2. Find out what your current circuit in the kitchen can handle. In order to do this, multiply the amps by the volts. Most circuits have 120 volts. So if your circuit was 15 amps, you’d multiply 15×120. That amounts to 1800 – the total number of watts your kitchen circuit can handle. It’s a good rule of thumb to use your circuit up to 80 percent of its capacity.
3. Consider the condition of your current wiring. If you’re in an older home, you might consider rewiring the room (this is where you should contact an electrician if you don’t have experience).