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The most recent discussions

Who can tell me how much about one set 3T induction furnace?


May 8, 2017, 8:11 am

Hello,sir or madam, Do anybody know 3 ton capacity 6 rectifier 12 pulse;steel shell;cast iron melting furnace ballpark estimate? Plan to machine tool manufacturing. Thanks. Read more »

Question about Door Bell Wiring


May 8, 2017, 3:20 am

I need a second doorbell in the garage shop. There is only one button (at the front door). The transformer is in the garage where I need the second bell and only has 2 wires connected to it. I wo... Read more »

Help with wiring zwave switch for water heater (240V)


May 1, 2017, 4:30 pm

Moin, I hope this is a suitable group for this kind of question. If no, suggestions are welcome. I'd like to automate our storage/tank water heater using some home automation system using zWave. ... Read more »

What is going on here (electrically)?


April 24, 2017, 5:22 am

In Philadelphia, the electrical distribution system has many configurations similar to these: https://goo.gl/maps/CFTdNYGoY9F2 https://goo.gl/maps/v9BmSQwtUWF2 Two transformer cans on a pole. No... Read more »

Electrical Safety Month


April 21, 2017, 2:31 am

Got the heads up from this groups website on social media. https://www.thunderclap.it/projects/56011-support-electrical-safety?locale=en * Stay Safe * R.Q.T. Read more »

Microwave oven woes...


April 7, 2017, 2:53 pm

A client left a faulty microwave oven at my friend's shop, I opened it up and first thing I checked was, of course the HV fuse. It was open so a new one. Nothing. Checked with my HV probe, at the... Read more »

DC Motor


March 31, 2017, 7:11 pm

On older[30 to 50 years] field wound DC motors the field voltage was 90 volts. Why 90 volts and how was it derived? Thamks, CP Read more »

MV Power Factor Meters/Measurement


March 31, 2017, 3:42 pm

Hello, all, especially power engineers that plan MV distribution runs for electric utilities. Say a 12470/7200 volt medium-voltage distrubution system will most likely need power factor correctio... Read more »

Special function in power plants


February 7, 2017, 3:17 pm

DO power plants have a MILITARY function that short-circuit ALL citizens' AC socket? :) -- @~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!! / v Simplicity is Beauty! ... Read more »

To those who think solar panels match demand against load


January 24, 2017, 3:18 am

It's 35 Celsius (95 Farenheit) here, and overcast all day. My air conditioner is definitely not running on solar power. Sylvia. Read more »

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The best rated discussions

DTV Pal running slow rating: 5

My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled inactivity standby (which turns it off after certain time without detec... Read more »

South Korea 380V Power line colour code rating: 5

Appreciate if anyone can help me. I am looking for information on colour code used in south Korea 380V 3 phase power line. I am used to the BS standard that is red, yellow and blue phase with neutral... Read more »

NiMH charger recommendations? rating: 5

First of all, this is a request for a *recommendation*, not a request for someone to do Google searches for me. - - - I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA at a time... Read more »

Electric Motor Wiring rating: 5

Hi I have an old Shopsmith Mk VII that all of a sudden wouldn't turn on. I tried replacing the capacitor (didn't help). I think it might be in the switch but no hope of replacing that. One piece s... Read more »

question about running electronics off of a portable generator rating: 5

I'm thinking about getting a portable generator and have a couple of questions. First off here are the specs that I have on the generator: 5.5 HP * 3.2 gallons fuel tank * 2200 watt rated output * 2... Read more »

I know FLA & LRA but what is RES (on contactor label) rating: 5

I've got some contactors that show Full Load Amps and Locked Rotor Amp figures but then they give a RES figure which may be in amps too - not sure. I've asked a couple of guys with no luck. Can on... Read more »

2005 NEC Table 310.16 Online Calculator for electricians and electrical des... rating: 5

I have completed the online Table 310.16 wire size, ocpd, and voltage drop calculator. I can't find anymore bugs but maybe you can. It took me about 10 weeks during the last 10 years to build this ... Read more »

which MCB rating to use for my computer rating: 5

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I have no idea regarding electrical stuff so please help me! I wish to protect my computer from electrical damage since last week some short circuit in my house fried my mother board... Now I have up... Read more »

Nana Electronics power module ID? rating: 5

Nana Electronics Co., LTD power module in DC motor controller is in series with H-bridge thermistor and both are in series with AC mains and motor load. Label on module says MC-0005G. Any idea whe... Read more »

Compound-source static exciter analysis rating: 5

Hi, i am currently analysing a static exciter setup of which i included the following link to the schematic: http://members.home.nl/damellema/CS4.PNG It is a compound-source exciter, e.g. power to th... Read more »

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