Next message: Ted Brustowicz: "T&T: Re: RE: genset vs. inverter"
Steve,
If I left the impression that the batteries are routinely discharged below
50%, I'm sorry. They aren't.
I was only trying to explain my philosophy and our plans for recovering
should the batteries become discharged.
>You _need_ that generator to charge up your dead batteries, when your
>batteries shoujld _never_ be dead.
I agree but in the real world things happen and I want some way to get them
back. What would you use to charge them up?
And why would I not have a way to monitor 2-3 battery banks? Even a dozen?
Digital volt meters do a fair job. Link 10s or 20s even better and Xantrex
will sell you as many as you want. And the last I checked there is no
regulation about how many can be on one boat.
>You could then monitor it and the various loads would average out so you
>would need less total capacity.
Again I'm sorry if I didn't make it clear but that's part of the plan. I
don't want less total capacity where I have to decide how long we can watch
TV this weekend and still have the fridge stay cold. As I stated, in my
system each major item stands on its own with its own capacity. If something
goes haywire and the house bank goes away, the fridge still runs. If the
fridge's inverter smokes, the computer and TV still go on. If the start
battery gives up the ghost, switch over to put the house in the loop or jump
from the fridge bank and start the old Detroit.
And if all are dead, hopefully the genset starts and sends enough 120 to the
chargers to get something up enough to start the DD and get us back to a
dock and on the national power grid.
I like this better and am willing to pay the difference between one
2500-3000 watt inverter/charger and 3-4 200-750 watt inverters and the
batteries to power them individually. Oh and the individual chargers to
charge them.
I don't want one 3000 watt inverter/chrger hooked to a 1000 amp/hour battery
bank to go bad and ruin my whole trip. Its hard to work around a situation
when all you have is one big chain that's the total length you need and one
of its links is broken. Or it hooks. Or its swivels.
Get the idea? You either have to carry around a spare everything for one big
system or have several smaller systems whereby if one breaks you decide
which you can do without and use its components to fix the one you can't do
without.
If you think this is wrong so far, wait till you hear the next plan. The
wife wants the icemaker to run when away from shore power but without the
genset. Plan?-- 4 more GCs and another inverter. (I'm somewhat dubious of
this. Icemakers run a higher percentage of time than fridges. They are more
like freezers -- so we'll see. Maybe we'll just use it to hold ice, not try
to make ice while on the inverter.)
> For a cogent argument for this way of setting things up see Nigel Calder's
> "Boatowners Mechanical and Electrical Manual".
I haven't read it. Does he say not to do this? What reasons other than cost
and time to install? Is there an inherent danger or/and detriment to one's
health?
Thanks,
Bill
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