12v from 240v no neutral?

[chcnorris29]

Hello,Was told this today and am wondering if it is correct.If you have 240v ac and do not use the neutral then you get 12v ac?Thanks

 

[Earthstore]

Just out of interest, what is the power consumption of a mcdonalds cooking range, and are they even available to the general public?

Yes they are, most of the unemployed have them to cook for all they kids...

 

[Lucien Nunes]

If I may offer a humble suggestion to the OP, when you are presented with an outlandish or suspect piece of information, instead of simply asking someone 'is this true', try to analyse it with the theoretical tools at your disposal. You were right to be sceptical but don't give up on answering the question for yourself at that point. Electricity behaves according to logical, predictable rules, which form part of the electrician's arsenal of problem-solving methods. If you apply basic electrical theory, the question immediately looks like nonsense, and answers itself for you. I often do remote diagnosis on electronic systems over the phone and I have to distrust everything I am told by the people at the other end, unless I can prove it to myself in my mind.

 

[Tiny Spark]

Or just tell him hes talking rubbish

 

[44ALLAN]

Originally Posted by chcnorris29
I am an apprentice yes. I did not believe what he was saying as I do not see how this would work without a transformer, this is why I was checking here.Thanks



Have you ever heard of a wind up cause I think that's what he is doing to you.

And while your at the trade counter can you pick me up a tin of tartan paint and some plastic masonry drill bits..........ta

 

[Earthstore]

And a skirting board ladder, a metric adjustable, a new bubble for my level, a long weight...

 

[Tiny Spark]

Bag of sparks....

 

[Lucien Nunes]

I would say though that there is a lot of myth and misunderstanding about what happens 'without a neutral'. I have met many a man who doesn't have a clear understanding of the effects of neutral loss in a 3-phase system, or what currents flow in a neutral from certain kinds of load etc. If I were going to try and catch a spark out on something, this would be fairly high on the list.

 

[Earthstore]

Bag of sparks....

Never heard that one... But a bag of assorted holes as I am not sure what size I will need....

 

[davethsparky]

I would say though that there is a lot of myth and misunderstanding about what happens 'without a neutral'. I have met many a man who doesn't have a clear understanding of the effects of neutral loss in a 3-phase system, or what currents flow in a neutral from certain kinds of load etc. If I were going to try and catch a spark out on something, this would be fairly high on the list.

I think I would have to approach that question after a few cups of tea, too early in the day and my answer would most definitely offend those of a sensitive nature!

 

[Tiny Spark]

Never heard that one... But a bag of assorted holes as I am not sure what size I will need....

Lol well thats a new one on me!

 

[Lucien Nunes]

a bag of assorted holes

We call them knock-ins. A lot of people think that when you are going to fit a conduit into a metalclad box, you have to knock a piece of metal out. Actually what you are doing is knocking a hole in. Benjamin Franklin made the same mistake with electrons.

 

[Des 56]

We call them knock-ins. A lot of people think that when you are going to fit a conduit into a metalclad box, you have to knock a piece of metal out. Actually what you are doing is knocking a hole in. Benjamin Franklin made the same mistake with electrons.

If you were to use a quantum cutter for these holes

I suppose you would only know if the hole is exists when you try and push that bush through and maybe then find its still solid metal lol

 

[Adam W]

It's not really a 'stupid' question if you don't know the answer and the person who's supposed to be teaching you tells you it's true - what reason would you have to doubt them?

I'd love to see the look on a tradesman's face if they sent their apprentice off for a glass hammer, some sky hooks and a bubble for their level and they returned with these:

Lifeaxe Emergency Break-Glass Hammer
Products | Skyhook-GB - Leading Safety Upwards
Plastic Cylindrical Vials | Level Developments

 

[Sintra]

And put them all on his account

 

[davethsparky]

We had a chippy send his apprentice down to jewsons for a new bubble for the level. Turns out stabila make a level where the capsule can be taken out and replaced. Cue a rollicking for the chippy when the boss got the invoice!