1 Big and 1 Small Inverter

[Wxboy]

Thinking this through a little more...if the fridge was running and you had a few other small loads running and then the AC compressor tried to kick on that could overload the inverter. It all depends on what the start-up surge is on the AC but if it's between 2,500 and 2,800 watts then you don't have much headroom. It's not something I would worry about right now but it will be interesting to see how things go in your real world testing.

I still think if you need a second inverter that another Prowatt 2000 would be a good choice. And again I choose that because for the money I think it's worth having the extra capacity over the 1000. I originally wanted a Prowatt 1000 but my dad picked me up the 2000 and I'm glad he did. Not that I can run 1800 watts continuously with my small setup but having the extra surge rating is nice.

[waynefromnscanada]

I still think if you need a second inverter that another Prowatt 2000 would be a good choice. And again I choose that because for the money I think it's worth having the extra capacity over the 1000. I originally wanted a Prowatt 1000 but my dad picked me up the 2000 and I'm glad he did. Not that I can run 1800 watts continuously with my small setup but having the extra surge rating is nice.

And what is the difference in self consumption just to run the two inverters? Perhaps there is little difference, I don't know myself, but generally the more powerful the inverter, the heavier it's self consumption. Something to consider if you have limited power sources, and why many of us run a little MS 300 for all but the large loads.

[ywhic]

@ wayne..

The 1000w is rated at 0.6 amp no-load, and the 2000w is rated at 0.8 amp no-load.. though in real testing 2manytoys shows 0.3 amp in no-load on the 2000w model..

[erne]

I used a chest freezer and had the same dislikes (hunting and digging) I switched to a upright freezer and my consumption increased from 200 watt/hrs. per day to 300. It is worth the extra 100 watt/hrs and still 700 watt/hrs better than any refrigerator on the market. also remember if you have any 2 way switches on a single inverter you can overload the neutral and create a fire hazard.

[ywhic]

I used a chest freezer and had the same dislikes (hunting and digging) I switched to a upright freezer and my consumption increased from 200 watt/hrs. per day to 300. It is worth the extra 100 watt/hrs and still 700 watt/hrs better than any refrigerator on the market. also remember if you have any 2 way switches on a single inverter you can overload the neutral and create a fire hazard.

What type/make/model of upright???

300w beats 900-1000w per day anytime..

Does that overload also occur if you do neutral/ground bonding on the feed panel??

[erne]

The freezer is a Kenmore 12 cubic foot. the External thermostat is a Johnson controls thermostat with a built in plug wire plug that goes into the wall and the freezer plugs into the plug that just controls the hot wire. That way there is no change to the freezer or the warranty. My warranty left long ago though. For the two way or three way switch what happens is one switch is on one circuit while the other is on the other, thus allowing both sides to be run on a single unfused neutral. The amperage can double without tripping a breaker and the neutral can heat due to the overload of both circuits returning on a single wire.

[ywhic]

The freezer is a Kenmore 12 cubic foot. the External thermostat is a Johnson controls thermostat with a built in plug wire plug that goes into the wall and the freezer plugs into the plug that just controls the hot wire. That way there is no change to the freezer or the warranty. My warranty left long ago though. For the two way or three way switch what happens is one switch is on one circuit while the other is on the other, thus allowing both sides to be run on a single unfused neutral. The amperage can double without tripping a breaker and the neutral can heat due to the overload of both circuits returning on a single wire.

Is that like the Johnson Controls KEG type?? Manually set a temp and the unit shuts down the KEG freezer??

[ywhic]

Would a neutral/ground bond in the sub-panel the inverter is hooked to eliminate the neutral overload condition???

(I made a new thread for this topic under the WIRING section)..

[ywhic]

erne.. Your reply got deleted, lost, or something..

If the switches are wired independent you can’t shut down from one switch to the other, they can be wired safely but they are built to run on two separate legs which you don’t have if you jumper the inverter so both sides are being used by the same 110 inverter circuit. A T-240 or two inverters in classic setting (180 degrees out of phase) is what is needed.

I don't plan on crossing the inverters at any point.. 2 separate inverters.. Each inverter powering different ends of the cabin.. the ceiling fan would be on a straight run of outlets with 12/3 wire.. and then 2 independant switches with 12/4 wire as a jumper between the two for just the ceiling fan..

I still don't see how a single inverter can cause and issue using switches..

The other post about the switches is http://www.wind-sun.com/ForumVB/show...ossible-issues

[erne]

I don’t know what KEG is but all it does is shut off the electricity to the freezer. There is a temperature sensor that goes into the freezer that tells the Johnson control thermostat when to come on or off.