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You will need to run 2 separate high voltage lines to that system (or one large one that splits in a 2 breaker outdoor box at the unit). The 30 amp rating is the unit without a heat kit. With the 10 kw kit installed, the minimum breaker sizes (remember, you will need 2 lines) are 45 amp and 52 amp, and the maximum is two 60 amp breakers.