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post #3 of Old 09-29-2012
Breaking wind
Join Date: Sep 2012
Location: san francisco
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Not a problem. The shore power will only allow a 20amp overload. Since you have a 30amp main theshore power breaker will trip first and your 30amp main can withstand any overload. If it were reversed the would be a problem. 30amp shore with 20amp main....bad
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