[Dottore]

We recently had an extra room built out by a friend. He installed a baseboard heater which worked for a week or so, and now has completely given up the ghost.

Am I right in thinking these things require special wiring and should be wired back to the breaker panel?

I have swapped out the thermostat, but this has not solved the problem.

Because of the very awkward location of the new room, I suspect my friend may just have run the wire to an existing plug.

I know very little about electrics, but would be interested to hear what is normal for wiring a baseboard heater. The room is about 12 x 14 feet.