Originally Posted by
Llamaguy
I started it.
From what I read on the wiki though, blocks more than 300 away aren't rendered and just don't make the circuit. It could be old though, but I don't really want to test it.
Circuits that are more than ~300 blocks away from your current position will cease to operate due to being on unloaded chunks.
If I am reading it correctly, they will activate when you get within 300 blocks, so they work, just not until you get within the "chunk"