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Yes, 3A and 13A are the only properly recognised values, and its load is clealy in excess of 3A, so 13A it is

Shouldn't be too bad, 30-40 years old would probably mean a 15th edition install, bonds might be 6mm, but cabling wise, it'll all be as per modern stuff except for the colours. 2.5 has had 1.5 earth since 1981 ish. You'll likely have a lack of RCD to domestic lighting, concealed cables and...

Because before harmonisation we always used the L3 conductor (blue) as neutral and the L2 conductor (Yellow) as earth and it makes sense to continue doing that even though the actual colours have changed. If you have to do a joint, it makes sense to join everything like for like, if you wanted...

If he wants I can show him a retirment living complex with 60 self contained flats, all with their own cooking facilities, some with electric showers where I tallied up the breakers and worked out diversity properly, would need an onsite 1mvA sub, and where if I was designing I'd probably think...

Not cheap though: https://www.cef.co.uk/catalogue/products/3879894-16a-sp-10ka-type-c-mcb and AFAIK only available in C curve. You'd pay that if you had a few circuits to add to a nearly full 12 Way TPN QOE board but probably not worth it on this board. And make sure you are sat down before you...

As Kerching says, its rather rough, but I'd add that its not unusual, round here there are quite a lot like that, feeding flats above shops that were installed in the 50s and 60s. Looks like your supply does have its own fuse, so thats good, but if there is a burning smell, its not due to how...

If you are competant to design and install, then just use a three signiture EIC and just have him sign for inspection?

When you first go through the set up process, they set up a connection to the back end servers of the wall box (only OHME currently supported), and your app for that effectivly has ties to your octopus app for the tarrif (thats how they control when it takes a charge). Sometimes OHME will...

But of course you do need a compatable car or EVSE to get the tarrif, the low off peak rate is sort of a reward for allowing octopus to integrate and bring in the car charging load at the time of least demand (they promise they'll get it to the level of charge required by the time you require...

Don't fix unless you really need the certainty, we have just had one fall in the price cap, prices are suspected to fall again a little in October. Of course anything could happen, but unit rates are on their way down atm, very likely you'll be paying over the odds on a fixed tarrif in a few...

You could define your own codes and as long as they are referenced somewhere, either put XY = CBALE type whatever somewhere, or annex your list of codes if there is a lot in the installation, then you are fine. Common ones I sometimes use are: FP=Firetuff, AO* = LSF Twin and earth (I used to...

My biggest bugbear is equipment with switchmode power supplies which have components run to their limit and fail after about 5 years, especially annoying are the LED floodlights you have to change more often than you did SON lamps in the fittings before or the 1.5k refrigeration monitoring...

I'm sure your wiring is a lot better than my PHP code :ROFLMAO: Depending on when you completed your level 2 and 3 then 18th edition might not be necessary, generally the installation courses are deemed to qualify you to the current edition at the time, and the regs courses are just updates...

Deffo want to avoid the supply to the standaone RCD for the EVSE being on an RCD shared with other cirucits in the board. However, as long as this is a standard type A RCD (and nothing exotic like a type B) then I'd proably loose and pull the cirucit striaght into the board and put it on an...

Yes, and no..... When you do a board change, you issue a installation certificate for that work, and that will include testing all cirucits supplied from that board, and while its not an EICR, in most domestics thats all circuits that get tested and is a very similar level of work to an EICR...

I think sometimes its closed through a contactor and may just need some settings change, chances are it was run sync'ed with others and you'd only want one N-E bond in the system. Has this before on an event, got hold of the chaps doing the generators and got very quickly sorted. Can't remember...

I suspect its because they are very low volume these days. I suspect someone at MK feels they have to keep offering them because, well they still sell some, hardly anyone else does, and well they still have the tooling and its reasonably possible to do a limited run every so often and keep a few...

Theres actually more to it it than that, current wont go sky high as you are physically limited by the output of the panels, although if it was trying to power a large disconnected island, voltage would collapse down. But its also got to avoid creating an island out of a disconnected section of...

In answer to the questions: 1) I'm not sure I could swap the printer with another one from another room without IT invovement as I think the terminals may be locked down to specific printers (I'm guessing, but they have extra trays on for prescription blanks with a code lock on, so I preseume...

Wonder if anyone can make any suggestions on this, I've been asked to get to the bottom of an RCBO tripping problem after others at the firm didn't manage to fix the problem, and as to date, I haven't yet. Issue is within one of the treatment rooms (consult room but equiped to do minor...