September 2, 20224 yr Good day Im busy researching my first solar power system if you feed your 5kw inverter 3330w at 300v what kind of load would you actually be able to carry with the inverter? and how do i calculate the load? Edited September 3, 20224 yr by Baardman wrong values
September 3, 20224 yr 23 hours ago, Baardman said: what kind of load would you actually be able to carry with the inverter? That depends mainly on the rating of the inverter. So a 5 kW rated inverter can carry 5 kW continuously, usually a fair bit more (up to double) for a short time (usually about 10 seconds or less). But if in battery mode, how long you can carry maximum load depends on the state of charge of the battery, unless it can fall back to bypass mode, or blend utility power with battery power. Of course, during load shedding, you can't use utility power. The PV voltage is irrelevant to this calculation. If feeding in PV of 3330, then it can completely supply a load of a little less than this. Taking some typical figures of 93% efficiency and 50 W idle power draw, you can supply a load of 3300 x 93/100 - 50 = 3019 W all from solar. You can still supply loads higher than that, but the battery will be contributing some of it, and will eventually run out. Loads lower than that figure will allow some charging of the battery, if that's enabled. I hope that this makes sense.
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