What's going on with this junction box?
Post date: 2022-01-24 10:16:34
Views: 270
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:
Alphabet's decline happening at crucial time for stock, raises stakes for next megacap earnings
Google slapped with $1 billion fine under landmark EU digital law
Southwest Airlines' third-quarter forecast falls short as fuel bill climbs
Cleaning service in Boston/North End?
Objects in the mirror are waspier than they appear
Silo: A Dark Web Show Only
Game Changer: Count The Rice
Book: Lucky Day - Chuck Tingle
A tax break for preserving land has drawn IRS scrutiny. Here’s when it still makes sense
AARP to Congress: 'We strongly object to fast-tracking Social Security changes'