Hi folks,
I'm pretty clueless on electrical matters and have seen some pretty knowledgeable posters on here, so I hope y'all don't mind me posting what are probably some quite silly questions.
I'm getting ready for installation of a home charging point. I want to get my main fuse upgraded to 100A, and the DNO have said "first make sure you've got 25mm tails from fuse to meter and meter to consumer unit".
I understand that fuse-to-meter is my electricity supplier's responsibility, and meter-to-consumer-unit I need to get an electrician to handle. However, one thing that confuses me is how an electrician is supposed to isolate the supply in order to do that, since I understand that pulling the main fuse is a big no-no. Does that mean I should be trying to get my electricity supplier to do that as well at the same time as they handle their bit?
I know it's desirable to have an isolator switch so that this stops being a problem - and I actually do, but presumably that doesn't help if the tails to that need upgrading too...?
Also, the current one is only rated for 63A. But it looks to my untrained eye like the actual switches are removable. Do I need to get the whole thing replaced, or just the switches? And if the latter, is that something I can do myself, or is that a sparky job too?
Photo of the current setup below in case it helps. (The tails from the main fuse look slightly thicker than the others to my eye - maybe they're already 25mm? The meter was replaced with a smart meter recently, I've heard suppliers sometimes upgrade the tails at the same time as doing that...)
Thanks in advance!
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I'm pretty clueless on electrical matters and have seen some pretty knowledgeable posters on here, so I hope y'all don't mind me posting what are probably some quite silly questions.
I'm getting ready for installation of a home charging point. I want to get my main fuse upgraded to 100A, and the DNO have said "first make sure you've got 25mm tails from fuse to meter and meter to consumer unit".
I understand that fuse-to-meter is my electricity supplier's responsibility, and meter-to-consumer-unit I need to get an electrician to handle. However, one thing that confuses me is how an electrician is supposed to isolate the supply in order to do that, since I understand that pulling the main fuse is a big no-no. Does that mean I should be trying to get my electricity supplier to do that as well at the same time as they handle their bit?
I know it's desirable to have an isolator switch so that this stops being a problem - and I actually do, but presumably that doesn't help if the tails to that need upgrading too...?
Also, the current one is only rated for 63A. But it looks to my untrained eye like the actual switches are removable. Do I need to get the whole thing replaced, or just the switches? And if the latter, is that something I can do myself, or is that a sparky job too?
Photo of the current setup below in case it helps. (The tails from the main fuse look slightly thicker than the others to my eye - maybe they're already 25mm? The meter was replaced with a smart meter recently, I've heard suppliers sometimes upgrade the tails at the same time as doing that...)
Thanks in advance!
