That's because taking a measurement in that way from neutral is misleading. Infact, it's used as an have you been paying attention in class trick.
I'll ask this another way then.
Why do you think the secondary is providing two distinct phases when the primary only has one phase? Where is the second phase coming from?
A lot of LEDs have more than one junction inside. You can change the amount of power to each.
Reputable people are wimps and scaredy cats, and you pay them more to do the same job so they can have all those safety logos on their vans. I just use folk who get on with it.
One that kills me instead of making me jump. And it's voltage I worry about, not current. My car battery can give out 400 amps, but I can't even feel it.
I tend to do alot of the work I do with live circuits carrying a significant amount of voltage and current behind them. And yet, I don't manage to get bit. So wimp/scaredy cat doesn't apply to me. And, uhh, I see no reason to pay someone else to do what I already do for a living. I'm one of those people who's qualified to do it themselves. People that realize they don't know wtf they are doing call someone like me to do it for them. You're obviously the exception.
You obviously don't understand the relationship between the two which is dangerous when you make the decision to play with electricity. Although your car battery doesn't have enough volts for you to feel it even if you grabbed a post with each hand, it has more than enough current to weld with for a short period of time. OTH, if you reduced it's amperage output to next to nothing and provided it the ability to generate say, 2,000 volts, it wouldn't be able to weld for shit (or succesfully engage the starter on your car despite the voltage being much much higher than what your starter requires) and it would barely 'sting' you if you grabbed both posts.
If you had a firm grasp of the underlying principles, you'd understand why that's so. Needless to say, you're not someone who should be messing around with electrical devices. You're a danger to yourself, other people, and equipment/material.
What a pathetic wimp you are. You take precautions against a little 240V jolt? Do you also worry about if it's going to rain and take an umbrella?
It does if you're being cautious about only 110 or 220 volts.
I know what I'm doing and do it myself, but if I paid someone, I'd avoid the ones with certifications all over their vans, they just cost more.
Actually the power you can get from a car battery converted to 2000 volts would most definitely kill you - it's capable of about 5kW. I've got an insect killer which uses a transformer outputting 2000 volts at **9mA** which is enough to evaporate a bumble bee instantly. A car battery would be able to give out 2000 volts at 2.4 amps.
Clearly not, as I've survived ten shocks. I'm just not wimpy enough to be scared of something that only causes momentary pain.
Uhh, try 277/480+ volt three phase, most of the time. And that's just the main feed. Once you feed it to say a neon sign transformer, the rules change a little bit. You don't have to literally touch an output wire on one of those. Once you hit 1000 or more volts, the rules change a little bit. It's no longer you're safe as long as you don't touch the wire, if you get close enough and you're a source to ground, it's going to reach out to you. The more voltage on the line, the further away it can jump to greet you. If you're using say a bucket truck to reach it, you are a source to ground, so you have to treat it with extreme caution. No, the neon sign transformer isn't pushing enough current behind the voltage to kill you, unless you have a medical condition or something, but it's going to sting if it reaches out for you. And depending on how you reached it, that sting/jolt could be enough to make you lose your balance, footing, etc, and fall. Which would wind up hurting/killing you as well. So even if the juice didn't toast your ass that day, the resulting exposure to it still ruined your day.
For safety, I treat them all with the same respect though. It only takes one mistake and you aren't going home. It pays to be cautious, regardless of the voltage you think you're working with. You can't rely on the plating all the time, you're meter is far more honest. And you never know if some jake leg or tired electrician before you did something wrong, so you can't just 'trust it', either. Check for yourself. And never assume the color code is written in stone and everyone follows it to the letter. Check the wires yourself.
I realize that getting bit is part of the job sometimes, but, you aren't supposed to be going out of your way to have that happen. You're supposed to be trying to avoid that. So if you're taking shortcuts to save time and getting bit for it, then I wouldn't say you know what you're doing. I'd say you were a jake leg and a danger to yourself, equipment, and, others.
That depends on the conversion process. Did I raise the voltage only and drop the amps to the point of next to nothingness? After all, you don't get anything for free. There's always a tradeoff.
If so, it's going to give me a nasty shock and that's about it. A standard taser can generate 20kv to 50kv or more, and, most of the time, won't kill you. hell, the coil on your car generates 20kv or more to ignite the gasoline for you. If you come into contact with it, it'll give you a good jolt and that's about it. It doesn't have the amps the car battery does. Not much different than the magneto on a lawn mower engine. It'll shock you good, but, that's about it. It doesn't have much current behind it. And voltage without current isn't going to do much on it's own.
You aren't a bumble bee, though. and 2000 volts at 9ma isn't going to do any real harm, unless you have an underlying heart condition. Betwen 100ma and 200ma you can be killed. Above 200ma you have a good chance of being saved if you can get medical attention fast because your heart shut down in a protective state and can be restarted, most of the time.
Where do you get these figures?
