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Rank 2
May 27, 2025
Solved

Old fuse cut-out, isolation switch , possible meter tails upgrade in hope of fitting an EV Charger

  • May 27, 2025
  • 16 replies
  • 572 views

I’ll be looking to get a EV charger fitted in the future. 

I understand my fuse cutout (biscuit tin type) needs upgrading by the DNO which I have requested.

I suspect I need my isolation switch also changed . Can OVO do this , I’ve been told it is surprising this was not done , or reported when OVO changed the smart meter in 2021. (Should OVO have changed the meter with this old cutout ?)

Am I now likely to be charged for this service? Also unclear if the meter tails would need any upgrade. 

Any help with next steps appreciated 

 

 

Best answer by Lukepeniket_OVO

Hey all,

 

If the cutout is being changed why don’t we ask very kindly to the DNO (and provide hot beverages) if they could upgrade the tails and fit an isolator as they are there? I would assume they are removing that old biscuit tin iso, they might say no but worth a try.

You need 25mm Tails for EV installs =] Not that I am upselling but OVO do EV charger installs.

16 replies

Blastoise186
Super User
Super User
May 27, 2025

I think your meter tails look OK already. I can’t say for sure but that can be checked - just ask OVO and they can make arrangements for a check.

Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
Rank 2
May 28, 2025

OVO are quoting This is a chargeable job, costing £172 , to check the tails , does this sound correct given the fuse cut is having to be changed due to its age / safety ?

Ben_OVO
Community Manager
Community Manager
May 28, 2025

@Scoobdriver it might be best to wait until our engineer is there carrying out the isolator job, and asking their opinion of the tails when they’re on site. It’d be a shame for you to pay for the tails to be checked if that wasn’t necessary. 

 

@Lukepeniket_OVO is one of our Field experts, I’m wondering whether he may be able to give an opinion on this? I’ve given him a nudge but can’t guarantee how quickly he’ll respond on here.

Powered by the Sun
OVO Engineer
May 28, 2025

Hey all,

 

If the cutout is being changed why don’t we ask very kindly to the DNO (and provide hot beverages) if they could upgrade the tails and fit an isolator as they are there? I would assume they are removing that old biscuit tin iso, they might say no but worth a try.

You need 25mm Tails for EV installs =] Not that I am upselling but OVO do EV charger installs.

OVO Operations Excellence Manager and Former Field Operations Team Leader
Rank 2
May 29, 2025

Thanks ​@Ben_OVO ​@Lukepeniket_OVO 

Just to clarify, If I want the tails upgrading to 25mm and an isolator fitting , (as the DNO are not responsible for these, or the old isolator) Is there a charge to carry out both the job separately ? Its seems crazy that the tails and isolator can't be combined into one job ? 

Historic posts in the community state a reduced cost for an isolator when combined with a tail upgrade. 

Paying £172 for tails and then a separate £192 for isolator seems crazy and inefficient. Especially given this is dues to an upgrade of old DNO equipment which is no longer serviceable, and other supplier seem to carry this out FOC. 

Blastoise186
Super User
Super User
May 29, 2025

It is true that there used to be discounts for doing both those jobs at once. But it seems they were recently removed.

However, you may be able to negotiate a deal with OVO if you get lucky.

Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!