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Knob and tube wiring

Knob and tube wiring

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This was the original wiring in an old apothecary building. It was actually wired by Thomas Edison himself.

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Filename:20181109_122221.jpg
Album name:Fluorescent05 / Miscellaneous Electrical Stuff
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Date added:Nov 11, 2018
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Date Time:2018:11:09 12:22:20
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fluorescent lover 40
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Lights are awesome! :)


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Nov 11, 2018 at 09:57 AM Author: fluorescent lover 40
Pretty cool!

Power provider: Southern California Edison (SCE)

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Fluorescent05
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Zack


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Nov 11, 2018 at 10:30 AM Author: Fluorescent05
This wire is not used anymore for good reason. They have some old looking light bulbs in there. The building is now a museum.

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

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Peter


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Nov 11, 2018 at 01:56 PM Author: migette1
in the 50s wiring was run inside a type of flexible cover I remember it was named by 2 letters but do not know if its still in use as it was a long time ago and I returned back to England. Any chance of photos on those old bulbs...sounds interesting.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

streetlight98
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Mike McCann


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Nov 11, 2018 at 03:16 PM Author: streetlight98
@ Migette1: Any chance you're thinking of "BX" cable? A heavy galvanized steel spiral-wound flexible jacket around cloth and asbestos insulated single conductors. That stuff is long gone but its descendant, AC (Armored Cable) is sill around. AC cable is essentially the same thing but the outer jacket isn't as tough and the wires are thermoplastic and not cloth. Also, a tiny aluminum tracer wire is included for bonding. The outer jacket is actually what is used for the ground. Also, a newer type of armored cable called "MC" (Metal Clad) is available, which looks the same as AC on the outside, except there is an insulated ground wire inside rather than a tracer wire. With MC, the jacket is not used as the ground, although it is bonded by the box connectors. The company I work at only uses MC. No AC cable. There are also two types of MC, standard MC which uses the steel jacket used on AC and BX cable, and there's MC-LITE, which uses an aluminum outer jacket. That's the stuff we use at work. The cable weighs half a much, making it easier to pull. I think it's a little more expensive but you save that money from shipping since it's lighter.

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migette1
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Peter


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Nov 11, 2018 at 03:52 PM Author: migette1

@ Migette1: Any chance you're thinking of "BX" cable? A heavy galvanized steel spiral-wound flexible jacket around cloth and asbestos insulated single conductors. That stuff is long gone but its descendant, AC (Armored Cable) is sill around. AC cable is essentially the same thing but the outer jacket isn't as tough and the wires are thermoplastic and not cloth. Also, a tiny aluminum tracer wire is included for bonding. The outer jacket is actually what is used for the ground. Also, a newer type of armored cable called "MC" (Metal Clad) is available, which looks the same as AC on the outside, except there is an insulated ground wire inside rather than a tracer wire. With MC, the jacket is not used as the ground, although it is bonded by the box connectors. The company I work at only uses MC. No AC cable. There are also two types of MC, standard MC which uses the steel jacket used on AC and BX cable, and there's MC-LITE, which uses an aluminum outer jacket. That's the stuff we use at work. The cable weighs half a much, making it easier to pull. I think it's a little more expensive but you save that money from shipping since it's lighter.



Yes spot on,my memory must still be good LOL BX I knew it ended in X. My uncle swore by this and it was in a spiral like the shower pipes used on the bath shower unit. In UK we used plastic coated wires which would of been in a conduit made of steel. I still have good memories of that trip to NJ Nutley was the town. thankyou for your answer Mike.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

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