if i were you i will leave the box alone if you are not quaifed electrican as hotline say and we spend alot of time training and safty too... and i read your profile and dont have any info about your trade is ??
but unforetely we ran some nonquaifed electrican on this form whom cant describe the items and we try to explain but for all sparky with us we work hard to keep everyone safe here so please please if you are not famiur with electral system best thing to is get electrican in your area to help you this is the best safe way to deal with it
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)