if it was power passing and nothing is on the other side then it would work as a barrel.
Edit: when they were building the house why would they use a high quality power passing splitter in the first place. the electrician is going to use the cheapest thing he can use to complete the job.
Edit: when they were building the house why would they use a high quality power passing splitter in the first place. the electrician is going to use the cheapest thing he can use to complete the job.