What year were these MEM boards installed?
I would think 30 years ago or more. Any thoughts
-
Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.
Age of installation
- Thread starter seasickstevie
- Start date
What year were these MEM boards installed?
I would think 30 years ago or more. Any thoughts
I think you're probably right, which makes it iro forty years old.
Interesting when someone implies that the house was recently rewired.
Interesting when someone implies that the house was recently rewired.
They lied then. The new cable colours (Brown & blue) came in to use from 2006, so the black/red wires mean they are 20+ years old.
Unless they mean recently means a quarter of a cetury ago..!
Of course, there was nothing to stop someone rewiring a house in the old colours after 2006, but really????
And those Type 1 MEM MCBs are pre-2001. The sides of the MCBs, or the CU box may have manufacture dates.
Actually Part P was 1 Jan 2005, and I'm sure at least 6 months before, red and black had all but disappeared.
But no matter, that silvered stranded 6mm dates it I think to the 70s, if not 60s I reckon.
It was nothing to do with Part P.
if the house is 500 years old, 40 years might be considered "recent"
As above, harmonisation of the the cable colours was nothing to do with Part Pee.
Actually …it was like this
- Joined
- 27 Jan 2008
- Messages
- 27,400
- Reaction score
- 3,307
- Location
- Llanfair Caereinion, Nr Welshpool
- Country
I would have to agree, but we have some landmarks when there were major changes.if the house is 500 years old, 40 years might be considered "recent"
1) Earths on lights, 1966.
2) Move from rubber to PVC, not sure of date, but also mid 60's.
3) No longer able to use water pipe as an earth, also around the 60's.
4) Use of ELCB-v discontinued, moved to ELCB-c. Think the 70's?
5) Use of aluminium small gauge cables, late 70's I think, after Ian Smith.
6) Move from fuse to MCB, fuses still allowed, but around early 90's we saw them go.
7) The type tested distribution unit, (consumer unit) think late 90's.
8) The 30 mA RCD, I know I fitted them mid 90's.
9) The 30 mA RCD required outside, BS 7671:2001 I think?
10) The 30 mA RCD for sockets, and bathrooms, BS7671:2008. Also, change of rules for earthing.
The list goes on, however the Part P did require paperwork to be raised, so after 2004 we see a paper trail, the BS 7671:1992 saw the introduction of exams to show one could read the regulations, before that time rare to find an insulation certificate, but by the time BS7671:2008 came out, we had gone into the days of the compliance or completion certificate. Today they can be found online on many council websites, but not all.
I know I was asked for the certificates when I sold late mother's house, and was given them when I bought this house, (2018) although realised latter it only covered part of the house, not the whole house, but I was not really worried about the electrics, that was well down the list. We can look at the rule book, 2008 for example.
But we all know (iv) was not really complied with, we saw loads of split boards being fitted, and electricians at the time would argue they were allowed. I could not see how a house split side to side for sockets, and up/down for lights, could be supplied from a two RCD board.
However, before the 30 mA RCD it was common to see a whole house on a 100 mA RCD, no one worried about it, and we still see caravans and mobile homes supplied from a single 30 mA RCD.
We could debate what was allowed until the cows come home, there is simply no hard and fast rule. And if the board showed was in a caravan, we would not question if allowed or not. We assume caravans have 12 volt lighting, but on holiday this year, there was no 12 volt or any other but 230 volt lighting, and the whole site was full of similar caravans.
My home buyer's report did cover the electrics, it said there was a disused fuse box in the ceiling space, but it was not disused, it fed all but the flat under the main house.
I suppose the question is, should the solicitor be asking for paperwork, and should the buyer be asking for the reports? And is an EICR part of the home buyers report, or should it be commisoned independent of it, if the latter where do you stop, gas safety reports, reports on if central heating OK, flood risk etc.
Harmonised colours for fixed wiring in the UK were introduced in 2004, with a two year transition period, so red/black was considered "acceptable"* until 2006.
Of course what was acceptable and what was actually available can be different things. I presume the suppliers wanted to phase out red/black as quickly as possible to avoid being stuck with unsellable stock. Some DIYers also explicitly sought out red/black cable because, in light of part P, they wanted to make their DIY electrical work look older than it really was.
* To the extent that the likes of the IET get to define what is "acceptable" anyway. I installed some red/black cable in my parents garage recently and did not feel bad about doing so.
Long before that!
I'm not sure that 6mm is tinned.
Anyway, it's metric cable, and green/yellow sleeve. So sometime after 1974
The fact is has 30ma, points to 80's
Anyway, it's metric cable, and green/yellow sleeve. So sometime after 1974
The fact is has 30ma, points to 80's
- Joined
- 25 Apr 2023
- Messages
- 9,197
- Reaction score
- 6,336
- Country
It has to be 80s, well I think so anyway...
70s would be rewireable
90s would be split load
Ish...
Recently rewired can actually mean different things to many people, I`ve had people ring me and say "You`ve just rewired my haouse and the immersion heater has stopped working".
Existing cylinder stat has packed in 5 or 6 years after I did the rewire including the new circuit but not a new heater or stat! Because its not 50 years ago it is newish to them!
Mid 1980s.
MCBs are Type B which only existed in BS3871 from 1981 onwards.
Main RCD BS4293 which is most likely the 1983 edition of that standard, and that was replaced by 61008 in 1990.
MCBs are Type B which only existed in BS3871 from 1981 onwards.
Main RCD BS4293 which is most likely the 1983 edition of that standard, and that was replaced by 61008 in 1990.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
