Posted: 11/8/2010 5:20:26 PM EDT
|
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like:
Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. |
|
http://bugclub.org/beginners/math/WattsVoltsAmps.html
This may help. It's a conversion table. You can't really convert watts to amps, but you can get an idea at least. Voltage is potential, current is what does the work, and watts is the amount of work done, if that makes sense. |
|
Quoted:
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. Yes, it does depend on how you achieve it. it is dependent on the load requirements. What are you trying to accomplish? |
|
Quoted:
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. What is the 1000kw/h for? If you are charging a battery you would need to figure out the amperage based on a 12v system which chargers usually run in the 14-15v range. |
|
Quoted:
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. Tell you friend that his Hydroponic "Tomatoes" will require him to install another breaker 
|
|
Quoted:
Quoted:
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. Tell you friend that his Hydroponic "Tomatoes" will require him to install another breaker Bwahahahhh .. I think you may be on to something ! |
|
Quoted:
This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. My first question is how/why is is he trying to "make" 1000 kW-hr? There is no such thing as a kW/hr.... that's dividing a power by another time variable.... kW-hr is actually a retard unit that is really an ENERGY unit. Kinda like me telling you that I walked 120 miles per hour - second....... which would = 176 ft.  .... but I digress.
If he needs to make a power (defined as energy output or consumption over time... aka a Watt), that's a different question than if he needs to consume/make some given amount of energy (kW-hr... or a Joule... or a BTU... whatever unit floats your boat). Tell us more about what he's trying to do and the engineers here can clue you in... -ZA |
|
Quoted: I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. Simple - a watt is is a kilogram meter squared per second cubed. To achieve 1000 kilowatt hours, all you need to do is move a kilogram a meter squared per second per second per second for about a million hours. It isn't hard. |
|
Watts is the result of Volts times Current; W= Watts V=Volts I=Amps; W=V*I. You can make up 1000 Watts by 10 of one and 100 or the other or any combination, but it makes a HUGE difference how.
Here is why. Any electrical system is based upon the current capacity of the wire used. The larger the wire, the larger the current that you can run through it. When you run electricity through it, the temperature of the wire goes up, limiting how much current you can put through it, or it gets to hot and melts the insulation and burns! With that said, you want to use the lease amount of current that you can, and thus the highest voltage. You produce much less heat and the system is much more efficient. Ever seen a power line? They are very, very high voltage and low current, using the smallest wire practical. It is cheaper and much more efficient. So if you were going to use 120 VAC out a wall outlet to get 1000 watts, here is the math. 1000/120=8.333 amps. The National Electric Code (310.16) says the smallest wire you can use, and is usually available is #12 AWG. It has a capacity of 15 amps, and is very capable of the 8.333 amps needed. I hope all that makes sense. In the end, use the highest voltage you can and minimize current. |
|
Quoted:
Quoted:
Quoted:
I=EW Or amps=volts x watts Substitute at will Uhh ... no Power(watts) = Voltage - V (volts) x Current - I (amps) I = P / V I`m drinking and for the FIRST time in many centuries I`m wrong. W= I x V You sound like my wife. yadda, yadda ... I suppose you're gonna sit there in front of the computer and drink all night ! You never pay attention to ME ! 
