Bizarre home electrical problem
Well I'm from America living in North Carolina but I can take a stab at it because I have a similar problem with my home. It will overpower by using too many amps. So you need to find out how many amps are on your A and B switches. I went through my house and marked everything with a removable sticker for each switch and each outlet. Then by process of elimination I found out which on/off switches and which outlets were controlled by either the A or B fuses in the box. Then you need to know how many amps your A/ B fuse can handle. If you have a 15 amp fuse then you cannot use more than those 15 amps at any given time. I hope this helps.