I'm planning to run electricity in an exterior wall (kitchen) to add a power strip for our new fan. The insulation is about 17 cm thick. My idea is to run my flexible conduit behind a wall stud at one point. This results in the conduit being run about 5.5 cm "into" the exterior wall from inside the room. I've read several threads suggesting caution when running electricity in an exterior wall too close to the outside, as electricity theoretically emits some heat = condensation. In my case, my fan only draws 210W at full power, but still. Is there any regulation governing this? My common sense 
says I’m within the limits, but I’d like to hear if anyone has any opinions on the matter. Grateful for any help.
says I’m within the limits, but I’d like to hear if anyone has any opinions on the matter. Grateful for any help.
Certainly no problems at all in your case.
Condensation issues can arise when pipes are run from warm areas to, for example, cold attics. Warm air can then rise in the pipes and moisture is released when it cools down.
Personally, I've also had wet (telephone) wires in my hand from pipes in a cast floor, but whether that was due to condensation or water seeping in from outside is hard to say.
Condensation issues can arise when pipes are run from warm areas to, for example, cold attics. Warm air can then rise in the pipes and moisture is released when it cools down.
Personally, I've also had wet (telephone) wires in my hand from pipes in a cast floor, but whether that was due to condensation or water seeping in from outside is hard to say.
The only preventive measure you need to consider is sealing the pipe ends with some acrylic/latex caulk.