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A recent job has a combi boiler which is being swapped out for an ideal logic system boiler and tank. It's currently supplied by a 2.5t&e on a 6amp mcb. The boiler itself requires a local 3amp fuse. Which isn't s problem. But obviously now there's the tank to contend with. Can I swap out...

I don't, your word is good enough for me. But, the plumber seems to believe it's a C (cause ones he used to fit required a D and doesn't believe that it could be a B), and i just can't be bothered with the arguements and contra-charges if he want's the cable to be different. :) Like i say...

Well, because the plumber is convinced it should be on a C type (he's the one involved in certification of the pump, so not too fussed about arguing.) and the cable cost isn't our concern, it'll be a plenty big enough to get the EFLI low enough. :) :) cheers guys much appreciated. Info...

Yea they do 3 models in the ecodan range, this is the middle size one. This setup is underfloor heated on RF controls and a 3kw tank. But no roof pannels. Real blunder now is that the cable route now between pump and tank has been plastered due to the plumber changing his spec so late into...

Gas supply is heat welded plastic pipe right up to the meter box now, onto a gate valve union, followed by the flexi and regulator, meter, then consumers copper supply pipework. So not much continuity there. Can also see merit in an electrode, would remove this possibilty for the sake of...

As the OP mentions at the substation. I'd assume there'd be some "along the way". As more and more gas/water becomes plastic, how long before they're totally useless to us for these instances.

Surely due to PME the neutral would still be earthed?

Hey guys. Anyone had any previous experience with a mitsubishi ecodan? Basically, we have all the details off the plumber, and have also called their pre-sales tech' line and still not got any solid answers. The unit it self has a running current of 10.3A, and specs for a 25A earth...

Exactly my thinking too....But, i was just being paid to do as I'm told there, so didn't question it. HAHA Although it weren't earth clamped to plastic, it certainly wasn't going anywhere after. A copper "stub" would be inserted either side of the stop-tap to connect said cable to.

The last company i worked for would still run a 10mm earth to the incoming water main, even thought it was a plastic supply pipe and the internal plumbing installation was in plastic too. The only copper in the houses was always less than 1M long other than were the drops to the boiler and...

Fantastic guys, gives a little more on what is to be expected. I've just spoke my boss from what i gather, it's going to be the "usual guy" to do the UF heating. The plumber that was there today is only doing the hot 'n' colds, boiler and cylinder. l think it's cause to do with that the other...

New build i'm wiring, the plumber doesn't seem to have much knowledge on what he's installing in regards as to wiring required. I've not really come into much UF heating installations, and any before the guy we used to use was really clued up on what he required to do his work. Or he used RF...

At college now they're teaching +10% -6% for both single phase at 230Vac and three phase at 400Vac. With a 1%+- of 50Hz in 24hrs for frequency. :)

if you look round the internet on company sites, as their promo stuff.... you can find many shocking installations of CU's.

remove the fuse wire and bridge the gap with some 2.5mm core.

the busbar is split into 2 halfs to allow for the RCCB at either end and then 6 breakers on each. if i'd not used all 1-4 it'd have ment that the 6th breaker on the busbar would've been on the wrong side neutral/eather bar. I thought the numbers were more to identify the neutral/earths as...

if i'd not used 1-4 it'd mean i'd have 2 circuits on the right hand busbar on the lefthand. neutral/earth bar. the busbar was already split into 2 preset halfs.

yea, i get that longer and bendier runs have a need for bigger bore. But if the presure is there, and the system is balanced ok.... it should work surely? didn't realise they were well known for issues.

have you just pulled the front off your board at home? :P

an injector is controling the amount though. providing the flow can supply the amount needed there's no reason to have a bigger pipe, surely? i get the thing of taking least path of resistance etc, but if enough pressure is there to feed all..... (i agree on balancing may be required.) i'd...