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8X35=280 w/12v = 23.3A on 1.0mm2 volt drop will be high. why not run from trans. in as large a cable as will fit terms (4mm2 if poss), to a JB in middle of first 4 lamps and loop on to same again for other 4. short lengths of 1mm2 virtually no volt drop.

close; apprenticed 1963-1968 1966 first C&G exam, still sitting the blooming things at 62 years old! 2391-10 next week, last one ever! Can't take much more B-S, roll on retirement, glad i'm not just starting out! Feel sorry for those who are. Shouldn't moan really never had a day out...

Agree with what has been said, plus if meter co has problem with CU in 'their' box and cables all go up cavity, can you put second box above theirs divert wiring into new all rcd/rcbo CU with tails between boxes? I have just done this where room with CU in behind meter box was changed to a...

and why would an unearthed back box cause a 'shock' pray tell? yup!.... & yup! should be removed from the gene pool forthwith! but the decorators scraper is going to do that for us! Holmslaw how is the 'plate ' unearthed'? who is talking b0ll0x? In 43 QUALIFIED years in the trade I...

For once, speechless........ take pistol, load round, place to head, pull trigger! or go get a beer!!!!!!!!!!! why will some people not know when they are out of their depth?

Holmslaw/sparkwright you miss the point! The accessory/front plate is earthed by the CPC in the cable, under EAW regs nobody such as a decorator should be removing/loosening a live outlet or switch plate.

Is it 'good practice' to cram another unnecessary, pointless, bit of wire in an already small space? what does it achieve?

so a 'visual condition report', whatever that is, doesn't require testing according to the nic....sorry ESC. page 1 , 1.3. ...and testing if included on the order form....!!!!!!!!!!!!! Is this the £50 'drive-byes' i have been reading about? Wonder if they will count for HIPS later?

Devils advocate,,, Where in IEE regs. [not NICCY version] does it require 'pig-tail' to box in twin+cpc wiring? Only mention AFAIK of use of pig tail is when using conduit, swa, pyro as cpc as per reg. 543.2.7 and you are bringing earth FROM box TO outlet, not the other way. sorry for...

not so daft! mount sensor above level of lamp if poss. a bright light could cause it to switch off as soon as lit. if not poss. a side cover to shield sensor from nearest light may be simple way. even a bit of gaffa tape or black paint will work as long as top surface kept clean. Fit it and see...

normal practice is to fit fused spur or Dble-pole switch (20A) above worktop controling unswitched socket either on wall behind or on side of unit, not on hardboard backing.

so "I think its bad design practice..." so the IET OSG is not right then coljack? That's why they give tables and 'standard circuits' so we don't have to keep using oversized cables and redesigning the wheel. Diversity not included in a domestic ring circuit would need at least 6mm2 conductors...

Don't understand coljacks comment about not allowing diversity on final circuit? OSG page 96 "household cooking appliance" First 10A of rated current plus 30% of remainder plus 5A if socket outlet on control unit! Diversity for cookers has been allowed since 14th ed. at least, slight...

Hellmooth, having taught 2330 level 2 for a while & spent lots of time argueing with college boss over lack of time to discuss issues not being understood by adult students quit and now give help privately to a couple of guys doing as you are (for an occassional beer)! worked on military...

Come on fellas far too much testosterone around! The OP asked a basic (too basic?) question which many of us have tried to answer in a variety of ways, unsuccessfully I think. I would suggest he askes his tutor or one he can approach out of class and get a direct answer before we start trying...

Goldbergs analogy is good and often used, I find it helps people if you imagine a water tank connected to a long pipe via a pump, the pipe goes in a long loop and back to the tank, like a central heating circuit. turn pump on (light sw ), if you could put a pressure gauge at tappings around the...

thanks paulC ,daveM for info, bas for saving a bacon butty ... Paulc I have not yet found a double unit with plug/socket joints all the 40+ I have done had Round JB's on one half and coils of cable on other to be connected in, usually long cable from when tested in works site. some have a...

Thank you BAS for that kind, thoughtful comment, nice to see open debate on a poorly written subject so well received! I will do the forum a favour and not bother again, at least I won't have to worry next time I have to work on a 'plywood box' about registering the work, safety in the...

As I said page 209 of jolly red book, it is only applicable if connected direct, not if thro. plug/socket as I read it. Sect. 721 relates to caravans/motor caravans and as it says do not apply to the electrical installations of mobile homes,residetial park homes and transportable units where...

Davem, I regularly connect up 'park homes' on sites, they arrive from the factory with partially filled in test certs, ie missing site specific readings such as Ze,PFC, Zs but r1+r2's ,IR's etc completed. After connection I need to do full PIR as readings may have changed due to vibration on...