Hello, I want to connect a hot tub outside on the patio. It is a plug and play with a standard 13 amp plug. It is around 10m away from the house. I have been told it draws around 7 amps when all equipment turned on. Is it best to connect an outside socket somewhere near using 2.5mm twin and earth cable with two cables back to the ring main or 1 armoured cable as a single spur from the closest ring main