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Guin
06-22-2007, 02:21 PM
We currently use 20 volts and 355 amps on a continuous basis for 20 hrs. per day. My question is, can we convert volt/amps into kilowatt hours for the 20 hr. day?

Thanks,

Robert Fogt
06-22-2007, 11:34 PM
20 volts * 355 amps = 7100 watts
7100 watts / 1000 = 7.1 kilowatts
7.1 kilowatts * 20 hours = 142 kilowatt hours

Unregistered
09-27-2007, 06:05 PM
I Have A Small Comercial Unit And I Need To Convert My Amperage Total For This Unit Into Kilowatts For Our Power Company. I Dont Know How. I Have 288.75 Amps Worth Of Equipment But How Do I Get The Conversion To Kilowatts.

Unregistered
12-21-2007, 04:57 PM
We are having a problem and are wondering if anyone has any tips for us.

We live in a set of town houses. We have gas heat, so our only electric power is appliances and lights. We use low energy light bulbs.

Our question is this: why is our power bill double what our neighbor's is? We don't use very much electricity- there is only two of us who live here. There is a unit that hasn't been sold yet, so no one lives there, and that unit's bill is even more than ours!

Any tips?

gubment_cheez
12-22-2007, 03:22 PM
There is a unit that hasn't been sold yet, so no one lives there, and that unit's bill is even more than ours!question: how do you know the electric bill of a house that doesn't have an occupant? as far as I know, there is only one way; opening mail delivered to the house, which, at least where I live, is illegal as an unsanctioned violation of privacy

Robert Fogt
12-22-2007, 07:48 PM
You can always just call the power company. They are always happy (well maybe not happy) to come out and check on things, make sure nobody is syponing off your power.

I had a problem with my bill before, being 100 times higher than normal, and they came right out to check. Turns out the meter-reader guy just misentered the usage or something.

Unregistered
02-07-2008, 06:06 PM
How do you convert amp to kw?

If a 3 phase generator has 240 volt -30ampa
120 volts - 20amps
120 volts - 20amps
120 volts - 20amps receptacles.

How may kw is the generator please?

moo

Unregistered
03-21-2009, 06:02 AM
We are having a problem and are wondering if anyone has any tips for us.

We live in a set of town houses. We have gas heat, so our only electric power is appliances and lights. We use low energy light bulbs.

Our question is this: why is our power bill double what our neighbor's is? We don't use very much electricity- there is only two of us who live here. There is a unit that hasn't been sold yet, so no one lives there, and that unit's bill is even more than ours!

Any tips?
Possible the electricians who wired the place put some of your neighbor's circuits on your power box. If their refrig is running thru your meter, that could double your bill compared to theirs. Turn off your mains and then go look and see what items of your neighbors are not running. The neighbor may balk at the idea, so be diplomatic!

Unregistered
06-02-2009, 04:52 PM
How do you convert amp to kw?

If a 3 phase generator has 240 volt -30ampa
120 volts - 20amps
120 volts - 20amps
120 volts - 20amps receptacles.

How may kw is the generator please?

moo

Here is a Guide Have a Look

Converting VA to Amps (voltage fixed)

The conversion of VA to Amps is governed by the equation Amps = VA·PF/Volts)

For example 12 VA·0.6/(12 volts) = 0.6 amp

Converting KVA to KW (Kilovolt-amps to Kilowatts)

The conversion of KVA to KW is governed by the equation KVA = KW/PF)

For example, if the power factor is 0.6
120 KVA·0.6 = 72 Kilowatts

Converting Watts to KVA (watts to kilovolt-amps)

The conversion of W to KVA is governed by the equation KVA=W/(1000*PF)

For example 1500W/(1000*0.83) = 1.8 kVA (assuming a power factor of 0.83)
F
Converting Amps to VA (voltage fixed)

The conversion of Amps to VA is governed by the equation VA = Amps · Volts/PF

For example 1 amp * 110 volts/0.6 = 183 VA

Converting Amps to KVA (voltage fixed)

The conversion of Amps to KVA is governed by the equation KVA = Amps · Volts/(1000·PF)

For example 100 amp * 110 volts/(1000*0.6) = 18.3 KVA

Converting VA to Volts (current fixed)