The fact you've been bit ten times because you're choosing to take shortcuts and risk it, only supports what I already wrote. It has nothing to do with being a wimp. Electricity isn't something you need to prove your a 'big man' with. It doesn't care and can kill you just as easily as it can a kid, under the right conditions.
As I suspected then. You were doing stupid shit the majority of the time. Don't confuse your luck at failing to be electrocuted with electricity being harmless.
Are they telling you what they had running of the circuit when it tripped? It may not have been a false trip.
As I've told you before, it's not necessarily the voltage. It's the amperage. Around 20ma can prevent you from being able to let go.
I find your comments concerning my country to be rather amusing from the standpoint that you're writing from your ass about it. Everyone doesn't dismiss as childish stupidity. And even if they did, some people would still try.
10 instances of non-death more or less prove it isn't dangerous.
No problems fund, just girly breakers.
I hear that shit all the time. You do realise voltage CAUSES current?!
I've disproved that 10 times.
Please write in clear English, not Southern American chavvy crap.
It proves nothing of the sort, James.
That wasn't an answer to my question...
You should take a refresher course on electricity, James.
Umm, actually, you haven't done that, either. You have proven you're quite ignorant concerning electricity and the potential dangers of playing with it when you don't know what you're doing, but, I don't think you meant to do that. I admit though, I could be wrong about that.
My english is clear. I don't know what Southern American chavvy crap is?
Of course it does. Do you understand statistics at all?
Yes it was. The breaker tripped when there was no fault to trip for. A fuse wouldn't have done that.
Don't you even understand basic ohm's law?
I've proved that TEN shocks didn't cause me any harm, just a fright. That's quite enough to show it's nothing to be concerned about.
You are harder to understand that most.
This guy failed. Maybe you could show us the proper method?
If it's not fake (and the comments say it is), that was considerably more than 240 volts.
snip
I try to be broad-minded, but how can anyone who is not a deliberate troll or terminally stupid describe falling off a ladder as "hardly life threatening"? Did you know that that sort of remark is really irritating?
Falling off something rarely needs even a hospital visit.
Uhm. So, it's reasonable to assume at this point, you ARE trolling just to be trolling? Your electrical knowledge is borderline stupid/dangerous level. But, the comments concerning falling off a ladder or your vague comment above just makes it that much worse.
Perhaps he thinks working on a 240volt circuit (or even 120 volt circuit just to make it more interesting for purposes of discussion) under load causing a 'shock' that causes you to part ways with your ladder 40ft in the air is no big deal. Certainly not a life threatening event, you should be able to land without so much as a scratch. Right? :)
Fuck. If that video isn't edited, he's likely very crispy
Indeed I do. it's one form of math that can be twisted to lie, but, it's mathematically sound.
Again, you neglected to answer my question. Did they tell you what was running off that circuit when it tripped?
I'm not discounting the possibility of a bad breaker, I'm asking you a very simple question. You neglected to mention what kind of breaker it is, too. if it's an arcfault/gfci breaker whatever was on the circuit might have been causing it to trip. A fuse wouldn't know anything about either condition and so wouldn't necessarily blow in whatever event was taking place, instead, it would happily keep the current flowing when it might not be a wise decision.
To put it another way, the fuse won't do anything right away if you drop a hair dryer into the sink filled with water and reach for it, not thinking. A proper circuit breaker on the other hand will notice something is up before you even touch the water and shut the show down, before you become another Darwin award winner.
Voltage is the difference in charge between two points, or it's potential. Current is the rate at which it flows between those two points. And resistance is the materials tendency to resist the flow of charge. Copper has a lower resistance than aluminum so it makes for a better conductor. If you get the copper super cold, it has nearly no resistance to it, which makes it far easier for the current to flow. The problem is, keeping it that cold. If you have access to liquid nitrogen, you could try an impressive experiment with it sometime. It would make you sick to see how much energy is lost under normal temperatures vs keeping those same wires super cold. Super conductors are a subject for another time though, if you're interested.
Are you trying to play word games with me James? Aside from being insulting in a childish way, that is.
Umm, no it isn't. And, you've only proven that you have a high resistance to a point and/or don't mind getting shocked. To assume the voltage and current you were exposed to is harmless to everyone else is a stupid thing to do, though. As depending on the voltage and current, it can cause anything from a mild shock to severe burns, to cardiac arrest and/or respiration failure. It can paralyze your muscle control and cook you from the inside out, like a microwave cooks a hotdog.
And that's not even including the harm an arc flash can do to you, in milliseconds. It's not something you can 'duck' if you're in it's path. First comes the shockwave, then the arc flash you can see and feel (heat, intense heat) along with liquified copper/aluminum or whatever else was the conductor of the day.
Hmm. It's been a long time since I last conversed with someone who complained about having a hard time understanding me.
Only if you're a sissy. Oh no, scary electricity, can't touch!
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