I live in a Chicago bungalow, built in 1926. The electrical service is grounded via a water pipe. When installing a 20amp 220v outlet, there are two brass terminals and a green ground. Should the the green grounding terminal be wired to the neutral bar, or grounded to the box. If I were to use a 20 amp 110v outlet there would be a brass and a silver terminal, as well as a green ground. Why is there no neutral terminal on the 220v outlet
Thanks
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