The conversion of VA to Volts is governed by the equation Volts = VA·PF/Amps

For example 100 VA · 0.6/10 amps = 6 volts

Converting Volts to VA (current fixed)

The conversion of Volts to VA is governed by the equation VA = Amps · Volts/PF

For example 1.5 amps * 12 volts/0.6 = 30 VA

Converting Volts to Amps at fixed VA

The conversion of Volts to Amps is governed by the equation Amps = VA·PF/Volts

For example 120 VA* 0.6 /110 volts = 0.65 amps

Converting Amps to Volts at fixed VA

The conversion of Amps to Volts is governed by the equation Volts = VA·PF/Amps

For Example, 48 VA · 0.6 / 12 Amps = 2.4 Volts

Prashant singh
06-23-2009, 12:41 AM
How do you convert amp to kw?

If a 3 phase generator has 240 volt -30ampa
120 volts - 20amps
120 volts - 20amps
120 volts - 20amps receptacles.

How may kw is the generator please?

moo
120*20=2400W
2.40 KW

Rich
06-25-2009, 02:08 PM
"Originally Posted by Unregistered
How do you convert amp to kw?

If a 3 phase generator has 240 volt -30ampa
120 volts - 20amps
120 volts - 20amps
120 volts - 20amps receptacles.

How may kw is the generator please?

moo"

Doesn't sound three phase, three phase US voltage is USUALLY 208 (for those sized receptacles) giving three phases of 120Vac referenced to ground.
If it has a 240 receptacle it could be a three phased gen but you are only using two phases. Now it gets interesting because even if you do work out the KW from the info you have given (not good) then that is only two thirds of the possible power of the genset. If you rewire for true three phase (and change receptacles:) there is a whole extra third of power available.
Why not look on the data plate on the generator?
Working back from the receptacles does not tell you what the generator is capable of. You can easily have more receptacles than the gen can power simultaneously. Even if you look at the main breaker that should be sized to trip before the genset maxes out.
Look at the data plate on the gen and find truth and happiness.

Unregistered
08-02-2009, 08:14 PM
Is there anyone on here that can help me find my kilowatt hours in california? - i havent added up total volts or amps or anyhting yet. if so what do i need to know how many amps or volts or both and how many hours? thanks

JohnS
08-03-2009, 04:19 AM
Is there anyone on here that can help me find my kilowatt hours in california? - i havent added up total volts or amps or anyhting yet. if so what do i need to know how many amps or volts or both and how many hours? thanks

Well, kilowatt-hours are the product of volts, amps, and hours, divided by 1000. So you need all those.

Household voltage is generally 115-120 V and kept pretty constant by the electric company. Actually two such lines, out of phase, and a neutral are brought into your house. Heavy loads such as stoves can be connected across the two lines and operate on 230-240 V.

When it is on, each electrical load uses a certain amount of current in amperes. The nameplate on the device may tell you current or total wattage. However, this may be the peak, and devices with motors draw a high starting current, then settle to an operating current. Many devices have a thermostat so they turn on and off. They may be connected 24/7 but they are not drawing their rated load 24/7. You have to consider this duty cycle.

The power used in your house, in watts, varies all the time as loads switch on and off. However, 1000 W drawn continually for 1 hour is a kilowatt-hour. Your electric meter continuously totalizes the energy use, and the electric company sends you a bill.

If you are trying to reduce your bill, you need to look at the heavy loads and minimize their "on" time, and look at all loads that are on continuously.

Unregistered
08-04-2009, 12:38 PM
Ok got it, i havent had a chance but if i got totals of amps, watts, volts and total hours they are all running could anyone here possibly figure out my kilowatt hour? that way i can apply that to my kilowatt/hour fee from the electric company

JohnS
08-04-2009, 01:56 PM
Ok got it, i havent had a chance but if i got totals of amps, watts, volts and total hours they are all running could anyone here possibly figure out my kilowatt hour? that way i can apply that to my kilowatt/hour fee from the electric company

Frankly, that is a lot of drudgery. But post the data. We can show you how to do enough examples that you can do the rest

Unregistered
09-08-2009, 05:25 AM
I Have A Small Comercial Unit And I Need To Convert My Amperage Total For This Unit Into Kilowatts For Our Power Company. I Dont Know How. I Have 58 Amps Worth Of Equipment But How Do I Get The Conversion To Kilowatts.[/QUOTE]

Unregistered
09-24-2009, 08:40 AM
what is 4200 amp = how many kilowatt hours

Unregistered
10-08-2009, 09:10 AM
how much is 415 volt in kilo watt?pls reply now..thanks

Unregistered
10-09-2009, 11:31 AM
How do you convert amp to kw?

