I want to wire my Multiplus to a 3 prong (L, N , E) plug and plug that into a home wall socket to use as a UPS. The manual states:
"- In a fixed (for example terrestrial) installation an uninterrupted chassis ground may be provided by the AC input ground wire."
What is not clear to me is if I need to split the earth wire coming from wall power to go into AC in and also the chassis ground. Are they combined internally or not?