New question.
I am running the 15w heater.
There are no outlets on the roof at school. No one will let me drill a hole in the building to bring a cord in.
But I have access to the room above me and my room. Is there a thin power cord that can be used to pass through the crank out windows and still have them shut. Part of the cord will be outside.
I can understand your frustration in not being able to get power to your heater but, I would not suggest attempting to run any power cord out a window and up to another floor above you. Can you imagine the lawsuits that would occur if anyone, not just students, were to get shocked or even worse, electrocuted. My advice would be to forget it if you can't get power directly and by a code-approved source. Door-bell wire is NOT approved for 110vac usage. Our weather stations are important to us but should not be taken to the point of exposing yourself or anyone else to potential danger.
It's just like amateur radio operators. Every year there are a few who forget about the safety aspect of the hobby and try to erect antennas near power lines and get electrocuted simply because they either didn't think about potential danger or they thought they were far enough away from the lines. A little slip here or there can spell disaster. Just recently four family members died as a result of their attempting to put up an antenna and it got away from them and hit the power lines. All four of them were electrocuted instantly.
Sorry to drag this on but I can't empasize enough the necessity of enjoying our hobby safely. I don't want to hear about any of us doing something we shouldn't do along these lines.