If a 3 phase generator has 240 volt -30ampa
120 volts - 20amps
120 volts - 20amps
120 volts - 20amps receptacles.

How may kw is the generator please?

moo

Dear friend

If the generator is of 240 volts it means 240 volts per phase and if it can supply 20 Amps per phase
per phase capacity is 240*20 = 4.8 KW

Total capacity is 4.8*3 = 14.4 Kw. It is normally mentioned it KVA because in different types of loads this power output will not be same. But the maximum KVA value can be the limit.

10-10-2009, 01:02 AM
how much is 415 volt in kilo watt?pls reply now..thanks
Depends on how many amps.

kilowatts = volts × amps ÷ 1,000

Unregistered
10-12-2009, 06:06 AM
after Converting 8 amp 12 volts for 5 days is the answer in watts or watt hrs.

JohnS
10-12-2009, 07:16 AM
after Converting 8 amp 12 volts for 5 days is the answer in watts or watt hrs.

It depends. If the load is constant, the power is 96 W. If it is drawn for 5 days, on a 24 h basis, the energy consumed is 96W x 5 days x 24 h/day = 11520 Wh.

Power is the rate of energy flow.

Unregistered
01-01-2010, 10:57 PM
thanks

I have a machine which I need to convert with a transformer.

The machine is a 20Hp motor 40Kw with lighting at 208-220volt.
What is the total amps per phase in 415volt three phase?
Thanks

Unregistered
03-03-2010, 01:43 PM
I have equipment that draws 35 Amps at 120 volts, ... operates on a 24 hour basis, ... how can I calculate my KwH consumption ?? Need to incorporate usage into a lease, ...

JohnS
03-03-2010, 03:21 PM
I have equipment that draws 35 Amps at 120 volts, ... operates on a 24 hour basis, ... how can I calculate my KwH consumption ?? Need to incorporate usage into a lease, ...

Assuming the current is in phase with the voltage (power factor = 1), the power is 35 A x 120 V = 4200 W or 4.2 kW. On a 24 hour basis, it will use 100.8 kWh per day.

Unregistered
07-05-2010, 07:10 PM
We are having a problem and are wondering if anyone has any tips for us.

We live in a set of town houses. We have gas heat, so our only electric power is appliances and lights. We use low energy light bulbs.

Our question is this: why is our power bill double what our neighbor's is? We don't use very much electricity- there is only two of us who live here. There is a unit that hasn't been sold yet, so no one lives there, and that unit's bill is even more than ours!

Any tips?

Maybe the AC constantly working. There is something in your home constantly working causing your bill to increase. You can contact your energy company and ask to install a power saver thermostat. It allows you to keep your home cool and if cool outside. The thermostat would use the outside cool air with the fan not using much of your kilowatts. hope this would work for you.

Unregistered
10-17-2010, 06:25 PM
How many KW could I be using to charge my wheelchair? I use an 8 amp 24 volt charger. Trying to figure out how much it costs to recharge my wheelchair. I also need to do the same calculation for my Home Oxygen Machine. My assisted Living Home just raised my rent \$200 because of these two appliances. I only drive my chair twice a week and for only 15 minutes per those two days.

Ed

Unregisteredwoods
11-07-2010, 12:28 PM
can anyone tell me if i take 40 12 volt batterys and connect them together that will give me 480 volts can i run a motor takes 230 to 460 and if so would i need a fuse or a braker between the motor and the batterys

heyineedhelp
01-05-2011, 09:57 PM
Can someone help me with this question? I have it as my homework and i really confused on how to slove it? where do i start?

A mircrowave oven operates on 5amps of current on a 110-volt circut for 1 hour. calculate the total kilowatt hours used. How much would it cost to run the mocrowave if the cost of energy is \$0.10 per kWh?

JohnS
01-06-2011, 03:29 AM
Can someone help me with this question? I have it as my homework and i really confused on how to slove it? where do i start?

