You will need
  • tester;
  • calculator;
  • - technical documentation for appliances.
If you want to put the amps in other units of measurement of power (a decimal fraction or a multiple), then just multiply the number of amperes by that factor. For example, to convert amperes to milliamperes, multiply number amperes by 1000 and the transfer of amp to kiloampere – multiply by 0.001. Accordingly, the translation ampere megaampere multiply the amperage at 0,000001 and transfer in microamperes – multiply by 1000000. The rest-fraction and multiple units of measure current in everyday life and in solving standard tasks are not used.
To estimate the maximum total power of electrical consumers which are able to withstand your power grid, multiply the current (in amperes), which is designed for a fuse on the line voltage (220 volts). The resulting value will be equal to the power capability of simultaneously connected electrical appliance expressed in watts. So (purely practical) amps can be converted to watts.
Similarly, we can calculate the maximum capacity of the electrical equipment when it is connected to Autonomous power sources. As a rule, accumulators and batteries specified voltage and maximum current for which designed power source. When you connect a too-powerful consumer, the power source could fail or even ignite.
To determine the power consumption will study the technical documentation of electrostrictive or look for information on the appliance. The electrical power specified in watts (W, W), kilowatts (kW, kW), or milliwatts (mW, mW).
Household electrical network is designed for a maximum current of 20 amps.

Stavatti how many light bulbs you can turn on at the same time?

1. Rate the maximum load power mains: 20(A) * 220(V) = 4400 (W).
2. Divide the total allowable power network to power one light bulb: 4400 (W) / 100 (watt) = 44 (units).

At the same time you can connect a light bulb 44.