Article 230-79 (c) (99 Code) - One Family Dwelling - For a one-family dwelling, the service disconnecting means shall have a rating of not less than 100 amperes, 3-wire.

230-79 (c) (96 code) - One Family Dwelling -For a one-family dwelling, the service disconnecting means shall have a rating of not less than 100 amperes, 3-wire under either of the following conditions: (1) where the initial computed load is 10 kVa or more, or (2) where the initial installation consists of six or more 2 wire branch circuits.

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