Been asked to carry out some bathroom work including new spots, underfloor heating etc. The existing DB is an old Square D board with no rcd protection at all. Customer wont pay for a new DB, and ive priced a drop in rcbo....... £177 each. Passed this info on to the home owner, and hes complaining (surprise). He's asked me about used ones from eBay etc. Normally i would just say no but there's a few quid in the bathroom works so im trying to find asolution. So, the big question.... Used rcbo yes or no?? I did explain to the home owner that i could offer no guarantee whatsoever for the rcbo if purchased second hand.