It's a bit unintuitive at first, but the voltage would stay the same, however the frequency would increase. For home users this isn't such an issue today (ever

It's a bit unintuitive at first, but the voltage would stay the same, however the frequency would increase. For home users this isn't such an issue today (everything in my home with a motor, has a three phase motor, so there is an inverter inside to convert that from 2 phase AC -> DC -> 3 phase AC, so the frequency doesn't matter), but for industry it is as a lot of equipment needs 60/50Hz and will be damaged with something outside it's operating range. At multiple places in the power grid there are systems that will disconnect if the grid frequency falls or rises outside it's operating range. This is what caused the cascading failures and power outage over most of the country in the UK in 2019: https://www.ofgem.gov.uk/publications/investigation-9-august-2019-power-outage https://www.ofgem.gov.uk/publications/investigation-9-august...