Wiring a sub panel from meter

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I am adding electrical hot water heaters, 240 volt. Three heaters at 40 Amps each. And an electric car charger outlet, near future use. I suspect this will be too much for the current panel and am adding a sub panel.

Can the sub panel take its power directly from the house side of the meter? In case these are not the correct words, from the hot side of the main breaker in the main panel.

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bk 2020-04-10T20:09:45-04:00 3 Answers 216 views
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  1. bk
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    2020-04-11T14:58:22-04:00
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    The main panel main breaker is 200 amps.
    With three water heaters at 40 amps each, and a car charger, a future planned event but current unknown, that might be a bit much for the one 200 amp breaker. Although, the chances of all three heaters being on at one time is quite low.

    • Dominick Amorosso
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      2020-04-13T08:54:14-04:00
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      You don’t want to pull more than 80% of the breaker. So for your main panel that would be 160 amps. But what else is on it. That will more help determine what your sub-panel could be.

  2. Dominick Amorosso
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    2020-04-10T21:28:19-04:00
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    Not really. You would have to install two meters or just install a sub-panel. Really going to depend on the size of your main panel. How big is it?

    Installing a sub-panel is really always the only and best choice.