Confused! Plese help..

[Michael Leek]

Hi all,

An old electrician here, I'm not actively in the trade anymore but I'm currently studding for my part P and might go for the 17th as some time. I learnt under the 15th, I have the 16th, the home study course I'm doing details a number of drawings which I've disputed with the company, they have confirmed that the drawing below is correct. I'm really confused, a phase connected to an earth via a breaker, can someone please help??

 

[Pete999]

Odd very odd

 

[Strima]

Erm, I don't think that's quite right...

 

[Rpa07]

All kinds of weird - never seen that pic before!

 

[Pete999]

Which company are you dealing with, Michael?

 

[Michael Leek]

Which company are you dealing with, Michael?

Hi, I don't want to mention the company in case of copy right on the drawing, but it's an online course. I know I've been out of the game for a few years but i've never seen anything like it!

 

[Pete999]

Hi, I don't want to mention the company in case of copy right on the drawing, but it's an online course. I know I've been out of the game for a few years but i've never seen anything like it!

Got to be a misprint, do you,or are you intending to join one of the CP Schemes? if so speak to their technical department, when you called the company did you speak to a technical person, or some customer service muppet with no technical knowledge.

 

[Michael Leek]

Got to be a misprint, do you,or are you intending to join one of the CP Schemes? if so speak to their technical department, when you called the company did you speak to a technical person, or some customer service muppet with no technical knowledge.

Thanks, not sure about a CP scheme, i'll follow that up. This is their reply:

Our subject matter expert who is an electrical installations lecturer at an FE College and a City & Guilds examiner has reviewed the images and confirms they are correct.

Thanks for your interest

 

[Pete999]

Thanks, not sure about a CP scheme, i'll follow that up. This is their reply:

Our subject matter expert who is an electrical installations lecturer at an FE College and a City & Guilds examiner has reviewed the images and confirms they are correct.

Thanks for your interest

Get in touch with the City and Guilds for an explanation

 

[Michael Leek]

Thanks, will do.

Regards

 

[Pete999]

Thanks, will do.

Regards

Let us know how you get on, please.

 

[Michael Leek]

Let us know how you get on, please.

Will do, thanks again Pete.

Regards

 

[Pete999]

Will do, thanks again Pete.

Regards

You're welcome

 

[Wilko]

Possibly a surge protector and it's isolator?

 

[sean_ork]

It's not a breaker ......

https://electacourse.com/topic/pme-protective-multiple-earthing-tncs-2/

 

[HandySparks]

Looks like it's been drawn by someone who's never designed or wired an electrical system. Maybe been drawn up from someone else's sketch and not checked.

 

[Michael Leek]

Hi, can you reconfirm the link above please as it's not opening correctly. Thanks.

 

[Michael Leek]

Hi, can you reconfirm the link above please as it's not opening correctly. Thanks.

 

[Michael Leek]

Just thought I'd give you an update. I replied to the online course author and questioned again the accuracy of the drawing. This is there reply:

"Michael,
Our electrical installations author has responded.
You have sharper eyes than our picture editor and than our author first time around. You are correct, there should be no connection between the earth and neutral. Even I, a publisher and not an electrician can see the error.

We have corrected and republished the diagrams.
Thank you for this. It is not often errors are found and we very much appreciate when they are pointed out to us and we have the opportunity to make corrections"

Make me wonder what else is wrong in the on-line course!

Thanks for your input.

Regards

 

[HandySparks]

When they've re-drawn it, you could get them to post it on here. It'll get a proper checking.
(There's loads wrong apart from the N/E issue. For a start, if they're going to show a neutral bar there should be two of them, and two wires in the same MET hole is poor.)