That is called 4 way intermediate switch wiring. Click the link to watch a video I have posted showing how to wire just such a circuit.
120 15 amp service ? 210 7 amp service ?
I assume you are talking about a standard, 120 volt, residential lamppost that uses (all 5) 120 volt bulbs and not something else. If this is true, and you have five lamp sockets in the same fixture, then notice that every lamp socket has a white and a black wire. In order to get the 120 volts to each bulb, the lamp sockets MUST be wired in PARALLEL. You will tie ALL 5 white wires together with the white (neutral) power source wire with a wire nut of correct size. Then do the same with the 5 black wires and the black (hot) power source wire. Make sure to shut off your source wires at the circuit breaker or fuse panel before you start, and double- check the circuit for voltage with an appropriate tester before you start. Always think safety! I hop
Wire is sized by the amperage that it will carry. 5 kW is 5000 watts. The equation to find watts is W = Amps x Volts. The equation to find amps is Amps = Watts/Volts. As you can see a voltage is needed to calculate the amperage. Once the amperage is stated, the wire size can be given for that particular amperage.
The resistance of the circuit will be 46 ohms
1/5 x 1100 = 220
1/5 of $1100 = $220
2 1/5= 2.20 2 1/5= 11/2 2 1/5= 220%
30 amp breaker 10 /2 gauge wire
5% of 220 is 11. 11 goes into 220 twenty times.
LCM(11, 4, 5) = 220.
5% of 220 is 11
220 % = 220/100 = 11/5 = 21/5
A fifth of 5 = 5/5 = 1
220% = 220/100 = 11/5
220 = 2^2 x 5 x 11 2 x 2 x 5 x 11 = 220
1100 ÷ 5 = 220