B
BES
Father in law got a shed with a 2way cu usual set up 40a 30ma rcd 16a & 6a mcbs for skt and lights. Had a problem recently with rcd tripping occasionaly ever since they had a old freezer gave them so obvious what's causing the rcd to trip nothing else plugged in but freezer but tested everthing and all ok. Told him to get rid of freezer but as it not tripping rcd every day he wants to keep.it but has asked me if there is a way of fitting some sort of alarm to tell him power is off in shed. Any ideas.