- Reaction score
- 8
If i were to install a new circuit in an existing cu asuming all the calcs are ok and the board will handle said amps for new circuit ,what test am i required to do pre install. Am i right in sayin polarity of main incommers ,ze and pfc would be all im required to do or would i attempt to look for faults on existing circuits as these may affect my new install and possibly trip if im installing say an rcd or rcbo where none was present before. If i am required then to what extent do i test, just irt or go for full r1 r2, (r1 rn, end to end )and zs on all circuits in cu. Any help appreciated thanks BigSpark