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Thanks, I had not taken on board that the the "sticky" and "wiki" were two different things. In that case I'll attempt to create a wiki.

Apologies, I missed this. I'll be happy to post something if no one else is working on it? It will be a few days before I can get to it though. Is there any secret to making things stick in the wiki? Any authorisation required?

Yes and of course an LED driver needs to output DC at (and as you say) constant voltage for LEDs in parallel or constant current for LEDs in series. I think you are right on there being a transformer inside as the only practical way of providing true isolation from primary to secondary circuits...

The current carrying capacity of the cable (with the installation method factored) and rating of MCB will determine the maximum KW rating of the shower. 10.8KW (as I understand it) is the highest KW rating shower available in the UK. If you replaced the cable 6 > 10 then you would be obliged...

Not sure I fully understand your question? Do you want an alternative to ELV downlights for a bathroom zone? (LV is anything from 50VAC to 1000 volts AC) ELV is anything up to 50 VAC or 120VDC.

Yeh, the whole thing is ridiculous. You could monitor current by detecting voltage drop across a resistor (or a more sophisticated system) but you would need to go through a fairly tedious calibration sequence first (correlating the VD to a known load somewhere on the circuit) This thing is...

John, does LPG have a higher caloric value than natural gas? If so does that help offset the cost or have you already factored that?

Using it over each winter is not really temporary use. I recommend having a proper supply installed. Maybe two double sockets and a light. Many ways to do that but it depends upon proximity to your consumer unit or proximity to a socket to take a spur from. Either way it needs to be...

Just read the links, nope - no DSP in there. In fact it uses power and saves nothing so sounds like a trading standards case to me.

It probably is a PF correction device of sorts perhaps analysing the current/voltage ratio with a DSP then attempting to compensate with rapid current injection (isn't that the way some of the new fangled harmonic distortion PF correction devices work?) I can't quite get my head around it at...

Yes, the main challenge is in the "retrofit world" making the likes of halogen downlight lamp LED replacement difficult due to restricted space and making it work with existing TRIAC based dimmers. There is also the challenge of harmonic PF correction including EMC compliance which needs to be...

Are they in a position where they vibrate are subject to vibration? I mean from the surroundings? Are they mounted facing down, up or sideways? They may not be intentionally dimmed but are they suffering from under-volts? In other words, is there a significant voltage drop on that circuit...

HaHa, well I can't argue with that :lol: In fact I do not "blindly" support what has been done/the way it has been done and I miss the incandescent and indeed the thermionic valve!! but having worked (in the distant past) in the opto-electronics world then I think I can see a point (not too...

I don't disagree in principle but industry needs to fund itself then fold back some of the profit into R&D. In the collaborative development world of semiconductors one company can not develop all the technology or invest in all of the R&D (which costs billions of $s) If there were no plan to...

B&Q are related to "problemsolved" and charge £10/month. It's easy to make such comments but what about pro's as well as contructive cons? What fools are you referring to? Do you mean your potential client base? I don't disagree with all of your comments (at least to some degree) but...

The light from LEDs is somewhat monochromatic, at least it does not emit the broad range of wavelengths of an incandescent lamp but that is why they are more efficient, they are not producing more IR(thermal energy) than useful light which is what most incandescent lamps do. Well you should...

Now personally I like what I am doing now and do not want to make my living from what could be confused for a scam. But your comment is relevant because so many people do appear to be starting such sites. The big ones spend money on advertising and even back the likes of programs such as...

I tend to agree with you but these sites are capturing a huge amount of domestic electrical work. At what point do you say "if I can't beat then I'll join them" ? We have lost several domestic PIRs to such sites. One of them where the job was awarded by the client at £45!!! (a full PIR on...

Yes that MCB is under rated and therefore operating on the overload curve. If you ran the shower for long enough the MCB would trip I would not increase the KW rating of the shower but I would replace the 32amp MCB with a 40amp MCB which will still protect the cable but allow the MCB to...

MyHammer, ServiceMagic, RatedPeople, MyBuilder even B&Q/ScrewFix have a site. I was approached this week by a small start-up wanting me to pay £300 to be listed on an "Electric Booking" site allowing estate agents and local authorities to find "reputable" service providers!! Typically they...