If it is just a 60Hz one, for 120V, pins 1 and 2 together to Active, pins 3 and 4 to Neutral. For 240V, Active to pin 1, connect 2 and 3 together, Neutral to pin 4. At lest that is what I would try. I'm only planning on having standard 15 & 20 amp 120v circuits/outlets connected to the new sub panel, and nothing that would require 240v. Have I overlooked or mistaken anything with either the 240v or 120v solutions? Thank you, in advance, for your advice to keep me from doing anything unsafe! You may not be able to find a 220 to 110 adapter. Instead, you may find a 240 to 120 one or even a 250 to 125. Don't worry. Any of them will work. Electrical manufacturers and electricians use the different numbers because the standard voltage coming into residential panels from the power lines can vary. Pros and Cons. Has a metal casing for durability. Comes with spare fuses in case the current one experiences overcurrent damage. Has step-up and step down functions, so you can convert up to 220 volts or down to 110 volts. Can take up a lot of room in your suitcase. If you had a 4-prong, 220 volt AC outlet, the fourth wire would be neutral, and can carry current. A 4-prong 220 AC outlet can be converted to 110 volts AC using 3 of the 4 wires. If you have 4 wires going to the box holding the outlet, you can convert to a 4-prong outlet easily. If not, you’ll need to rewire the outlet to your electrical panel. Toggle water heater between 120V and 240V using 3-Way Switch. To switch the circuit between 120V and 240V for water heater by using a 30 amperes 3-way switch, just connect a line (L1) from main distribution board via 30A circuit breaker to the water heater. Connect the second line (L2) from CB and neutral from DB to the upper terminal and lower Current (Amps): 200A. Voltage Volts): 240V. Maximum 1 Phase Power per Phase = 200 x 240. 48,000 Volt Amps (VA) per Phase or. 48 Kilowatts (KW) per Phase. Maximum 3 Phase Power = 200 x 415 x 1.732. 144 KVA Kilovolt Amps or. 144 KW Kilowatts. 240V power is used in the US and parts of the world. The block has 9 entry points. As it`s wired in mine for 240v i have 1=yellow 2=orange 3=n/c 4=blue 5=black 6=n/c 7=red 8=n/c 9=white. Black Red and White remain constant in 5,7,and 9 regardless of what voltage you want, only yellow ,orange and blue get moved around for the different voltages. If you have a 1000W electrical appliance connected to a 240V circuit, it will be drawing 4.17 amps. 1000W ÷ 240V = 4.17A. How many amps is 1500 watts at 120 volts? If you have a 1500W electrical appliance on a 120V circuit, it will be drawing 12.5 amps. 1500W ÷ 120V = 12.5A. The main difference between 120V wiring and 240V wiring is that 120V wiring is connected to 120V power and 240V wiring is connected to 240V power. In the USA they have a mixed 120V/240V system which is why you can wire up a 240V outlet or a 120V outlet. However, in Europe there is only 240V (or 230V - whatever, close enough). HYzqqzf.