Hello
I know from an ac generator on one half turn of the coil one of the wires from the generator will be posistive and the other negative and on the other half it will swap and the negative wire becmomes positve and the other negative.
I therefor can't understand how alternating current in our homes works as for example in a plug one wire is positve and other negative and a third wire which is ground. How is it then that the voltage alternates from +240 to -240 in the same wire while the negative wire stays at zero? why does it not alternate between both wires i.e one is +240 and other 0 then 0 goes to +240 and 240 to 0?
Can someone explain this. Thank you for any replies.
I know from an ac generator on one half turn of the coil one of the wires from the generator will be posistive and the other negative and on the other half it will swap and the negative wire becmomes positve and the other negative.
I therefor can't understand how alternating current in our homes works as for example in a plug one wire is positve and other negative and a third wire which is ground. How is it then that the voltage alternates from +240 to -240 in the same wire while the negative wire stays at zero? why does it not alternate between both wires i.e one is +240 and other 0 then 0 goes to +240 and 240 to 0?
Can someone explain this. Thank you for any replies.
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