Re: [Amel Yacht Owners] Re: Distributed vs. Conventional Electrical Systems
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Bill K: I agree that it is a mostly theoretical concern, but you know the difference between theory and practice, right? :D My own knowledge and sources that I trust lead me to err on the side of the simpler system, even if it is harder to source the correct fuses.
Regarding the bow thruster power: I think we have to take everything in that table with a grain of salt because none of the wattages match up with the amperages. I think they're trying to convey something other than a strict electrical relationship between those numbers. I wonder if the 510A value might be the inrush current, and the 7kW the continuous power? I agree with James that "Amperage on load" probably means "under load", but implies the "amperage" column is no-load, so why aren't more of the values in the "on load" column? The bow thruster is in essence always under load. Another possibility is the thruster input power is ~9180W (510A * 18V), the output is 7000W, and thus the efficiency is a paltry 76%. Does anyone have a clamp-on ammeter that would be willing to do some science (I don't trust the battery monitor to react quickly enough to get a reliable inrush current measurement)?
SM 233 Iteration
Boston, MA, USA
On Wed, Oct 18, 2017 at 4:38 PM, James Alton lokiyawl2@... [amelyachtowners] <amelyachtowners@...> wrote: