Thoughts on Sungold Power 6548

[ToddG]

I have a 50a motorhome with 2 AC's. I do not have a transfer switch and have to manually plug my shore cord into an outlet under the coach to use the generator. The Sungold Power SGH6548P looks like the ideal solution for my power upgrade. I would be running it in 120v only to use my 5500w generator. I will also install enough panels to get over 150v input.

Since this AIO has a transfer switch built in, it would ease the wiring issues. I would have to make sure to use only a 120v shore connection. Can I still use the 50a cord and only use one of the 50a legs?

Has anyone else used this or a similar SRNE inverter?

 

[chrisski]

I have not, but if you look at my signature block I have a fairly big RV build, and IMO, anything above a running a single 15k BTU AC with a 3 kW inverter is too much.

I am also in AZ and have to fill my roof up with solar, and then put just as much on the ground to power a single AC at 1700 watts, with a total RV draw of ~2000 watts. Any more power is just not practical unless I get a trailer of ground mounted panels. I also have a 200 LBS 13 kWh battery, so its not getting much bigger than that because of weight constraints.

My question to you, is with this set up you're suggesting, would you still be able to use the solar with the generator or grid power to fill the shortfall you'll have from solar? My RV setup will not, but my home setup will.

 

[ToddG]

I have not, but if you look at my signature block I have a fairly big RV build, and IMO, anything above a running a single 15k BTU AC with a 3 kW inverter is too much.

I am also in AZ and have to fill my roof up with solar, and then put just as much on the ground to power a single AC at 1700 watts, with a total RV draw of ~2000 watts. Any more power is just not practical unless I get a trailer of ground mounted panels. I also have a 200 LBS 13 kWh battery, so its not getting much bigger than that because of weight constraints.

My question to you, is with this set up you're suggesting, would you still be able to use the solar with the generator or grid power to fill the shortfall you'll have from solar? My RV setup will not, but my home setup will.

I believe this inverter can use the solar and generator inputs simultaneously for charging up to 140a. I really won't need the A/C for more than a few hours daily.

 

[dude_chevy]

You said they a 3000 watt inverter is too much

I am converting an 7x16 enclosed trailer into a camper. It has a 12000 btu mini split. . I ordered a 5000 watt all in one inverter/charger with a 48 volt 100Ah battery. I plan to have Water pump, fridge, tankless water heater. Am I doing over kill on the inverter? Is there any reason not to do the 5000 watt just to be sure I have enough?

 

[chrisski]

If all you have is the what you listed, I think a 5 kW could be right sized for you IF it will actually run the tankless water heater because as your only high wattage item, that is not run long. Just please keep in mind the idle draw of a larger 5 kWh inverter could be 700 Wh to 1000 Wh a day, which is a good portion of the battery pack. Personally, I'd go with propane.

You said they a 3000 watt inverter is too much

I worded that bad.

Perhaps a better way to say that is IME, for a totally off-grid solar only RV build, anything more than 2 KW on an RV is difficult, and a 3 kW inverter is right sized for that. Above a 2 KW draw between 13 kWh and 20 kWh total daily is more power than a mobile RV is capable of producing.

I believe this inverter can use the solar and generator inputs simultaneously for charging up to 140a. I really won't need the A/C for more than a few hours daily.

The OP can actually power this with both solar and generator/shore connection; not something I built mine to do.

I am converting an 7x16 enclosed trailer into a camper. It has a 12000 btu mini split. . I ordered a 5000 watt all in one inverter/charger with a 48 volt 100Ah battery. I plan to have Water pump, fridge, tankless water heater. Am I doing over kill on the inverter? Is there any reason not to do the 5000 watt just to be sure I have enough?

If this is a totally off grid-solar dependent build, you won't be able to pull 5000 watts for very long. At 180 watts per meter squared, your trailer will only fit 1552 watts of panels if the entire roof is covered. That's only 1.5 kWh to 6 kWh daily of power produced.

For me in Arizona, I need AC in the RV when camping in October and March, and for about 6 hours a day. I expect your more efficient Mini split could pull 4-10 kWh per day, so you'll likely be short on solar power to run an AC for that full six hours. For me that is a 10 kWh just for the AC energy of the 13- 20 kWh a day I make, and the rest of the power produced goes towards electric hotwater (1 kWh for a shower) and the aborption fridge at 250 kWh per hour, so if I were to get a bigger inverter, I just don't make enough power to use it.

 

[dude_chevy]

If all you have is the what you listed, I think a 5 kW could be right sized for you IF it will actually run the tankless water heater because as your only high wattage item, that is not run long. Just please keep in mind the idle draw of a larger 5 kWh inverter could be 700 Wh to 1000 Wh a day, which is a good portion of the battery pack. Personally, I'd go with propane.


I worded that bad.

Perhaps a better way to say that is IME, for a totally off-grid solar only RV build, anything more than 2 KW on an RV is difficult, and a 3 kW inverter is right sized for that. Above a 2 KW draw between 13 kWh and 20 kWh total daily is more power than a mobile RV is capable of producing.

The OP can actually power this with both solar and generator/shore connection; not something I built mine to do.

If this is a totally off grid-solar dependent build, you won't be able to pull 5000 watts for very long. At 180 watts per meter squared, your trailer will only fit 1552 watts of panels if the entire roof is covered. That's only 1.5 kWh to 6 kWh daily of power produced.

For me in Arizona, I need AC in the RV when camping in October and March, and for about 6 hours a day. I expect your more efficient Mini split could pull 4-10 kWh per day, so you'll likely be short on solar power to run an AC for that full six hours. For me that is a 10 kWh just for the AC energy of the 13- 20 kWh a day I make, and the rest of the power produced goes towards electric hotwater (1 kWh for a shower) and the aborption fridge at 250 kWh per hour, so if I were to get a bigger inverter, I just don't make enough power to use it.

Thank you for your reply. This is my first system to set up. I don't want to overtake the OP topic so I will start a new one.