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I just had ours done, needed a dedicated 20A supply for the outdoor ASHP unit (armoured cable), a dedicated 16A supply for the immersion element in the unvented cylinder, and a 5A fused spur for the controller.
I ran a draw cable underfloor (bit of spare CAT6A) for the future EV charger, so that when we’re ready to install we can just pull through whichever will be the most suitable cable at that point in time.
I'm getting my consumer unit upgraded soon as part of wider work. Do I need anything special done to make sure it's ready for a heatpump when I decide to get one in a few years?
Probably need to know the same thing but for an EV charger...