100a Isolation Switch Cost

[davesparks]

Yes I would expect that. So why then would most electricians apparently not want to do the job unless they were also in with a good chance of doing the CU too? Or more bonding or whatever else was deemed unsafe ? I suppose they don't want to do it for the same reason the suppliers and DNOs don't want to. Not much cash in it for the risk.

I suppose its completely reasonable that a fully qualified and professional electrician would not want to travel somewhere just for eighty quid or so. I just wish it was more transparent and not masked under safety issues.

Its also interesting that you're working to the 18th. The one electrician I did contact said he would only fit a metal box to house the isolator. Did that rule come in with the 19th ?

P.S. If I do eventually get the isolator fitted by the supplier and if those tails are 16 should I ask before hand about upgrading to 25 or when the guy gets to site? Should they upgrade them as part of the isolator work (i.e. at no more cost)?

P.P.S. I'd love to know the name of the company that does the isolator for £68+vat ?

This doesn't make much sense, you say most electricians won't do the work without doing a load of other work, but then go on to say that you've only contacted one electrician?

The 18th edition is the current one, the 19th edition doesn't exist yet and probably won't be coming out for another 6/7 years (but hopefully longer)

The first question to answer about the tails is what size do they need to be?

 

[Deleted member 112675]

Apologies I didn't mean to say 19th. Said it once then repeated myself.

Just checked the ring binder and it is of course the 18th edition.

 

[Gavin John Hyde]

Call a company called haste they will come fit a isolator and pull fuse, including any required tails for £92 inc vat. Sse will allow you to pull the fuse but its down to your confidence and being safe.

 

[HappyHippyDad]

Then the SSE are wrong as we cannot legally pull main fuses. Only the DNO’s and power supplier companies can do that.

I was about to quote reg 537.1.3 which has a note at the end of it which says you can withdraw the cut out fuse if authorised to do so by the DNO, I would class the email that the OP got as authorisation for the electrician to do just this.

However, for those of you who have the BGB and the BYB you will see that this reg is in there, but checking the BBB it seems that section 537.1 has been reworded and I cannot find it now.

 

[M4rtyj]

I was also referring to company called haste, couldn't remember the name.

 

[HappyHippyDad]

@sparkless2 It's really not a good idea to change the consumer unit yourself. You could easily just see where all the cables went before and just change them over to new consumer unit which has some form of RCD in it. That is just like me copying word for word what a French person says but i have know idea what it means. You may even think you do have a little electrical knowledge, that will be even worse with a consumer unit change as it may give you the (incorrect) confidence to do it.

One of the most important (if not the most important) aspect is having the correct testing equipment (i.e a multi function tester so that you can test the RCD's are tripping correctly amongst many other tests. The testing can sometimes take almost as long as installing the unit itself.

I do admire the fact that you've come clean and admitted what your plans are, you also sound like a fairly sensible chap..... so don't do it!

 

[DefyG]

As an NICEIC Approved Contractor I wouldn't hesitate (and have done) in pulling the main cutout fuses (incl 3phase) where the need arises, to fit an isolator or whatever the need may be. An isolator change is a relatively easy job (I'd allow typically) 30mins (1ph) 45-60mins (3ph) when on site so not going to be mega £££'s.
Funnily enough I have one to fit soon on an agricultural property (3ph) but my time in getting there and back will be far greater than the actual cost of fitting the device (materials excluded).

We then notify the DNO (in our case SSE) what we've done and that it needs re-sealing. In reality I doubt that it hardly ever gets done and cant say I've returned to site to check.
Sometimes we might fit our own seals if think tampering might be an issue.

As HHD post above, get a professional sparks to look at changing the CU. Its not a job for a DIYer!

 

[naylorpd]

I had this work done recently...
I needed to upgrade the tails between the meter and the CU from 16mm to 25mm and chose to add an isolation switch at the same time so that I could isolate my house CU and wiring without having to pull the fuse or break any seals in future...

The electricity supplier (not the DNO) needed to do this work, because they had to disconnect/reconnect the tails at the meter, which had the supplier's seal (different to the DNO's seal which is on the main fuse).

My CU had been newly replaced by a forum member, but before the isolator was fitted, due to the 3 week delay. The whole installation was checked thoroughly, not just a rewire of what you see in the cupboard.

No matter what qualifications a sparky has, they are not allowed to do this as they can't re-seal the meter. Tampering with the seals is a criminal offence because the implications are that you are unsealing the meter to steal electricity. Seals are apparently inspected about every 3 years or so - even though you regularly send in your own meter readings, eventually the supplier will insist on the meter being read by one of their guys and this is one of the things he'll be looking for.

Total cost for the job, tails plus isolation switch, was £130. Job took about an hour by a sub-contractor to the elec supplier (ironically, who was studying to be a proper electrician in his spare time).

The downside is that in my case it took at least 3 weeks to get an appointment for the work to be done. Also the electricity supplier will only speak to their customer, so if you own the property but your tenant is the customer, he will need to cooperate for the job to happen.

 

[Midwest]

I’ve replaced meter tails before now, my DNO SSE (as already said) allows Scheme members to pull main fuses.

As far as I’m aware, cutting a seal is not a criminal offence. Illegal abstraction of electricity is; to be found guilty of this offence, would require more of an actus resus, than just cutting a seal.

I’ve revisited various properties, where I’ve followed the correct procedure for cutting a seal etc. Some still had the temporary seals I had installed, some had shiny new Suppliers and or DNO seals. I don’t think there’s an active campaign to inspect seals, especially if the energy supplier is getting its money’s worth in payment for their products.

 

[davesparks]

I had this work done recently...
I needed to upgrade the tails between the meter and the CU from 16mm to 25mm and chose to add an isolation switch at the same time so that I could isolate my house CU and wiring without having to pull the fuse or break any seals in future...

The electricity supplier (not the DNO) needed to do this work, because they had to disconnect/reconnect the tails at the meter, which had the supplier's seal (different to the DNO's seal which is on the main fuse).

My CU had been newly replaced by a forum member, but before the isolator was fitted, due to the 3 week delay. The whole installation was checked thoroughly, not just a rewire of what you see in the cupboard.

No matter what qualifications a sparky has, they are not allowed to do this as they can't re-seal the meter. Tampering with the seals is a criminal offence because the implications are that you are unsealing the meter to steal electricity. Seals are apparently inspected about every 3 years or so - even though you regularly send in your own meter readings, eventually the supplier will insist on the meter being read by one of their guys and this is one of the things he'll be looking for.

Total cost for the job, tails plus isolation switch, was £130. Job took about an hour by a sub-contractor to the elec supplier (ironically, who was studying to be a proper electrician in his spare time).

The downside is that in my case it took at least 3 weeks to get an appointment for the work to be done. Also the electricity supplier will only speak to their customer, so if you own the property but your tenant is the customer, he will need to cooperate for the job to happen.

Your information is incorrect, electricians are permitted by certain DNO's to break the seals.
The DNO can do this work, it doesn't have to be the electricity supplier, there are also independant companies who are authorised to do this. As you say there are subcontractors doing the work.
Cutting seals doesn't equate to prosecution for theft of electricity, they will have to prove the theft for this to happen. If there was a sudden drop in electricity usage that coincided with the seals being cut then they might take an interest.