The Panasonic split system I am proposing for an upstairs bedroom is 2.5kw. I have had three quotes so far. Two want to take the supply from a spare mcb on the (new)consumer unit. I have one 6 amp and one 16 amp spare. The other one says it is no problem plugging in to upstairs socket and taking all the power from there. Upstairs is on a separate 32 amp mcb protected ring. It has very little load as no heated shower. Would just be vacuum cleaner, a shower pump and hair dryer really that would draw anything. What I really want to know is the latter acceptable/meeting regulations as I do have other plans for the two spare mcbs in the consumer unit if possible.