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Search: Posts Made By: sparkie
Forum: LIVE PLC Questions And Answers January 20th, 2021, 02:08 AM
Replies: 45
Views: 3,491
Posted By sparkie
Yea. Here is a non-technical source, but I'm...

Yea. Here is a non-technical source, but I'm tired and don't want to pull up a datasheet.


https://www.m2.electrical101.com/m2.gfci-receptacles.html
Forum: LIVE PLC Questions And Answers January 20th, 2021, 12:30 AM
Replies: 45
Views: 3,491
Posted By sparkie
I see that your RCD has a higher threshold. Ours...

I see that your RCD has a higher threshold. Ours is like 3mA, 5mA or something very close. Is the RCD just used to protect your service conductors?


I think I've misunderstood what you wrote....
Forum: LIVE PLC Questions And Answers January 19th, 2021, 10:40 PM
Replies: 45
Views: 3,491
Posted By sparkie
Fault current does not go to the system earth...

Fault current does not go to the system earth connection. It goes to the system neutral. Most electrocutions like this happen because a normally, non-current-carrying, conductive surface becomes...
Forum: LIVE PLC Questions And Answers January 19th, 2021, 10:32 PM
Replies: 45
Views: 3,491
Posted By sparkie
Your RCD's are basically whole-house GFCI's. For...

Your RCD's are basically whole-house GFCI's. For our systems, we use separate GFCI's. We have individual breakers, receptacles, etc. It is just how our equipment evolved. Now, modern codes require...
Forum: LIVE PLC Questions And Answers January 18th, 2021, 07:32 PM
Replies: 45
Views: 3,491
Posted By sparkie
Mike Holt has some good stuff on Neutral to Earth...

Mike Holt has some good stuff on Neutral to Earth voltage as well. You wouldn't think a few volts between the two would cause so many problems.
Forum: LIVE PLC Questions And Answers January 18th, 2021, 04:23 PM
Replies: 45
Views: 3,491
Posted By sparkie
One of those was a New Zealand power engineering...

One of those was a New Zealand power engineering site explaining how that transmission system works. It is a shame that you have been in the business this long and never learned that you should never...
Forum: LIVE PLC Questions And Answers January 18th, 2021, 10:31 AM
Replies: 45
Views: 3,491
Posted By sparkie
I'm sorry, but it does exist, and it is in use in...

I'm sorry, but it does exist, and it is in use in parts of the world today.

https://www.engineeringnz.org/programmes/heritage/heritage-records/single-wire-earth-return-swer/

A master's thesis...
Forum: LIVE PLC Questions And Answers January 18th, 2021, 02:50 AM
Replies: 45
Views: 3,491
Posted By sparkie
This information isn't false. ...

This information isn't false.


https://en.m.wikipedia.org/wiki/Single-wire_earth_return
Forum: LIVE PLC Questions And Answers January 18th, 2021, 02:38 AM
Replies: 45
Views: 3,491
Posted By sparkie
Rotary and solid state. I'm doing a few VFDs this...

Rotary and solid state. I'm doing a few VFDs this week to free up power on the solid state converter. Those power electronic ones are super nice.
Forum: LIVE PLC Questions And Answers January 16th, 2021, 12:33 AM
Replies: 45
Views: 3,491
Posted By sparkie
I often find myself dealing with stuff on farms....

I often find myself dealing with stuff on farms. It is still what you remember. Three-phase isn't common at all. I install quite a few phase converters.
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