM by 7anoter4	28	776
11/17/2010 1:25 AM Why to use class PS CT's for Differential Protection? by roshanjawale	Last post: 04/23/2015 12:04 AM by ykuakhi	11	7020
11/21/2006 3:17 AM Electric Motor Rotation by lshurtle	Last post: 04/22/2015 7:19 PM by mikcomserv	23	2488
05/19/2014 5:50 AM A Liquid 'Homopolar Motor' by europium mkII	Last post: 03/14/2015 2:44 PM by Ziggy	15	336
03/23/2009 2:52 AM Nikola Tesla and the Whitefire Experiments by bcmarshall	Last post: 10/28/2014 9:26 PM by bcmarshall	34	769
10/09/2007 9:04 PM Temperature Control and Induction Cooking by aXiom K	Last post: 08/14/2014 9:49 AM by Andy Germany	73	498
12/14/2013 12:19 PM Household Voltage Drop by Graebeard	Last post: 12/19/2013 5:23 PM by Anonymous Poster	64	972
11/08/2013 9:34 AM ABB ACS550-U1 by RichWargo	Last post: 11/14/2013 12:58 AM by JRaef	46	555
10/07/2013 4:51 AM Solar Panel Wired Directly to Battery Bank by kebang	Last post: 11/09/2013 3:50 AM by gasolina	42	718
03/07/2009 11:40 AM plug setting multiplier by subhasis	Last post: 09/18/2013 4:00 AM by Aghvel Niazi	8	1312
08/27/2013 9:21 AM Harmonic Filter - Cost, Size? by Lars	Last post: 08/29/2013 9:26 AM by marcot	13	302
07/24/2013 12:32 AM Autorecloser Instantaneous Based on Line Splice Rating / Conductor Damage Curve? by kenth619	Last post: 07/24/2013 6:35 PM by RAMConsult	4	200
07/04/2013 12:53 PM 1D10t Protection Relay by Anonymous Poster	Last post: 07/08/2013 11:37 PM by Anonymous Poster	15	287
06/24/2013 6:10 PM Generator Issue Continued... by Robotech	Last post: 06/27/2013 2:34 AM by Mntho24	27	598
01/21/2013 6:05 PM Earthed and Unearthed Cable by wareagle	Last post: 01/29/2013 9:56 AM by 7anoter4	5	236
01/10/2013 3:23 AM Acid Water Filling by Anonymous Poster	Last post: 01/19/2013 4:21 AM by Anonymous Poster	11	146
01/08/2013 6:40 AM Cable Fault by polerz	Last post: 01/10/2013 11:07 AM by The.Tinkerer	18	418
08/14/2012 12:36 PM Faraday Cage: To Ground or Not to Ground by Anonymous Poster	Last post: 08/15/2012 4:49 PM by europium	14	794
06/20/2012 6:13 PM Little Lights Flicker by electric	Last post: 07/08/2012 5:18 PM by electric	51	973
04/10/2012 12:48 PM Wisdom Through Troubleshooting Circuits by NotUrOrdinaryJoe	Last post: 04/16/2012 9:16 AM by NotUrOrdinaryJoe	5	281
03/12/2012 1:54 AM 3842 SMPSU Odd Jobs by Refugee	Last post: 03/25/2012 9:35 AM by Refugee	8	266
03/08/2012 2:24 PM Water Tanks at a 1904 Transformer Station by Bjmorin	Last post: 03/09/2012 2:11 PM by KJK/USA	14	337
07/14/2008 8:53 PM Transformer Oil Leaks by TomHaRa	Last post: 01/08/2012 10:17 AM by JimH	14	327
12/01/2011 8:47 PM Effectively Grounded? by wareagle	Last post: 12/06/2011 6:56 AM by SITMWY2	18	466
01/24/2011 12:15 PM Unexpected 7.5kVa Line Load by Alaskan Dad	Last post: 10/31/2011 4:55 PM by AK Dad	17	470
09/18/2011 11:57 AM Commercial Load Calculations by wareagle	Last post: 09/18/2011 1:26 PM by Tornado	5	318
06/29/2011 7:39 AM Energy Consumption of Typical Family in the World by bravo88	Last post: 07/07/2011 11:25 PM by gsuhas	18	269
06/20/2011 4:35 PM Bob Pease and Jim Williams have Died by redfred	Last post: 06/22/2011 10:55 AM by tdesmit	11	372
05/27/2011 4:08 AM Visit to the Doctors ! ! ! ! by TonyS	Last post: 05/28/2011 12:00 PM by Andy Germany	6	561
04/19/2011 5:32 AM Circuit Board Solder Reflow by Joe Sparky	Last post: 04/20/2011 3:47 PM by jack of all trades	18	405
03/23/2011 5:59 PM LM317 Cap On ADJ Pin by Lo_Volt	Last post: 03/27/2011 11:14 AM by Dave Simpson	20	689
10/29/2010 8:18 PM Check This Web Site by wareagle	Last post: 03/09/2011 3:26 PM by TonyS	7	201
02/21/2011 11:29 AM Power Distribution Board by islam_nemr	Last post: 02/23/2011 5:39 AM by 67model	10	164
01/26/2010 6:06 PM Mu-Metal Faraday Cage? by grav01	Last post: 01/21/2011 1:36 AM by Anonymous Poster	45	1572
01/18/2011 11:58 AM Child Safety by TonyS	Last post: 01/19/2011 6:35 AM by Randall	5	321
10/24/2006 6:02 AM How to Calculate Capacitor Discharge Resistor Values? by habib haider	Last post: 01/08/2011 6:44 AM by Anonymous Poster	18	5780
12/30/2010 10:44 PM UL Class CC Fuse by kvsridhar	Last post: 01/05/2011 12:48 AM by kvsridhar	32	567
12/11/2010 9:25 AM Burnt 34.5 KV Cables by mi7f	Last post: 12/15/2010 9:04 AM by 67model	16	343
09/25/2009 8:03 AM Locked Rotor Current vs. Starting Current by Raif-Samir	Last post: 12/07/2010 1:45 AM by Anonymous Poster	6	8638
11/04/2010 7:15 PM Using 60Hz Transformer on 50Hz Supply by jinxnao	Last post: 11/09/2010 6:18 PM by jinxnao	5	2533
11/02/2010 12:37 AM 24 VDC PWM Causes Objectionable Motor Noises in Housing by Laughing Jaguar	Last post: 11/04/2010 9:21 AM by Laughing Jaguar	13	274

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