24V @ 250A Max Draw will provide 6000W and is capable of supporting up to 18,000W Surge (using a Low Frequency Inverter).
Victron & others make inverters for 24V that do this very well, you can even choose 120VAC or 240VAC.
I run my home off 24V, even can run my 120V MIG & Big Compressor without an issue BUT I am also using a Samlex EVO 4024 Inverter (tier-1 about $2K USD). This is high efficiency (95%) and only uses 11W in idle (not eco mode) and 8W in eco mode. NOTE that "Value" brand products are usually 88-92% efficient at most and have a considerably higher idle consumption, typically around 30W +/-.
The trick to support 12V properly, is that you need a respectable step-down transformer. I use a Keurl 30V to 12V/30A Transformer to support my 12V devices in the powerhouse and no problem... Now this is not a cheapo potted buck converter (stay away from those they are Nasty Bad Junk).
The Voltage GOTCHA !
When we talk about 24V (legacy from lead acid days) we are talking about 25.6V Nominal up to 30V because you can go up to 29.2V charging if pushing it to 3.650V per cell X 8 cells for "24V pack". The DC to DC Converter therefore has to be able to take 30V as well because of that.
24V/100AH Battery Pack = 2560 Watt Hours or 2.56kWh. Weight : Approx 16Kg / 35.2 Lbs
24V/280AH Battery Pack = 7168Wh or 7.1kWh. Weight : Approx 44.8 Kg / 98.7 Lbs
24V Pack requires 8 Cells, 1 BMS, 1 Fuse/Breaker. Cases are available in different formats as well