What's going on with this junction box?
Post date: 2022-01-24 10:16:34
Views: 329
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 rates will create winners and losers in bonds, says UBS. Where the bank sees opportunity
OpenAI sparked Hugging Face bids with early investment offer ahead of Nvidia's $13 billion deal
Anthropic launches cheaper AI model, its second release since CEO's call for a slowdown
Meta's splashy new business AI hire offers yet another reason to bank on Zuckerberg
Dark Matter: Love and Be Loved Show Only
Snowpiercer: A Beacon for Us All Rewatch
lofi hip-hop games to relax/study to
How do you hang up your heaviest skirts?
Camping kettle
Luckin Coffee, flush with investor cash, weighs entry into Middle East markets