02-28-2018, 03:41 PM
Speedy wrote:
They pulled the original wire because code called for 240v to a garage but there was no requirement to have an actual 240v outlet in the garage. It future proofs things. You can verify code by calling the inspections office. You can ask your question in a manner that would imply you are just getting some thoughts together on what you might want in an eventual garage.
This makes sense, but I was going to suggest that generally a 4th wire is used for 2-pole switch arrangements, where you might have two separate on/of switches controlling the same outlet or fixture for example.