⏚ Electrical Engineering

Harmonic by inverters in large plant/phase shift transformer plan

Dear All, We are engaged in the design of a large plant. Problem is 5th harmonic due to 6-pulse rectifier contributed f...

3 comments posted 18yrs

posted by wangxuegu

3 comments posted 18yrs posted by wangxuegu

Clothes Dryer Moisture Sensor

We made a BIG mistake in December and purchased a new dryer with "electronic" moisture sensor. It's still under warrent...

135 comments posted 18yrs

posted by JohnLewisGilmer

135 comments posted 18yrs posted by JohnLewisGilmer

Advice on Rotating Electrical Panel

Hello, I am remodeling the kitchen in my condo and need some advice with regards to the electrical panel. Currently, it...

2 comments posted 18yrs

posted by thisdamnname

2 comments posted 18yrs posted by thisdamnname

static var compensator

I need to know about installation cost and technical information for static var compensator. Can anyone tell me from whe...

4 comments posted 18yrs

posted by nirajvivek

4 comments posted 18yrs posted by nirajvivek

foward & reverse switching on dc drive gear motor assy.

Hi, I need some help, I hope I can explain the problem correctly. We have, ac/dc control box, with a switch for off and...

2 comments posted 18yrs

posted by jbird943

2 comments posted 18yrs posted by jbird943

Mains Isolation of an entire house

Today I was asked to provide comment on an invention that uses the existing wiring (active+neutral+ground/earth) in a h...

4 comments posted 18yrs

posted by gregg.suaning

4 comments posted 18yrs posted by gregg.suaning

comprehensive elect engg handbook

can anyone suggest a comprehensive, useful, through Electrical Engineering Handbook........the author's name and from wh...

0 comments posted 18yrs

posted by shankar.debbarma

0 comments posted 18yrs posted by shankar.debbarma

I NEED PROFESSIONAL HELP!

When my water heater kicks "ON" some (if not all) of my electrical outlets serge to (136-139 volts) When I throw the ho...

9 comments posted 18yrs

posted by William-Hufham

9 comments posted 18yrs posted by William-Hufham

Contact surface area & household power transmission

I've been pondering a question lately that I figure you guys can help me with. There are, based on my casual observatio...

7 comments posted 18yrs

posted by slayte

7 comments posted 18yrs posted by slayte

Transformer Enclosure Question

Hello all, I'm new to the group. I have a 4KVA 415v to 230V (10"x4.5"X9") transformer that I need to find an enclosure...

1 comments posted 18yrs

posted by boon.joseph

1 comments posted 18yrs posted by boon.joseph

Suspected phone tap

I have never been a conspiracy theorist but I suspect that a particular group of people may try to tap my landline. I a...

64 comments posted 18yrs

posted by foxtrot

64 comments posted 18yrs posted by foxtrot

wire size for shop 240V circuits?

Hello, all, I'm still waiting for my electrician to come out and install a 6-circuit subpanel in my barn workshop for 2...

10 comments posted 18yrs

posted by at

10 comments posted 18yrs posted by at

Single phase loads on Open Delta

Hi everyone, Im an electrical engineer in europe, But now I have to design an Electrical installation where they have a...

25 comments posted 18yrs

posted by berry.korsten

25 comments posted 18yrs posted by berry.korsten

Half Wave Rectifier with Ideal Diodes

Hi, I am having trouble understanding the output voltage graphs about the half wave rectifier with the ideal diodes. Fo...

3 comments posted 18yrs

posted by mahadevan.swamy

3 comments posted 18yrs posted by mahadevan.swamy

LV Earth Fault

Anyone know if the earth terminal is talking about 10 Ohm impedance, TN-S earrthing. How can we perform earth fault prot...

12 comments posted 18yrs

posted by threecat

12 comments posted 18yrs posted by threecat