How's Ya Balance?

[Barboots]

Aside from the start-up current draw... which I don't recall seeing quoted for my aircon... those consumption figures are lower. I haven't looked it up to confirm, but I recall working on 5.6A?

The start-up figure quoted is certainly eye watering Vic, but 150 milliseconds is a blip in time. However if there is an issue, a decent fridgie might be able to hook you up with an additional or upgraded start capacitor to assist. I had information on this approach on standby if there were problems, but fortunately it's all worked out. There's a lot of info on start caps in the US, probably because their 110Vac distribution is so lame. I'd say leave the research though... in my case it was a waste of time and worry.

Cheers,
Steve

[Vik351]

"I'd say leave the research though... in my case it was a waste of time and worry. " TERRY...??? WTF...???

Huz fault...!!! got the thing on 240 at the mo on two (3speed)and its in full sun at 42 deg as we speak and cold air is pumpin out of it and the Avida panel says 35 inside.

Ya could fry an egg on the Espie I'm sure, but inside with the wind chill factor,35 to us Croweaters is nuffin, so if the AC worked like that on Litho out in the sticks, I would be like a pig in...

vik... a pig indeed..!!! Mr solar...

[Barboots]

Vik I just meant to leave researching start capacitor modifications until you find the start-up current draw a problem. It's probable that the inverter will cop it sweet due to the short duration.

So dunworryaboudit. [emoji6]

[T1 Terry]

So one would take it you are as happy as a pig in ... siht...!!! [emoji38] [emoji14]

how much juice does the AC pinch...???

Terry has already answered pretty much everything, and was about 1% out with his estimation of state-of-charge. None too shabby for an amateur. [emoji6]

In my 12V system the Aircommand Cormorant pulls about 80A total when cooling, and about 12A when the compressor has cycled out. The "on" figure goes up a few amps with temperature differential... maybe to 85A or so. This is with the losses incurred via the BitDeals inverter, which I recall as the 3000/9000 model. It's the one Terry put me on to anyway, so you're probably looking at similar???

What AC are you going to be using?

Cheers, Steve

Thanks Steve..
Truma...Aventa Comfort

https://www.truma.com/int/en/products/t ... mfort.html

4.2 A and heat 3.7 A ... But that wont be used as I have the diesel heater

Start up 28 A (150 MS) WTH is 150 ms...??? milli seconds, sounds like it's gunna be a mung to start

But ,beats me ...I just own the thing...

vik...

The start up current is something the inverter must be able to supply for the length of time it is required, the light weight inverters say they have a 100% over load capacity but that is for less than 150ms, so it really is meaningless. The heavy weight units with a big transformer in them can carry the 100% over load for minutes rather than 2ms, this means one of these inverters will handle the start up load without tripping out, the light weight ones will not carry the overload for long enough and trip out.

In easy to understand speak, 28 amps x 240v = 6720w, so a light weight inverter would need to be rated at 7,000w to be sure it would start up the air con every time, a heavy weight unit like the W7 has a 200% short term over load capacity so the same 7,000 divided by 3 = 2400w as a min capacity required to start the same unit. Units such as the Projecta IP2000 have a very high short term over load capability and these will start and run these type of air con units where a Honda 2.0 generator won't unless they have the "soft start" modification.
Just as reference note, the inverter type air con units are all soft start, but be warned, they will ramp up to full run current (not start up current) if set on max while they are pulling the temp and humidity levels down, then they go into the inverter mode. So, don't be fooled by the "average" run current, the inverter must be able to coupe with the full run current.

T1 Terry

[Vik351]

So I'm lookin pretty good then if we go your way...!!!

vik...