ya for eubiq, to connect the power is to turn about 90degrees counter clock wise after you plug it in, cannot be slide so actually depending on the plugs you buy, you may not fit so many on the track. Sorry for the wall, i think believe the correct word should be partition, if you "really" wan to pay a lot, can ask your friendly contractor to knock a trench into your partition and plaster it, check your house plans to see which wall can be knocked cos the track is actually quite thick. As for the short circuit issue, unless you really go and pour water over it until the embedded track kenna submerged then it will short circuit for the track, there a 13A fuse to prevent shorting out your whole house. Actually need quite a bit of water (tested so you guys no need to test liao) but i dun recommend mounting it flush with your coffee table thou... and if some water seep in just wait until it dries, its an expensive track not worth to spoil it