How can I figure out "nameplate amps" for a new air conditioner? The one from last year used 7.5.?
492687
Most house circuits are rated at 15 amps and the units you have found that list 115 volts, 15 amps are likely designed for such circuits.  That said, you must consider the total amps of other loads on the same circuit which may serve several other wall outlets, etc.  It is not a good idea to run other major units such as TV's or refrigerators on the same circuit serving your air conditioner.  Perhaps you can share the circuit with a clock or small lamp.  The air conditioner may draw maximum amps only during startup of the compressor (you can hear it groan).  If the circuit trips, shed other loads.  Avoid using extension chords for the air conditioner (even heavy duty chords increase voltage drop at the plugs).  One neighbor discovered that his house voltage was often lower than it should be and the power company added a booster for him.  Low voltage draws more current (amps).  A qualified electrician may be able to upgrade your circuit to 20 amps, depending on the house wiring, to avoid trips.  Good luck.
561818
Just be sure that you are not overloading the UPS. Check the rating on it!
408219
First determine size of AC needed for the room based on room size and occupants. If the room is expected to have several people, a meeting room for example a larger BTU capacity maybe needed.\n\nThe manufacturer of the AC will have the Power (watts) and Current (amps) for the given line voltage.\nKeep in mind that a larger AC unit may require 220VAC vs the typical 120VAC.\n\nThe power is the same for both, but the Current is about half for the 220VAC unit vs the 120VAC unit. The 220VAC unit is more reliable. But not all rooms have the 220VAC service, which could require a new branch circuit to be installed.\n\n1000 BTU/h is approximately 293 Watts\n \nFor BTU to Electric conversion check out the following link:
188071
Correction to Ra.Ge's answer. 220 vac is the rms value; the peak is sqrt(2) * 220. (See ref.) But the power factor information is correct. Assuming the guess of a 0.9 PF is good, the power is 7920 watts and the total consumption is 6083 Kwh. I hope this beast isn't really drawing that power all the time. If you have the fan set to continuous running, the compressor might be running only intermittently which brings down the net consumption.
1186419
That would depend on the voltage. Current = Watts / Volts\nA couple of examples:\n110V - 90.9 Amps\n220V - 45.45 Amps\n240V - 41.67 Amps\n440V - 22.7 Amps\n10,000V - 1 Amp
209317
The straight calculation is this:\nVolts X Amps = Watts(power)\n\n4.5 watts would be the answer.
199156
In this answer I am going to refer you to an online calculator. The power company is simply trying to get an idea of your power requirements to establish a transformer and feeder size for your home. I will also tell you in this article va is the same as wattage. You will need to know the square footage of the home , whether you have gas or electric range and dryer , small appliance and laundry circuits are a given in all homes. 2-small appliance and 1 laundry . Also needed air conditioning load if applicable , or heat pump if applicable etc. If you have a copy of the National Electrical code available to you there is a sample house load section for single family dwellings that will  be helpful. But I truly feel for your purposes the following site will give you everything with a simple fill in the blanks format. If you have any questions Ill be happy to help. Ok heres the url for the calculator.  http://www.electricalknowledge.com/SFDLoadCalc.asp
745468
Easy!\nIf the input is the same(1.1kW) it depends on their performance.
1038968
What voltage dc, or do you need to be able to vary it?  What current capacity do you need?  What ripple voltage is acceptable?
499954
Please use the name plate and find current at the voltage used or kva.  the NEC 2005 has a three phase 220 volt motor at 96 amps also you need to rate the motor a 125% so you need #3 copper wire rated at 125 amps (THHN) DO NOT USE A CIRCUIT BREAKER LARGER THAN 125 AMPS. YOU ALSO NEED A MOTOR OVERLOAD RATED 96AMP.  IN THE CONTACTOR RATED NEMA CLASS 2
89341
Just buy the plugpack.\n\nIf you want more amps, or variable volts, be specific.
996021
A few suggestions.  Check the website of the who made the air unit you have and see if their site has the info you need.  Check also this website --> http://home.howstuffworks.com/ac.htm  for a wealth of information that the web has.
166925
http://www.lmperformance.com/5807/12.html
865571
That should be a $450 -$550 amp new.  You should be able to get $250 - $300 since it is clean and hardly used.
469560
you need to find one that gives u enough of the voltage and ampage, as most of the universal ones, do set them selfs to what your laptop needs, and are generally cheaper than the manufactures ones (you just need to know if your laptop falls in the range of what it can supply.\n\n\nif you want manufacture adaptors you could look here for toshiba adaptors http://www.portables.co.uk/acatalog/Toshiba_ac_adapters.html
57870
You would want at least 50,000 BTU, Hope this will answer your question. I had an 1800 sq. ft. home once so I know. It costed me $5,000.00 installed with A/C and ducts.
448724
On nearly every appliance, there is a label, usually somewhere near where the AC cord enters the body of the appliance, or on the bottom, which states the electrical draw of the appliance.  If it is not listed in watts, then it will be listed in 'AMPS' or just 'A'.  To determine the wattage of an appliance if it gives you the draw in amps, you just need to do some simple math.  (amps) * (line voltage) = (watts).  So, if an appliance says that it draws 3 amps, and it is plugged into a standard north american outlet, which is 120 volts, then 3 * 120 = 360 watts.  If it is a 240v appliance, and draws 3 amps, then 3 * 240 = 720 watts.\n\nHope this helps...