Which would handle more surge from pumps/motors? Two SPF 3000 LVM Growatts (120/240), or a single SPF 5000 ES Growatt with Autotransformer (120/240)?
Loads:
1 hp jet pump 120v 9.6A / 240v 4.5A (estimating 11kW surge)
1 fridge at 120v 1.7A
Panels: 1600W: 4x 400W 9.65A Imp, 50.1Voc (small setup for remote building)
Battery: Eg4 48v 100AH
I suppose I could stick with 120v only, but thought it would be wiser (efficiency?) to run that pump at 240v (but that still leaves me needing 120v for the fridge, hence question about split-phase).
The other factor I am battling is this is for a SMALL setup. 3-4x 400W panels (not maximizing perf/efficiency of the inverters/chargers). The issue here is minimum voltage, so the Growatt SPF 3000 LVM at 60v-115v input is going to be better with fewer panels than any of the more "modern" and "standard" 120v-250v operating input.
Here are some options I've been considering:
I welcome any input.
Loads:
1 hp jet pump 120v 9.6A / 240v 4.5A (estimating 11kW surge)
1 fridge at 120v 1.7A
Panels: 1600W: 4x 400W 9.65A Imp, 50.1Voc (small setup for remote building)
Battery: Eg4 48v 100AH
I suppose I could stick with 120v only, but thought it would be wiser (efficiency?) to run that pump at 240v (but that still leaves me needing 120v for the fridge, hence question about split-phase).
The other factor I am battling is this is for a SMALL setup. 3-4x 400W panels (not maximizing perf/efficiency of the inverters/chargers). The issue here is minimum voltage, so the Growatt SPF 3000 LVM at 60v-115v input is going to be better with fewer panels than any of the more "modern" and "standard" 120v-250v operating input.
Here are some options I've been considering:
- LVX6048. Pros: 120/240 on a single device, low freq, likely handle the surge. Cons: high idle draw, especially bad when not planning on full/max panel setup.
- SPF 3000 LVM (2x). Pros: should handle surge, will operate with less panels or low sun (60v input). Cons: need 2 devices to get split 120/240, heck, still need 2 devices to handle surge even on just 120v.
- SPF 5000 ES + Autotransformer. Pros: might handle surge (pushing it with a 10,000VA limit, maybe transformer will help??). Cons: needs autotransformer to get split 120/240 which also adds idle draw, more wiring/hardware.
- LV6548 + Soft Start. Pros: LV6548 is awesome, future-proofing. Cons: only gets me 120v (not stacked), soft-start devices are not cheap, also not even sure what to get for that or whether it would work.
I welcome any input.