That's reasonably consistent with the rough trip times I suggested, isn't it?I'll estimate the lights/vacs were continuously running for something like 5 mins, I couldn't do much about starting surge as they are soft start. Assuming everything was running correctly I assume they were running at around 5A each and expect a total of about 13A. I expected the RCBO to trip in that time, adding low setting of fan heater tripped the RCBO in about a minute.
Kind Regards, John