Recent tws in this reply to #42km3dq
Residual current circuit breaker with overload protection (RCBO) Type F,
is what I need for each circuit, one rated for 2.5amps, the other three rated for 4.0 amps, which is just under the limits of the Inverters. These (RCBO) Type F, are new technology and very expensive, designed NOT to trip when sensing inductive loads from motors found in washing machines for example. Can’t find where to buy them.