My old fresh water pump bit the dust two years ago and I asked the marine store to get me a replacement. Don't remember what I had on the boat but they gave me a JASCO PAR-MAX 4.0GPM "washdown pump". Said that was fine to use as a replacement. This pump says it's 15 AMPS at 60 PSI and then the label says FUSE: 20A Required (not included). This pump keeps tripping the breaker if running the shower or sink for more than 30 seconds-unless you barely have the water on. I suspect that 1) it's drawing too much power from the breaker and 2) they should have given me a "freshwater pump" and not a washdown pump and 3) never asked what the breaker rating was just the GPM - to be sure the breaker would hold. Any help identifying the breaker size would be appreciated. I looked in my manuals but can't see the breaker rating for the freshwater pump in my documents and I just don't remember what pump rating I had in there.