A mircrowave oven operates on 5amps of current on a 110-volt circut for 1 hour. calculate the total kilowatt hours used. How much would it cost to run the mocrowave if the cost of energy is \$0.10 per kWh?

The product of current and voltage is power. If units are amps and volts, then power is in watts, so you will need to recognize that 1 kW = 1000 W.

Gary C
01-07-2011, 03:52 AM
can anyone tell me if i take 40 12 volt batterys and connect them together that will give me 480 volts can i run a motor takes 230 to 460 and if so would i need a fuse or a braker between the motor and the batterys

If you connect 40 12 volt batteries in series, you will have 480 volts of direct current. However, most 480 volt motors are three-phase, alternating current. If your motor is 480 volt DC (and there are a few of them out there), your batteries would power the motor for a short time.

Unregistered
11-02-2011, 12:19 AM
Here is a Guide Have a Look

Converting VA to Amps (voltage fixed)

The conversion of VA to Amps is governed by the equation Amps = VA·PF/Volts)

For example 12 VA·0.6/(12 volts) = 0.6 amp

Converting KVA to KW (Kilovolt-amps to Kilowatts)

The conversion of KVA to KW is governed by the equation KVA = KW/PF)

For example, if the power factor is 0.6
120 KVA·0.6 = 72 Kilowatts

Converting Watts to KVA (watts to kilovolt-amps)

The conversion of W to KVA is governed by the equation KVA=W/(1000*PF)

For example 1500W/(1000*0.83) = 1.8 kVA (assuming a power factor of 0.83)
F
Converting Amps to VA (voltage fixed)

The conversion of Amps to VA is governed by the equation VA = Amps · Volts/PF

For example 1 amp * 110 volts/0.6 = 183 VA

Converting Amps to KVA (voltage fixed)

The conversion of Amps to KVA is governed by the equation KVA = Amps · Volts/(1000·PF)

For example 100 amp * 110 volts/(1000*0.6) = 18.3 KVA

Converting VA to Volts (current fixed)

The conversion of VA to Volts is governed by the equation Volts = VA·PF/Amps

For example 100 VA · 0.6/10 amps = 6 volts

Converting Volts to VA (current fixed)

The conversion of Volts to VA is governed by the equation VA = Amps · Volts/PF

For example 1.5 amps * 12 volts/0.6 = 30 VA

Converting Volts to Amps at fixed VA

The conversion of Volts to Amps is governed by the equation Amps = VA·PF/Volts

For example 120 VA* 0.6 /110 volts = 0.65 amps

Converting Amps to Volts at fixed VA

The conversion of Amps to Volts is governed by the equation Volts = VA·PF/Amps

For Example, 48 VA · 0.6 / 12 Amps = 2.4 Volts

Is the power factor is constant or not?

Septiana
05-20-2012, 01:32 AM
2 Amp-hr means you can discharge at a rate of 2 amps for a maimxum of 1 hour. Or 1 amp for 2 hours, or 1/2 amp for 4 hours.Now your 2600mah are 2.6 amp-hrs each, so you need 5.2 amp-hours to charge them. Which seems like more than the 2 amp-hrs your lead-acid battery has.But amp-hrs are a strange unit, used only for batteries, for advertising reasons. The actual unit should be watt hours, which is a unit of energy. You can get watt-hours by multiplying by the battery voltage.So the lead acid battery holds 2 amp-hr x 12 = 24 watt-hrs.The AA batteries of 2.6 amp-hrs are actually 2.6 x 1.2 = 3.1 watt-hrsSo now it looks better, 24 watt-hr battery to charge 2 3.1 watt-hr batteries (total 6.2 watt-hr).And you would be fine, except for inefficiencies in the system. Specially in the charger, which may only be 50% efficient. The charge-discharge cycle of batteries is 80% at best.So we actually have 24 x .5 x .8 = 9.6 watt-hrs. But still higher than 6.2, but not by a lot. Given the uncertainties like efficiencies, I'd try it first.

Qkevin
03-22-2013, 11:58 AM
You can't, KW/h meter's don't exist.I suppose you mean a KWh meter. These mersuae the electrical energy which has passed through whereever the meter has been. You can't work out the current from that reading alone because current requires a time component, which is lost in an energy reading unless you recorded how long the meter was plugged in for.

Sakari
03-22-2013, 01:45 PM