Thanks for getting in touch with us and I’m super happy to hear you’ve got an EV charger fitted! Sorry that you couldn’t get through to one of our members of staff over the weekend, our normal operating hours are between Monday to Friday (9-6pm)
So the standard amperage for a residential home is 100A, slightly older homes usually average between 40A-80A.
Getting a fuse upgrade is a job for your electricity distributor, I checked your account and so that would be the responsibility of Scottish Power, their number is 0330 101 0444 if you’d like to give them a ring
But something we can do is upgrade the meter tails to manage a higher amperage (80A to 100A), this is something our meter operators are responsible for and this will cost £120 sadly (this is the face value cost that goes directly to Siemens).
Hope this all helps @ojrackham!