What's going on with this junction box?
Post date: 2022-01-24 10:16:34
Views: 235
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:
Higher mortgage rates don't just keep buyers on the sidelines. Application denials rise too
Is Gmail really not allowing other clients?
What should I do with a free day in Paris?
Tell Me Your Favorite ***** of the Day Websites
Widow's Bay: Your Baggage
Star City: A Bear on a Chain
Book: Against the Gods: The Remarkable Story of Risk (1996)
Blackstone restricts flagship fund withdrawals as private asset fears reemerge
Stargate SG-1: Between Two Fires Rewatch
Amazon engineers in Seattle slam employer for building AI data centers while laying off 30,000 staffers