24v or 12v inverter & bank??

Re: 24v or 12v inverter & bank??

Anyone that runs a A/C on MSW will tell you it's not the best you can do unless you want to sleep with ear plugs. I am around 5-10 units every weekend and some are real noisy on MSW some aren't, depends on the unit.

Re: 24v or 12v inverter & bank??

Cariboocoot wrote: »

Along the MSW line, there are differences between one and another. Some are nothing but square waves. Others are much closer to sine (and sine inverter is basically very good smoothing on many square steps to achieve less than 3% THD). If the Magnum MSW specs provided are correct, its output waveform should be clean enough to run motors without any problem.

Oh how I wish they'd provide a nice scope picture of the waveform output!

Getting them to run is not the problem, it's sitting in the same room when they are running. Some fans and refrigerators sound like a freight train.

Re: 24v or 12v inverter & bank??

Photowhit wrote: »

????????What makes you think it has been discontinued???????
Lets NOT start rumors, lets show links to facts, if someone has one post it.

Perhaps I'm blind, but everywhere I look, including our host's store, this is what I'm finding. Others have told me unless there is old stock, that's it for the Xantrex Prosine 1800/12.
http://products.schneider-electric.us/products-services/products/renewable-energy/
I purchased mine from our host a few years ago.
Regardless, I hope you're right "Photowhit", and that I'm wrong. It would be a terrible shame if they were no longer being made!

Re: 24v or 12v inverter & bank??

you're not installing at your property until next spring, right? You have plenty of time to pickup your last panel, and then get the inverter in a month or whatever.

Re: 24v or 12v inverter & bank??

ywhic wrote: »

True.. but I like to gets things done and organized.. (ADHD)

if waiting is what it will take to do the 24V system, wait. It sucks, I know, but it will be worth it. I can't wait to convert my 12V system to 24V...

Re: 24v or 12v inverter & bank??

One thing about waiting is you can change your mind a few more times and you might actually have some warranty left when you get it all hooked up.

Neil, They all suffer from that........lol

Re: 24v or 12v inverter & bank??

I don't have any input on the inverters, but since I am shopping for a 24V inverter myself, I'll be watching the replies carefully.

Re: 24v or 12v inverter & bank??

Al,

let me share with you some testing I've done over the past couple of weekends in my cabin...and keep in mind it's in Minnesota, not Texas

It is a 16x12 with 8 foot walls, and a sleeping loft. Only about 15% of it is currently insulated with R-15 and Reflectix (working on that getting more done)

outside temp was approx 91F, dew point around 65. A 5000 BTU AC running on my Honda EU1000i didn't cool the building off at all, even after the sun went behind the trees and shaded the cabin. It felt nice standing directly in front of it, but that's about it. I am going to return it and go for the 6800 BTU model, and hope the EU1000i will start it.

In Texas, even well insulated, err on the side of the larger AC unit.

Re: 24v or 12v inverter & bank??

I think you're on the right track then. Look into the Reflectix insulation I mentioned above, even with just that on the south facing roof of my cabin, it made a big difference in inside temps during the day. It says on the instructions to put it on the back of the OSB/plywood roof if in the south, then insulate over top of it, and if in the north, put the insulation against the roof, then the Reflectix over top of it.

Re: 24v or 12v inverter & bank??

Dill wrote: »

...It is a 16x12 with 8 foot walls, and a sleeping loft. Only about 15% of it is currently insulated with R-15 and Reflectix (working on that getting more done)

outside temp was approx 91F, dew point around 65. A 5000 BTU AC running on my Honda EU1000i didn't cool the building off at all, even after the sun went behind the trees and shaded the cabin. It felt nice standing directly in front of it, but that's about it. I am going to return it and go for the 6800 BTU model, and hope the EU1000i will start it.

In Texas, even well insulated, err on the side of the larger AC unit.

I'll split the distance, and offer up my usual, first 1/2 insulated is NOT insulated, since it all works together, it must be finished to evaluated, you wouldn't assess a refridgerator with out a door on it?

For those of you who can, BUILD IN THE SHADE, INSULATE VERY WELL. MY 10x16 cabin with 8' walls and 13' peak inside, cools off nicely with in an hour and the 5100BTU AC set to 72 kicks off and the duty cycle is reduced to maybe 30% during our 95 degree days we've been having. I work into the evening and go to the cabin and turn on the AC about 1-3AM(I took a new time in yesterday, hope to come home to cool cabin this weekend) and run it until I go back into work about 11:30AM, it's normally close to 90 outside by then, but the AC cycles very little.

I'm in the shade and have 6" of insulation in the walls likely around R20, OSB inside(arrrgh) and T1-11 outside, faced insulation R19 I some of it has aluminum facing, some not, you can tell which when there's snow on the roof! The aluminum faced does help reflect the warm air. It really doesn't cost much more to build 6" walls, if I do it again, I may even go to 24" centers and put in steel strapping for corner tension, or do a tiled OSB wall covered with plastic siding(only thing I hate worse than OSB)

For the record, I work in a 6x10x7 4" wall, guard shack in the sun, during the week I get there at 3:30 and with the air running full blast it's 80 degrees (we do have 4 windows, and 2 fridges, and a monitor, radios, and a TV)

Also a fridge that draws 1Kw in 72 degree temps might draw 3Kw in 95 degree temps.

...and do you own this 'LCD'(I hope) LED lit? TV cause it must be pretty large, I think My 32" draws 65watts, I know it's close to 'best of class' pre LED 22" TV which claimed 45 watts, but I never could get it that low.