I want my electrician to install a 2way consumer unit inside my outdoor meter box. The unit has rcd mcb and is ip65 rated. The box will feed a garage that is about 15m away. Am I allowed to put the unit inside the meter box (there is enough room) my spark seems to think it's not allowed and wants to put the unit inside the house which would mean putting it in the lounge! The main house consumer unit is the other end of the house so it's not an option to feed the garage from that. Can unit go inside meter box??