hi ive been getting my house rewired recently and the sparkie has went on his holidays before he had time to finish properly (everything was wired up and earthed except for the loft) and ive been having some problems with my rcd's tripping, not sure if its a fault on my consumer unit and something i could sort out by just getting some new breakers or rcd. my consumer unit has 2 rcd's and my bedroom socket is on the first rcd which works fine when the second rcd is switched off but if both are on and i plug something in upstairs they both trip but the breaker my bedroom ring is in doesnt trip. my consumer unit was second hand but "practically new" is what the sparkie said and ive checked all the wires through the floor and everything seems connected fine, right thickness cables and in a sufficient breaker. any clues to whether i need a new rcd or two or if its something else? any help is appreciated, thanks.