Mis-informed quote of the month

[bernardgreen]

I have just been talking to the son in this thread ,

//www.diynot.com/forums/viewtopic.php?p=1803905#1803905

where

A "qualified" electrician is refusing the client's request to wire the final ring circuits with 4mm ? ~~~~

~~~~ The electrician has calculated the voltage drop as being just less than 2% so insists 2.5mm is the correct and only cable to use.

and have some more information.

The "electrician" explained to the client that it was always necessary to have a volt drop along the cable to push the electricity along the wire and using larger than calculated cable would result in a lower voltage drop along the cable.

"Qualified electrician" then said

and when the volt drop between the ends of the cable is too low not enough electricity can flow to supply the appliances with the all power they need

 

[dingbat]

Well there you go then, Bernard.

Clearly the man is an expert.

 

[echoes]

 

[ban-all-sheds]

I don't know whether to laugh or cry.

Bernard - is there any chance you can persuade this "electrician"'s client to tell him that he is unbelievably incompetent and ignorant, so stupid that he shouldn't be allowed out unaccompanied and so dangerous that he should not be working as an electrician, to tell him that his services are no longer required, and that he will not be getting paid for anything that he has done so far? He's a complete menace, and needs to be taken off the streets.

 

[ericmark]

Sad to say it's not isolated. I watched a group of apprentices for N. G. Bailey's when working on building of Sizewell Power station. Their whole time was spent cutting tray, installing tray, and tie rapping cables to it. The poor guys seemed never to terminate anything, certainly never designed a circuit. Most terminating was done by my firm GEC.

These guys relied on college and what they were official taught and what they learnt chatting to other electricians. At that time 16th had not been out long and rummer control taught most people what it contained seeing the book was very rare.

And sorry to say we have a whole bunch of guys who are expert at fitting a gland without scratching it. And can dress cables to make them look really good. But when it comes to designing their own system have not a clue. They just do as they have always done.

Everything forward and trust to the lord.

 

[bernardgreen]

Bernard - is there any chance you can persuade this "electrician"'s client to tell him that he is unbelievably incompetent and ignorant,

His lack of in-adequate training in basic electrical theory was reported to the relevant organisation at the time.

To be fair he appeared willing to learn and had assumed the "training" and "examination" was accurate enough to make him an electrician. He was thrown off the job when he insisted that 4mm was not permitted on a ring. He later called to say he had seen the error of his ways but by then another electrian had been selected.

 

[wingcoax]

EX is something that has been and SPURT is a drip under pressure.

 

[holmslaw]

..

 

[mikhailfaradayski]

Did you know that electricity will leak if you leave 13A sockets switched on with nothing plugged in.

Did a job once where the client complained that since the rewire her electricity consumption had gone up. Told her it was leaking out because the socket switches were switched on and that she should never switch on a socket unless a plug was inserted.

She never complained again so I must have been right.

thats why i never use socket outlets with double pole switches. If you leave those switched on with nothing plugged in, they leak exactly twice as much as the single pole versions

 

[holmslaw]

..

 

[seasickstevie]

...a volt drop along the cable to push the electricity along the wire...

It's a good idea I think to run the cables downhill, so as to speed up the electricity!

 

[mikhailfaradayski]

Did you know that electricity will leak if you leave 13A sockets switched on with nothing plugged in.

Did a job once where the client complained that since the rewire her electricity consumption had gone up. Told her it was leaking out because the socket switches were switched on and that she should never switch on a socket unless a plug was inserted.

She never complained again so I must have been right.

thats why i never use socket outlets with double pole switches. If you leave those switched on with nothing plugged in, they leak exactly twice as much as the single pole versions

Absolutely, did you think I did'nt know that.

i knew you knew, but i also know that some people don't

 

[holmslaw]

..

 

[ELZ4742]

thats all well and good but remember, there are 2 ends to a cable... you need to find the right end or the electrickery flows the wrong way.

 

[bernardgreen]

It's a good idea I think to run the cables downhill, so as to speed up the electricity!

No the opposite is true ..... The live electrons are lively and have the energy to climb uphill, after being made to work in the lamp or appliance the neutralised electrons have so little energy left they need to be able to slide down the cables.