|
|
Quoted:
Watts is the result of Volts times Current; W= Watts V=Volts I=Amps; W=V*I. You can make up 1000 Watts by 10 of one and 100 or the other or any combination, but it makes a HUGE difference how. Here is why. Any electrical system is based upon the current capacity of the wire used. The larger the wire, the larger the current that you can run through it. When you run electricity through it, the temperature of the wire goes up, limiting how much current you can put through it, or it gets to hot and melts the insulation and burns! With that said, you want to use the lease amount of current that you can, and thus the highest voltage. You produce much less heat and the system is much more efficient. Ever seen a power line? They are very, very high voltage and low current, using the smallest wire practical. It is cheaper and much more efficient. So if you were going to use 120 VAC out a wall outlet to get 1000 watts, here is the math. 1000/120=8.333 amps. The National Electric Code (310.16) says the smallest wire you can use, and is usually available is #12 AWG. It has a capacity of 15 amps, and is very capable of the 8.333 amps needed. I hope all that makes sense. In the end, use the highest voltage you can and minimize current. He said thank you for replying in a language we speak haha |
| His goal is to make a solar system that is completely off grid to power this shield he made. Claims it will prevent the government from X raying his house ( used a different term, idr) and getting info on him. It will work even after they shut off the power grids to take control. |
|
Quoted:
Quoted:
Power(watts) = Voltage - V (volts) x Current - I (amps) I = P / V yadda, yadda ... ^this P=vi you can reverse between the v and I being a greater number in theory, but does it matter for your questions how you are moving the power? However, things change a tad when discussing 3-phase power. |
|
Quoted: His goal is to make a solar system that is completely off grid to power this shield he made. Claims it will prevent the government from X raying his house ( used a different term, idr) and getting info on him. It will work even after they shut off the power grids to take control. He can just do that with tinfoil or screen for doors. I mean... what?! |
|
Quoted: This is my friends question, I don't have a lot of info on it or why he is curious but this is what I remember. He said something like: Watts is volts times amps so for example 500 watts can be achieved with 10 volts at 50 amps or 50 volts at 10 amps. So say I need to make 1000 watts, does it matter how i achieve this or is there a way to do the watts=volts(amps) backwards? I think his question was he needed to make 1000 kilowatt/hours and wanted to know the best way to do this or if there's multiple ways. Not a lot of info I know but we tried googling and couldn't find a lot on it. We know little about this field. 1000 kilowatts an hour? He's going to need one hell of a main panel. |
|
Quoted:
His goal is to make a solar system that is completely off grid to power this shield he made. Claims it will prevent the government from X raying his house ( used a different term, idr) and getting info on him. It will work even after they shut off the power grids to take control. Then he is going to need a battery bank to store the power and he will be charging a 12v system. That gives you your answer. edit: Reading comprehension fail. I skimmed your post more than I should have. His system likely runs on a 120v system then. |
|
Quoted:
His goal is to make a solar system that is completely off grid to power this shield he made. Claims it will prevent the government from X raying his house ( used a different term, idr) and getting info on him. It will work even after they shut off the power grids to take control. Ummmm. It would be more useful to make a solar powered system to power one, or more heat and/or lighting devices. 
|
|
Quoted: His goal is to make a solar system that is completely off grid to power this shield he made. Claims it will prevent the government from X raying his house ( used a different term, idr) and getting info on him. It will work even after they shut off the power grids to take control. Completely normal. |
|
No, it has something to do with solar panels to charge batteries to be used as a back up power source. He's going to contact an electrical engineer soon he just wanted to know a little bit about what he's going to be messing with first. I said 1000 kilowatt/hours as an example, I really had no clue what it meant before reading you guys' responses.
Thanks though, you all helped a lot. |
|
Quoted:
No, it has something to do with solar panels to charge batteries to be used as a back up power source. He's going to contact an electrical engineer soon he just wanted to know a little bit about what he's going to be messing with first. I said 1000 kilowatt/hours as an example, I really had no clue what it meant before reading you guys' responses. Thanks though, you all helped a lot. What is he trying to power from a DC source? DC, or AC devices? |
|
Quoted:
Watts is the result of Volts times Current; W= Watts V=Volts I=Amps; W=V*I. You can make up 1000 Watts by 10 of one and 100 or the other or any combination, but it makes a HUGE difference how. Here is why. Any electrical system is based upon the current capacity of the wire used. The larger the wire, the larger the current that you can run through it. When you run electricity through it, the temperature of the wire goes up, limiting how much current you can put through it, or it gets to hot and melts the insulation and burns! With that said, you want to use the lease amount of current that you can, and thus the highest voltage. You produce much less heat and the system is much more efficient. Ever seen a power line? They are very, very high voltage and low current, using the smallest wire practical. It is cheaper and much more efficient. So if you were going to use 120 VAC out a wall outlet to get 1000 watts, here is the math. 1000/120=8.333 amps. The National Electric Code (310.16) says the smallest wire you can use, and is usually available is #12 AWG. It has a capacity of 15 amps, and is very capable of the 8.333 amps needed. I hope all that makes sense. In the end, use the highest voltage you can and minimize current. When did they outlaw 14 gauge? And 12 used to be rated for 20 amps, WTF? |