Mmortal03mmortal03 42366 silver badges1212 bronze badges Add a remark In case the UPS worked high-quality in retaining things driven up throughout outages, it's not necessary to concern yourself with the waveform issue or need to have a costly pure sine wave UPS. A midrange UPS with the exact same producer https://lipe25926.mdkblog.com/39789217/ups-1000w-no-further-a-mystery