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Hello All, I have been away for so long...i have been busy with bust computers, fitting solar panels, collapsed marriage and a bit of courting in no particular order! Now we have a large pv job to look at that requires a 300mm sub main installing.  The boss has priced it at £15000 for the...

Cheers Paul, The electronic version is good for something then  :Applaud

As I always tell the story.... I am not that old (well turning 50 in a couple of weeks) and I started my personal safari on the 14th last edition ( the one listed with amendments 1976) If you look at the list of editions I am around half way down so all the editions before me cover the...

Yes Kerching... So where are the 100s which are now listed as CENELEC regulations

Hello All, Just a quick question for all the eagle eyed ones among you. The new BYB mentions this 100 and 200 numbering system.  100s are for CENELEC documents and 200s are for UK only.  I can see 200s here and there but no 100s.... Can anyone spot one?

Hello All, I know I should not scoff but while working through the new BYB I note that I have spotted a first howler.... 1)  table 41.3 on page 58 --- they have repeated a line for c type breakers in the d type section. More to follow I am sure :innocent alan

Yep Steptoe, A hard plastic sheath with solid drawn conductors... OK to work with and I seem to remember it from 15 years ago in Scandinavia on a doctor's jolly

Hello All, I work for a local company wiring PV systems in this new fangled cable they call hi-tuf or euro-tuf.   The other day I was looking in the regulation book and did not see a BS number for it.  Today in the wholesaler I raised the point and asked what is the BS number for this stuff...

Yep Steptoe, I will agree with that,  but that was and continues to be  the fault of the people and government, not the EU.  If the EU was run properly, and I believe centrally and transparently it would work.  The end game vision is a united states of europe with separate state/federal laws and...

Even though all is not perfect, I believe it would be a mistake to leave the club.  My reasoning is thus..... in '73 when we joined up, we were an industrial nation who were large exporters and a genuine top table powerhouse doing a lot of trade with the commonwealth et al. The UK of 2013 is a...

Yes, but it would be handy if there was  note or something, explaining the point.... and the reg mentions 'protective device'  a little cryptic for me.

Hi Binky... perhaps but here is another thought that occurred to me today.There should be a regulation that states along the lines of... A PV generator shall not be installed on any installation, which by its nature is protected by an RCD. In other words... following on from this thread, a PV...

As I said before, this whole business sort of snook up on me.  I had read the regulation about not connecting on the downstream side of a protective device that supplies other circuits.  However, I did not click on the significance of it.  The strangest thing is that despite its importance, it...

Excellent point canoeboy.....

Hi Sidewinder, I have not shown the earth on the inverter for clarity.  However the thing is built, the frame is an exposed conductive part with the magic bit tucked inside.  The drawing is a general  show of the point made way back by Phoenix.  As long as there is no insulation fault anywhere...

Hi Steptoe,  Try this...IT.pdf The victim is smiling and safe.  The arrows it the circuit that would kill him if the neutral was closed.   An IT system basically means the supply floats above earth, a bit like a shaver socket i guess.

Anyway.... on a job today I looked really clever informing the contractor that the install was dangerous because of the problem spoke of here.  Worse still it was a three phase RCD with a  (solid neutral)  so it the event of a trip the inverters would not be isolated from earth.... OUCH Hi...

Hi Prodave, The assumption of L-E was based on your original comment with the man driving the nail in the wall and getting a shock which trips the RCD, however. he then is to be electrocuted by the G83 inverter.  Pheonix has stated, correctly that this is not so.  As to the L to N shock...

Hi Steptoe, It makes no difference.  As Phoenix alludes, when the RCD opens the neutral is disconnected. The fact that it connected to the earth at the cut out is irrelevant.  The inverter can pump away and any contact is 'electrically separate' a la a shaver socket.

 No Sidewinder,  You are missing the point that Phoenix makes I drew it out to get it in my mind. When (if) the RCD main switch trips on an earth fault the both the L and N are disconnected from the supply.  Even if the inverter carries on pumping, you cannot get a shock as the whole...