Terminating SWA with Wylex REC Supply Isolators

[Michaelwgroves]

I need to terminate 16mm SWA 2 core cable in Wylex REC Supply Isolators. Going to be using armour for earth. Whats the best thing to do with the earth. I have 12 of these to install. The only idea I have is to terminate armour on steel trunking then run 2 cores into Wylex REC Supply Isolators. Lastly connect earth back to intake. I'm sure there is a better way, I dont want to use steel trunking unless I have to?

See link below for Wylex REC Supply Isolators
http://www.tlc-direct.co.uk/Technical/DataSheets/Wylex/WYREC2.pdf

 

[Guest55]

fair do's HT , just keeping the mods on their feet. ;-)

i notice silence on my earlier question.........

 

[High Tower]

which one mate?

 

[Octopus]

Im not sating your wrong mate but i dont think i would feel to comfy running 12 T&E subs through a building with no RCD protection, i just think a SWA is a better idea. but as i said before that is only my opinion and preference.

Only competent sparkies reviewing the site/build would be in a position to define the appropriate solution!

 

[Guest55]

which one mate?

which mod or which earlier question ?
lol.
my questions on the OP's spark involved in his job.

 

[High Tower]

I dont think there is anything wrong with the OP exploring all possibilities and at the moment he has not asked us to explain how you would go about carrying out such a install and has only discussed the different methods. which i think if you are going to spend that kind of money there is nothing wrong with familiarizing yourself with all of the possible options.

I dont think any of us has divulged enough information for anyone to try and attempt the install

 

[Octopus]

I dont think there is anything wrong with the OP exploring all possibilities and at the moment he has not asked us to explain how you would go about carrying out such a install and has only discussed the different methods. which i think if you are going to spend that kind of money there is nothing wrong with familiarizing yourself with all of the possible options.

I dont think any of us has divulged enough information for anyone to try and attempt the install

Don't you believe it!

AND if you read the OP again you DO get the impression he is the sparky too.

 

[Engineer54]

Originally Posted by Engineer54
I would expect there to be a means of local isolation before the Ryefield panel!! You could even use a suitably sized/rated 3 phase (if this is a 3 phase installation) Fuse DB, with a main isolator. Any thing is better than the proposals put forward so far, for separate this and that's!! lol!!

Only problem with that is that it means the isolator would isolate all 12 flats which isn't exactly ideal

Exactly the same as with a Ryefield panel, with a main isolator or switch fuse supplying that panel!! The DB fuses will be the main protection for the flat supplies and also a means of isolation should the need arise!! No requirement for there to be any means of main isolation within the DB, the tails can be directly connected to the DB phase and neutral bars...

Think i understand what you mean now, your talking about an interlocking isolator switch, where the door can't be opened without the isolator being in the off position!! ...lol!! ​

 

[Michaelwgroves]

Don't you believe it!

AND if you read the OP again you DO get the impression he is the sparky too.

I thought we had put this to bed, but so we hopefully can let me give you some more information;


Some of the work requires planning permission (additional flat), so building control involved.
Upgrading mains requires UK Power Networks.
Additional Meters requires EDF
HMO licence involves council
Charity as tenant means dot all the i's and cross all the t's.

I really can't see how anyone other than a qualified electrician could take on a project this size for starters, but if a DIY'er did, do you reckon he could get passed all the departments above?
Surly it's just not possible; and if it is, I don't need to know how.............

Okay, about me; I want to know everything, even if I don't need to know, I want to know. Imagine your worst customer, that's me.
Everyone that works with me knows what I'm like, they talk to me straight. When I meet a tradesman for the first time, I tell them what I'm like. One builder friend refuses to work for me because I'm too annul.
I don't cut corners, but if I can get the same job done cheaper I will. I can be hard to work for, but I make my requirements very clear at the outset, if your work is not up to it, don't take the work on.

Another reason is co's there are a lot of sharks out there, true storey...... In the office the boiler broke down 3 weeks ago. Girl in the office called plumber, he said needs new boiler £2,600. She called next plumber, he said yep new boiler £2,800. Need to move boiler as you can't have electrics (fused spur) under boiler!
I then got involved, asked plumber to meet me on site. I got thier early, checked error code and phoned manufacturer, they said part A or Part B, both in stock, several pounds each. Plumber turns up, I asked why he can't fix, he said you can't get parts as the manufacturer no longer exists. Imagine the look on his face when I told him I just got off the phone and this is how you fix it, it was a picture. That afternoon I booked a call with British Gas who fixed it on one of thier fixed price deals.
This is why I want to know, co's only then can I truely be confident I am getting the best soloution at the best price, simples!

My sparky is excellant, but that does not mean he has a monopoly on idea's, only when you air your idea's to many can you truly be assured of the best idea.

I hope we can now move on.

 

[Michaelwgroves]

Okay back to basics, here's an image of how I think it should look. I'm only showing 6 units, but it will be 12.
I want to keep all the meters together in the intake cupboard for easy reading. EDF will bill tenants directly.
I want the ability to isolate each flat independantly at this point.
It is highly likley the cable to the CU's will pass through walls, it appears best to use SWA just in case. It also looks likly the load will go over 60A, so SWA makes sense here and future proofs the project.

I'm off to research Ryefield panel, I assume this is still best option at the moment?

 

[jaydee81]

best option in my opinion is 12 metal clad switch fuses control gear direct do good one for about £50 and 16mm 3 core swa

 

[Michaelwgroves]

Okay, I now understand Ryefield board. So this covers the fused part but I still need the switch bit?
Single switched fuse on each leg seems to be the answer as mentioned a few times, but it would be nice to have a single box soloution. Does such a thing exist?

 

[pennywise]

6 by 6 steel trunking or bigger in an E shape, terminate all armoreds into the top row of the E then have the two banks of 6, wylex 63amp switchfuse isoloators with a space next to it for the DNO's meter.

 

[johnboy6083]

You only require single pole isolation on TN supplies, and that can be achieved using a ryfeild board or similar.

each installation will also have a main switch in the CU.

 

[High Tower]

You only require single pole isolation on TN supplies, and that can be achieved using a ryfeild board or similar.

each installation will also have a main switch in the CU.

So you don't think it wise to have a isolator per SWA after the meter so it becomes possible to isolate one sub main without shutting down the whole building

 

[High Tower]

6 by 6 steel trunking or bigger in an E shape, terminate all armoreds into the top row of the E then have the two banks of 6, wylex 63amp switchfuse isoloators with a space next to it for the DNO's meter.

How do you split the tails 12 times without a Ryefield?