running a/c on inverter

[David Brady]

Hi Bill,



No I'm not sure, but my gut feel is that the generator is more

efficient. I'll have to look more deeply to see if I can come up w/

numbers. I have one 300 amp alternator on my Series-60. Typically

alternators are 50% efficient. When generating electricity you're

better off generating high voltage and low current, which is what

you'll do with the generator, and not do with the alternator.

Add into this the losses at the inverter. This gives me the feeling that

the genny will offer more economy. But I might be wrong...



David Brady

'02 LXi, NC



Wilhelmus Schreurs wrote:

David:

Are you sure that running your big generator is more efficient
to run onea/c, from the standpoint of burning fuel to the output of
thea/c?

With your engines you have two alternators, so each one would
put out 50 percent only and then have 50 percent left over for other
items.

Bill 84 FC 35 SB "$quanderlodge"

Terrace, B.C. Canada

-----
Original Message ----

From: David Brady net>

To: WanderlodgeForum@yahoogroups.com

Sent: Tuesday, July 1, 2008 8:25:03 PM

Subject: Re: [WanderlodgeForum] running a/c on inverter

My LXi is set up to run one AC off an inverter and the alternator,
but

conventional wisdom is that you shouldn't do it. Steadystate current

draw from the alternator is 150Amps. I want to preserve my precious

alternator, so I always run the generator when I need my AC's.

Another point of view to consider the inefficiencies of the alternator

in generating DC and to add on to that the inefficiency of the inverter

to convert to AC to run the air conditioning. The generator is more

efficient at generating the needed AC.



David Brady

'02 LXi, NC



coreyg67 wrote:

I'm trying to figure out a way to run 1 of my A/C units on the
inverters and alternator. I

would think with the two 2500 watt inverters, and the 300amp
alternator, this would be a

doable venture. Can someone tell me if, and how to do this task?



Thanks

Corey & Jenni

1996 PT42'

Prosper, TX

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