Why do circuit breakers go up for on and down for off?
Feb 11, 2023 Last reply: 2 years ago 1781 Replies
C
Commander Kinsey
From your own link, zero, yet they still make a fuss. "no electrocution has been traced back to a failed death cap "
Move to the UK, where we have the sense to understand the difference between live and neutral.
Only if you have a heart condition. How unfit are those singers?
And puts up with noise?
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C
Commander Kinsey
And you're still alive, what does this tell you?
M
Mark Lloyd
[snip]
My father always said "stylus", which he seemed to think was much better than a "needle".
C
Carlos E.R.
My first language is not English: I had to seek for a word I am not used to using :-)
J
John Larkin
The city electrical code.
New construction and repairs require permits and inspection.
Some things like commercial buildings get annual inspections, mostly for fire safety.
I can elect to take risks if I want to. A non-GFD outlet 9 feet away from a faucet doesn't seem very risky to me.
You can be tribal and snarky if you want to.
C
Carlos E.R.
Hum, the volume spindle would be live.
I must remember to grab one of my old radios from storage and test. I knew, but I have forgotten.
I'm curious. How?
The only Meccano motor I had came with no transformer, so I used batteries or my own transformer, which was safe. Never shocked me.
C
Carlos E.R.
Some countries have an inspection before electricity is provided for the first time.
Some countries have periodical inspections.
Also, if there is an incident, like a fire, or an electrocution, the insurance people can refuse to pay if there is no RCS.
T
The Natural Philosopher
The same way a car ignition coil generates 200V on its primary and 25kV on its secondary. Inductive flyback.
12v battery can give you a hell of a shock connected to an ignition coil cant it?
Think you need to revisit electrical circuits 101....
M
Mark Lloyd
[snip]
That "natural" could be only because that's what you're familiar with.
M
Mark Lloyd
I know someone who can't tell left from right without touching herself.
H
Herman H
Interesting that you felt a need to say both. If one way is on, you should already know what the other way is.
M
micky
Stylus was the new word, starting in the 1960's iirc. The original word was needle, and they looked like needles, steel pins with a point, about an inch long. Held in place with a finger screw. . I still have my mother's 78 rpm record player, probably from the 20's, and a couple boxes labeled "needles" "Guaranteed to play 10 records". I think it also says "genuine steel".
I couldn't really see the difference between a used needle and a new one, and I hope I didn't damage any of the records.
Her record player doesn't have speakers, not even one, or any controls except on/off. For sound you have to turn on a nearby AM radio and tune to the right frequency. I meant to check if that means I can listen all over the house, which would be really nice, but until just now, I'd forgotten about
Didn't find her brand but this is similar:
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Etsy.com also has old needles. I thought it just sold new stuff to make crafts, or newly made crafts.
C
Carlos E.R.
Ah, of course :-)
One of the things I had as a kid was a physics set made by Kosmos. Or an electricity one, I forget which had this experiment. Well, one of the experiments was to build an electric bell, running off a 4.5 battery. And then, a second experiment was to hold both electrodes in my hands.
Shock.
They said they made electric fences for cattle that way, but that it was safe. It wasn't a massive shock, just a shock :-)
I had forgotten that experiment. Never got that shock with a motor, though. Maybe my motors were smaller :-?
Sure does. It is also a massive coil, designed for that.
:-D
C
Carlos E.R.
I actually have seen those. I have an electric gramophone somewhere. Or did I give it to someone?
:-D
They do, new or not. Lots of weight in the arm.
No, that's not how they worked.
Radios of that era had a setting named "phone". And a socket. You connected the output of the "electric gramophone" pickup to the phone input of the radio, which was actually the audio amplifier section.
The radio could have a switch to disable the radio section or not, in which case you would have to "tune out" the stations.
M
micky
That's for sure. In fact it's lifting the arm off of its support that turns the steel turntable on. Arm weighs maybe 1/2 to 3/4 pound? Just guessing, but it's steel too.
Not like you to think you know more about my phonograph than I do.
Mine has no output jacks or cords. Just a small nice wooden cabinet with no holes, no jacks, maybe one 12" wire as a transmitting antenna (I have to go look again. Not sure if there's a wire.)
Maybe 14 or 16" square and 5" high.
It might be from the 30's after my mother got married in 1929.
I have been lucky enough that there was no strong station at the frequency. I left a note inside so I or the next owner doesn't have to hunt for it.
C
Commander Kinsey
Why bother with the cap? Just connect all neutrals and the stage together and to ground. In my house neutral and ground are identical anyway, there's only a two core cable supplying the house. Earths and neutrals from all sockets go to the 0V wire, all lives go the 240V wire. Simple.
C
Commander Kinsey
I doubt that's ever happened. Something falls precisely against it and it happens to be off?
C
Commander Kinsey
Then why do I remember seeing a blue light?
C
Commander Kinsey
Why do you misuse the word code? A code is some kind of encryption. You mean regulation. If Americans are to integrate with society, they need to learn to speak English correctly.
T
The Natural Philosopher
And not stalled. Essentially a stalled motor is a damn great inductor.
One of these...
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