Hi, I'm just about to rewire a property that I've bought ready to let to 3 students - two bedrooms + one bathroom upstairs, extra bedroom + sitting room + kitchen downstairs, garage outside to be let separately - and was hoping one of you proffessionals could spoonfeed me a little advice. I've had one piece of advice already from a local sparkie telling me not to do it, but I'm not going to take him up on that one! Rest assured I know I shouldn't attempt to hook up the new consumer unit to the supply and will get a qualified electrician to come in after me. I've bought myself a great little book called the Which book of Wiring and Lighting and am confident about the wiring side of things - eg I've installed new lights in my own house and know what colour wire goes where etc - so its really some of the bigger details I'm not sure about such as how many ring circuits. Here are my questions: 1. How should I plan my ring circuits? At the moment I believe I will need (MCB) lighting downstairs (including stairwell light), (MCB) lighting upstairs, (RCD) sockets downstairs, (RCD)sockets upstairs, (RCD) garage. Given that I will need interlinked smoke alarms and possibly a burglar alarm is this the best most modern arrangement? The cooker will be gas connected and the shower is mains powered. 2. Any recommended split load consumer units? To keep things simple I will stick to MK branded. The supply is 100A 3. As a separate job I'm going to board the loft and it already has insulation so I thought I would nail battons to the joists with gaps in for the perpendicular wiring What's the recommended depth for the battons? Also the cable will obviously need to dart down at some point to feed the upstairs lights - can I just leave a gap in the insulation for this? 4. For the garage I don't want the renter to leave the light on accidentally because the students would be paying for the electric - is there any device that will automatically cut out after say half an hour? 5. I'm always on the lookout for ideas to make life easier and so far have found a plug in ceiling rose, wireless doorbell and self adhesive trunking. any other bright ideas? All advice appreciated!