Written The ratings that you say are in different aspects. A 2KW AC means that it consumes 2KWH or 2000Watthour or 2units of electricity in an hour. The 1KW rating in the meter is that there is a point after each KWh. That is 2KWH or 2000Wh or 2units of electricity consumption is written as 2.000 or there is a point after the smallest kw unit.Also 75.5KWH or 75500Wh or 75.5units of electricity consumption is written as 2.000.Also you will never burn the meter whatever happens as there is a fuse or an MCB before it for protection. It is rated at 30A for homes while for industries it is bigger. And your AC of 2000Watt will at 220V rating will take about 9.1A of current each second. Thus you can use upto 3 such AC's without problem.But i want to tell that your AC isn't efficient even 1KW isn't efficient. You will be having a current bill of 20,000 per month soon(Not sure it will depend on the time you use it my neighbour uses a 1KW AC and gets Rs15000 per month. Probably more based on usage.

Also below is the power consumption of items in your house.Fan-60-80WattsAC-750-2000wattsIron-1000-2000wattsMotor-1000-5000watts(sometimes even more)TV(LED)-10-20wattsCRT TV-100-200wattsComputer (incl LED monitor)-100watts.Written You will not burn the meter, nor will you have a short circuit.The latest electronic meter is equipped with the technology that reads your power usage at any time.Now if you impose an AC that is say 2kw it will draw 2 units per hour.heat pump unit 43But as per your load is sanctioned to be 1 kW, you will definitely ace problem.ge small ac unitSince you draw access current from your meter, the MCB can trip.gas fired air handling unitThis higher consumption will automatically be recorded in the meter and will raise a very very high monthly penalty for you from the electrical department.

Taking the most adverse ccondition that you install that AC.In order to run it you will have to shut down every single load of your house. But still penalty will be surely there.Written Rating of an energy meter ( electromagnetic type) is interns of maximum current and voltage and its meter constant in xxx revolution /unit.Still if you say it is 1 kW then current rating is about 5 ANow if you connect a load of 2 kW then the MCB should trip or the fuse should blow off. If these things don’t happen then the meter current coil may be burnt out. The nominal power is the nameplate capacity of photovoltaic (PV) devices, such as solar cells, panels and systems, and is determined by measuring the electric current and voltage in a circuit, while varying the resistance under precisely defined conditions. These Standard Test Conditions (STC) are specified in standards such as IEC 61215, IEC 61646 and UL 1703; specifically the light intensity is 1000 W/m2, with a spectrum similar to sunlight hitting the earth's surface at latitude 35°N in the summer (airmass 1.5), the temperature of the cells being 25 °C.

The power is measured while varying the resistive load on the module between an open and closed circuit (between maximum and minimum resistance). The highest power thus measured is the 'nominal' power of the module in watts. This nominal power divided by the light power that falls on a given area of a photovoltaic device (area × 1000 W/m2) defines its efficiency, the ratio of the device's electrical output to the incident energy. The nominal and potentially maximum power is important to the technician planning an installation in order to choose correctly the size of alternating-current converters and the cross-sectional area of the connecting wires. It is not a good measure with which to compare solar modules and prices. The output in kWh per m2 is much better suited. The peak power is not the same as the power under actual radiation conditions. In practice, this will be approximately 15-20% lower due to the considerable heating of the solar cells. The international System of Units does not permit the use of suffixes or additional symbols.

Despite this rule, in colloquial language, instead of stating "the nominal power of the module is one kilowatt", it is stated "the module has one kilowatt-peak". The terms watt-peak (Wp), kilowatt-peak (kWp)and megawatt-peak (MWp) are also used. In the context of domestic PV installations, kWp is the most common unit encountered. The output of photovoltaic systems varies with the intensity of sunshine and other conditions. The more sun, the more power the PV module will generate. Losses, compared to performance in optimal conditions, will occur due to non-ideal alignment of the module in tilt and/or azimuth, higher temperature, module power mismatch (since panels in a system are connected in series the lowest performing module defines performance of the string it belongs to), soiling and DC to AC conversion. The power a module generates in real conditions can exceed the nominal power when the intensity of sunlight exceeds 1000 W/m2 (which corresponds roughly to midday in summer in, for example, Germany), or when sun irradiation close to 1000 W/m2 happens at lower temperatures.

Most countries refer to installed nominal nameplate capacity of PV systems and panels by counting DC power in watt-peak, denoted as Wp,[4] or sometimes WDC, as do most manufacturers and organizations of the photovoltaic industry, such as SEIA, SPE or the IEA-PVPS. However, in some places of the world, a system's rated capacity is given after the power output has been converted to AC. These places include Canada, Japan (since 2012), Spain, and some parts of the United States. AC instead of DC is also given for most utility-scale PV power plants using CdTe-technology. The major difference lies in the small percentage (about 5%, according to the IEA-PVPS) of energy lost during the DC-AC conversion. In addition, some grid regulations may limit the output of a PV system to as little as 70% of its nominal DC power (Germany). In such cases, the difference between nominal peak-power and converted AC output can therefore amount to as much as 30%. Because of these two different metrics, international organizations need to reconvert official domestic figures from the above mentioned countries back to the raw DC output, in order to report coherent global PV-deployment in watt-peak.

In order to clarify whether the nominal power output ("watt-peak", Wp) is in fact DC or already converted into AC, it is sometimes explicitly denoted as, for example, MWDC and MWAC or kWDC and kWAC. The converted WAC is also often written as "MW (AC)", "MWac" or "MWAC". Just as for Wp, these units are non SI-compliant but widely used. In California, for example, where the rated capacity is given in MWAC, a loss of 15 percent in the conversion from DC to AC is assumed.[6] This can be extremely confusing not only to non-experts, as the conversion efficiency has been improving to nearly 98 percent,[7] grid regulations may change, some manufactures may differ from the rest of the industry, and countries, such as Japan, may adopt a different metric from one year to the other. Although watt-peak is a convenient measure, and is the standardized number in the photovoltaic industry on which prices, sales and growth numbers are based, it is arguably not the most important number for actual performance.

Since a solar panel's job is to generate electric power at minimal cost, the amount of power that it generates under real-life conditions in relation to its cost should be the most important number to evaluate. This "cost-per-watt" measure is widely used in the industry. It can happen that a panel from brand A and a panel of brand B give exactly the same watt-peak in laboratory test, but their power output is different in a real installation. This difference can be caused by different degradation rates at higher temperatures. At the same time, though brand A can be less productive than brand B it may as well cost less, thus it has a potential of becoming financially advantageous. An alternative scenario can also be true: a more expensive panel may produce so much more power that it will outperform a cheaper panel financially. An accurate analysis of long-term performance versus cost, both initial and on-going, is required to determine which panel may lead the owner to better financial results.