electric cars for kids 24 volt image
Smudgeward
I know that double thick volumes of wire are required for half the voltage twice the amperage so I figure amps are the pressure of the current but want confirmation from an electrician.
Out of intrest, as all resources become scarcer is there any possibility that America could change over to 220 to 240v standard domestic current to improve efficiency or will that always be a non-starter?
Answer
Approaching the speed of light, the differential "Pressure" is Volts the "Amount" (number) of Electrons is Amps.
CURRENT: I = V/R or I = P/V
VOLTAGE: V= P/I or V = IR
POWER: I2R or VI
RESISTANCE: R = V/I
Most homes already have 220 volts wired up, to run 220v appliances the difference is US is 60 Hz Europe is 50 Hz
I believe it is the "Safety" aspect (or maybe cost/benefit ratio) of running 220 volts that is the issue here in the US.
Sorry I. B. Zoxx got it backwards: The water pressure is the volts the water volume is the amps. You can have a Million amps available but if the voltage is below 28 volts and you touch it you will feel nothing (due to the resistance of your skin - some people have high resistance and can take a little more volts while some have less and can not take as much - I believe the safest voltage is 24 volts or less for humans).
Auto manufacturers would love to run your car on 120 volts (they could cut 50 pounds of copper wire from most cars) but alot of folks would probably die from touching bare wires in their cars LOL
Anyone with an electric car and the voltage is over 28 volts, DON'T TOUCH IT!.
Sorry I'm an EE not an Electrician the main difference I've noticed is that Electricians use their fingers to tell how many volts are on a wire while I use a Multimeter.........Just Kidding LOL
Thank you dmb06851 well put 8-)
Approaching the speed of light, the differential "Pressure" is Volts the "Amount" (number) of Electrons is Amps.
CURRENT: I = V/R or I = P/V
VOLTAGE: V= P/I or V = IR
POWER: I2R or VI
RESISTANCE: R = V/I
Most homes already have 220 volts wired up, to run 220v appliances the difference is US is 60 Hz Europe is 50 Hz
I believe it is the "Safety" aspect (or maybe cost/benefit ratio) of running 220 volts that is the issue here in the US.
Sorry I. B. Zoxx got it backwards: The water pressure is the volts the water volume is the amps. You can have a Million amps available but if the voltage is below 28 volts and you touch it you will feel nothing (due to the resistance of your skin - some people have high resistance and can take a little more volts while some have less and can not take as much - I believe the safest voltage is 24 volts or less for humans).
Auto manufacturers would love to run your car on 120 volts (they could cut 50 pounds of copper wire from most cars) but alot of folks would probably die from touching bare wires in their cars LOL
Anyone with an electric car and the voltage is over 28 volts, DON'T TOUCH IT!.
Sorry I'm an EE not an Electrician the main difference I've noticed is that Electricians use their fingers to tell how many volts are on a wire while I use a Multimeter.........Just Kidding LOL
Thank you dmb06851 well put 8-)
My wife wants to buy an electric car.?
madcityd06
In this part of the country there are not many of them. Have you owned one and how did you like it. How often did you plug in your car, everyday or after the 50 miles were used?
In this part of the country there are not many of them. Have you owned one and how did you like it. How often did you plug in your car, everyday or after the 50 miles were used? If you have owned one, would you purchase a second one or one to replace the one you already have. I am trying not to have this be a political discussion. I know the rumors. I just want someone who has owned one to tell me their experiences
Answer
You have to start by answering the question, "What do I need to get out of the vehicle?"
If your primary use is just to put around town like take the kids to school, run down to the grocery store, commute the 5 miles to work you can get way with a Neighborhood Electric Vehicle (NEV) or some times called Low speed Electric Vehicle (LEV). The cars are limited by law to 25 MPH (35 MPH in some states) but they recharge from any outlet you can plug your cell phone in.
If you need to take to the highway your options become severely limited. Currently the only highway speed EV available to the public is the Tesla Roadster at $120,000. Everybody else "is working on it and will be ready by 2010".
You don't need a 300 MPC (miles per charge) electric car. When you get home after a hard days work, you plug in the car, eat dinner go to bed. In the morning you get up, get dressed, unplug the car and leave every day with a full load of "fuel". Two minor additions to the usual routine and you've made the world a little better. A gas car doesn't self fill at night an since you don't want to visit the gas station on a daily basis 300 miles is a light range requirement.
The length of the charge time at night is irrelevant. I'm asleep so what difference does it make if it takes 1 hour or 6. Think how many hours a day is your car actually being used out of 24? The rest of the time it is just sitting, waiting for you to use it.
As for plugging it in everyday, don't you plug in your cell phone every day to charge it? An EV is the same deal, put the car in its parking place, hop out plug the cord in, go in and eat dinner. The rest is automatic and baring some kind of minor catastrophe your car is ready to go in the morning. You can also plug in wherever you stop, called opportunity charging, if your vehicle has a 110 volt charger. Since 80% of people put less than 40 miles on their car on a daily basis a 50 mile range isn't an inconvenience.
You have to start by answering the question, "What do I need to get out of the vehicle?"
If your primary use is just to put around town like take the kids to school, run down to the grocery store, commute the 5 miles to work you can get way with a Neighborhood Electric Vehicle (NEV) or some times called Low speed Electric Vehicle (LEV). The cars are limited by law to 25 MPH (35 MPH in some states) but they recharge from any outlet you can plug your cell phone in.
If you need to take to the highway your options become severely limited. Currently the only highway speed EV available to the public is the Tesla Roadster at $120,000. Everybody else "is working on it and will be ready by 2010".
You don't need a 300 MPC (miles per charge) electric car. When you get home after a hard days work, you plug in the car, eat dinner go to bed. In the morning you get up, get dressed, unplug the car and leave every day with a full load of "fuel". Two minor additions to the usual routine and you've made the world a little better. A gas car doesn't self fill at night an since you don't want to visit the gas station on a daily basis 300 miles is a light range requirement.
The length of the charge time at night is irrelevant. I'm asleep so what difference does it make if it takes 1 hour or 6. Think how many hours a day is your car actually being used out of 24? The rest of the time it is just sitting, waiting for you to use it.
As for plugging it in everyday, don't you plug in your cell phone every day to charge it? An EV is the same deal, put the car in its parking place, hop out plug the cord in, go in and eat dinner. The rest is automatic and baring some kind of minor catastrophe your car is ready to go in the morning. You can also plug in wherever you stop, called opportunity charging, if your vehicle has a 110 volt charger. Since 80% of people put less than 40 miles on their car on a daily basis a 50 mile range isn't an inconvenience.
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Title Post: Which is the speed of electrons in a current and which is the pressure: volts and amps?
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