Nubby Tubbs
New Member
if not, then what are the advantages of 240...besides being able to plug more in?
is 240v half price of 120v?
- Thread starter Nubby Tubbs
- Start date
sonar
Well-Known Member
No, that is a myth.
The advantage is LESS amps since watts=volts x amps. If the voltage is higher, then less current (amps) are required to get the same wattage. The only advantage is that since there are less amps, the wire feeding the circuit can be smaller gauge. Wire is expensive, so if you are running a new circuit 100 ft away from your panel box, the upfront cost is a little cheaper.
For example, if you have a 1000w light on 120v, then it will draw 8.3 amps (8.3x120=1000w)
If you run that same lamp on 220v, then it only draws 4.2 amps, so theoretically you could run smaller wire. In reality, it would be the same size wire unless there were more devices on that same circuit since the smallest circuit size for a home is 15 amp, which you are well within burning only the 1000w bulb. Now, if we are talking SEVERAL 1000w bulbs, there might be an instance when you can save on wire by running 220v.
The advantage is LESS amps since watts=volts x amps. If the voltage is higher, then less current (amps) are required to get the same wattage. The only advantage is that since there are less amps, the wire feeding the circuit can be smaller gauge. Wire is expensive, so if you are running a new circuit 100 ft away from your panel box, the upfront cost is a little cheaper.
For example, if you have a 1000w light on 120v, then it will draw 8.3 amps (8.3x120=1000w)
If you run that same lamp on 220v, then it only draws 4.2 amps, so theoretically you could run smaller wire. In reality, it would be the same size wire unless there were more devices on that same circuit since the smallest circuit size for a home is 15 amp, which you are well within burning only the 1000w bulb. Now, if we are talking SEVERAL 1000w bulbs, there might be an instance when you can save on wire by running 220v.
golddog
Well-Known Member
You pay by the kilowatt. Kilowatts are the same 120v Amps or 240 v Amps.
There are some efficiencies, but what you pay for electricity is the same.
The Knuck
Active Member
You pay by the kilowatt. Kilowatts are the same 120v Amps or 240 v Amps.
There are some efficiencies, but what you pay for electricity is the same.
yeah i know this, i was saying i thought 240 provided more amps,
golddog
Well-Known Member
What is your point then?
What do you want to know?
Google "Basic Electricity" I bet you'll find plenty of information.
Good Luck
5tealthman
Member
stealthman got it spot on!
5tealthman
Member
sorry, its l8 here lol. meant to say sonar has got it spot on!
golddog
Well-Known Member
The Knuck
Active Member
What is your point then?
What do you want to know?
Google "Basic Electricity" I bet you'll find plenty of information.
Good Luck
i dont know what your point is i am not the OP you know that right,
i dont get why you quoted me your reply has nothing to do with what i posted i dont know what your talking about.
sonar
Well-Known Member
It depends on the appliance. Some will use a 3 prong outlet, which needs 3 wires (black, white, bare) and some will use 4 prong (black, red, white, bare). I'd have to really check into the price of romex cable to compare, but I think the important thing is that you won't save on electricity by using 220v over 110v. It still uses the same amount of watts.
golddog
Well-Known Member
I meant 2 hot wires and a ground. That's what you'll see in the Romex.
P.S. - Out to the spa. C' ya
sonar
Well-Known Member
I meant 2 hot wires and a ground. That's what you'll see in the Romex.
P.S. - Out to the spa. C' ya
Yup, 2 hot wires. Sorry I should have known that's what you meant.