Hi all
on a TT system, upfront 100mA s type rcd at origin then 5 submains out to 5 small CUs each with its own 30ma rcd main switch
on testing 30mA rcds they are totally fine with upfront RCD bypassed but when tested with upfront RCD installed, all 5 rcd trip early on test
Im thinking this is something to do with the S type RCD test button earth connection maybe?
but why is this effecting the testing of the downstream devices?
all cabling is fine, all high readings
and i have loaded the circuits with as much as i can 10-15A and the rcds are all holding fine, also the Stype is new and testing out fine too
is this an issue thats going to cause potential problems?
Many thanks
on a TT system, upfront 100mA s type rcd at origin then 5 submains out to 5 small CUs each with its own 30ma rcd main switch
on testing 30mA rcds they are totally fine with upfront RCD bypassed but when tested with upfront RCD installed, all 5 rcd trip early on test
Im thinking this is something to do with the S type RCD test button earth connection maybe?
but why is this effecting the testing of the downstream devices?
all cabling is fine, all high readings
and i have loaded the circuits with as much as i can 10-15A and the rcds are all holding fine, also the Stype is new and testing out fine too
is this an issue thats going to cause potential problems?
Many thanks