What's going on with this junction box?
Post date: 2022-01-24 10:16:34
Views: 323
I removed a ceiling light in my apartment only to discover a junction box with wiring I did not expect. Photo here. Left to right: two-strand white wire; four-strand blue wire; single-strand red wire.

This is an old (late 1960s) apartment building in NYC, and I'm all but certain the box dates to that time. The white and red wires were connected to the old lamp. It's the blue wire that I'm confused by. (All wires had wire nuts before I removed them.) I was hoping to see a green grounding wire, but alas.

So, what's up with the blue wire? Do I need to be calling in an electrician here? Thanks for your advice.
Number of Comments
Please click Here to read the full story.
 
Other Top and Latest Questions:
NFL and midterm elections set up prediction markets for a critical fall season
Goldman picks China healthcare stocks for a post-AI trade
Larry Ellison nixes plan to offload up to $7.5 billion worth of Oracle stock
Movie: Lethal Weapon 3
Book: The Dream Hotel
Realistic LSAT practice questions
what graphic memoirs would I like to read next?
What is the name for the relaxation/sleep music I'm looking for?
Any recommendations of what to do in Paris.
Cadbury cut two months off its supply chain lead time for a key chocolate-bar ingredient in one move