I'm used to seeing the neutral wire in the middle. They actually switch 60 times per second. You drew it at the bottom and I didn't look close enough. By across the load I mean the load is in series with the circuit. In this case the load is a motor. The ground wire is still used to ground the frame. The voltage is a potential difference between two reference points.
The points of referance can be one of the wires and a neutral, or they can be on both of the wires. Graph voltage over time for one of the wires and you get a sine wave. Graph the same for the other wire and you get a sine wave. At the same instant in time these sine waves are degrees out of phase from each other.
They are equal phases single phase , but one of them is shifted degrees on the graph. Just like you drew it. Graph these on the X axis with the axis being neutral. The distance between any point on one of the sine waves and the X axis has an RMS max of volts potential difference.
Graph any point on one of the sine waves with the same point on the other sine wave and the RMS max is volts potential difference. So, you hook a hot and neutral together, you get volts RMS. You hook two wires together you, you get volts RMS. It means the average voltage.
The actual max voltage of one of the lines is around volts. But the sine wave only reaches that level for an incalculably small amount of time, so the usable voltage is normally stated as the RMS voltage. Sorry if this just adds to the confusion. Here is a link that might be useful: Wikipedia -- RMS explained. I was just waiting for someone to throw in that Root Mean Square thing.
Just an added thought, If you have some sort of multimeter, check to see that your service entrance has a GOOD ground connection to the transformer as well as the optional ground rod connection that many electricians?
For those in high electrical storm activity, a diode is available from electrical supply houses that can be connected to that ground rod. It could very well save you from dealing with your friendly? Sorry to dissapoint everyone, but v will spin your meter slightly less than v to do the same end work, be it a certain CFH of compressed air, or whatever end power use you want to compare.
This is due to less electrical power being wasted as heat in the conductors, and connectors. That's true, but it will take you several years to recoup that extra penney it is costing to run volts vs volts.
In other words, the savings is too small to be relevant. Well,dmullen, I guess you certainly know the difference between v and v by now. This was all quite interesting. Lots of interesting posts. I don't understand many of them but have decided that volt is the way to go. Well, Don, if does it in twice the time of you're actually paying twice as much. Therefore, would be cheaper. Danman, I totally agree with you. As it has been proven, a watt hour meter will theoretically read the same number of watt hours when it powers either an vdc electric motor or a vdc electric motor.
In actuality, a vdc electric motor is more efficient because it will draw less current amperage than an vdc electric motor which means there will be less opportunity to resist current flow and slightly less heat generated. This is all assuming that the vdc and vdc models are rated for the same wattage. I took no offense at all although I didn't understand a thing you said and I'm kinda' glad. Are you assuming the motor's windings and wires are exactly the same between the two different voltages?
Most motors are wired for the intended load. Therefore, a V motor would use a lower gage wire than a V motor, assuming the wattage and efficiency rating were the same.
I'm not talking about different applications for the motor where the number and gage of windings could be different. Yes, machiem, the motors will be designed specifically for the load they will be operating and the amperage they will be drawing.
But I was primarily speaking about the voltage drop that you will encounter from the watt-hour meter to the log splitter. And usually vdc extension cords are of a pretty respectable gauge.
I understand that all of this probably has a very little effect on the over-all performance, but there is still a slight difference.
So once again, assuming that the two models are rated at the same wattage and -- now I'll throw in -- assuming that the log splitter will recieve heavy use and the vdc model is comparibly priced, I believe that the vdc model would be better suited to the job. Anyone want to debate the savings caused by v vs v thru the extension cord?
Just bump the cord up a size and it won't matter. Of course my prior statement still holds. Gonna take you a long time to recoup that extra penney you save. Now, we have already beat this horse to death.
Are we gonna continue to beat a dead horse? I think it is pretty obvious what I meant. I don't know how I could have typed the whole post using the wrong electrical unit I knew what you meant. Hope I didn't sound too harsh. I'm getting sleepy and that makes me a growly bear. I guess I just don't understand the merits of debating a monetary savings that is too small to be relevant. Don't forget the cost of feet of copper wire using heavier gauges as you try to eliminate voltage drop heat by using a heavier gauge copper for the v.
Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Cover Letter What is the advantage of volts over volts? Cover Letter.
Ben Davis April 17, What is the advantage of volts over volts? Does v use more electricity than v? Is it cheaper to heat with or ? This lead to the current situation, where the pressure for a world standard is counterbalanced by the invested interests. For the same amount of energy V requires more current, hence thicker wires. In some rare situations V might be more dangerous to touch. I don't think 50 or 60 Hz makes any significant difference. An iron core for a transformer might be a little smaller at 60 Hz.
But iron cores are soooo last century It's hard to be definitive. There was a campaign by Edison to portray AC as dangerous, even going so far as to introduce an electric chair powered by AC electricity as an execution device, thereby demonstrating the "danger of AC". Once AC was widely accepted as being superior to DC for power distribution, V became the standard for AC distribution presumably because it used the "safer" Voltage level of the DC system.
After metal filament lamps became feasible, V became common in Europe because of the lower distribution costs. As for 50Hz versus 60Hz.. The same reason we still pave roads that go around buildings that were knocked down half a century ago.
Historically someone, or some group, picked a number in each country, others followed suit, and it became "a standard". Now we are stuck with them. The V issue is simply that once Tesla and Westinghouse proved long distance AC transmission feasible, the 1 issue driving the proliferation of electrification was lighting in houses, replacing the gas and oil lighting that was a major fire hazard of the day.
Then as personal appliances began proliferating, they were designed to take advantage of the VAC lighting circuits already used in houses and the concept cemented itself into our culture to where there was no going back. Edison, despite having investing in AEG as Europe began electrifying, was reluctant to allow a system in which Europeans could enter our market by selling electrical products here.
So after also experimenting with different frequencies 40Hz was the first major industrial installation, at the Folsom Power House in California , Edison and Steinmetz settled on 60Hz, partly because of the flicker issue, then also because it would make European equipment incompatible.
He wanted it all to himself He wanted DC because he owned the US patent rights to his DC dynamo even though he actually bought his first one, for proof of concept, from Werner von Siemens. Siemens had not patented it in the US. Only the rich would be able to afford it, and they would all be paying Edison for the privilege.
Despite the fact that writing is no recipe for wealth, I rather enjoy it. I will not deny I am obsessed with it when I have the time. I work from home where I ponder on the future of the planet, and what lies beyond in the great hereafter. Sometimes I step out of my computer into the silent riverine forests, and empty golden beaches for which the area is renowned.
Save my name, email, and website in this browser for the next time I comment. About Author Richard I tripped over a shrinking bank balance and fell into the writing gig unintentionally.
0コメント