redman
Member
Hi,
Could someone please confirm that I am thinking along the right lines with this. (Ive never worked on a TT system)
Just as an example........Say I install a circuit on a TT system.
The Ze reading is 16 ohms
The R1 + R2 reading is 0.25 ohms.
So if i calculated the Zs, it would be 16.25 ohms.
Obviously this is going to be alot higher than the max Zs values in the BGB,
But because every TT circuit should be RCD protected, my disconnection time would be less than 0.2 seconds.
So.....would this be the way to conform to the current regs ?
Cheers
Could someone please confirm that I am thinking along the right lines with this. (Ive never worked on a TT system)
Just as an example........Say I install a circuit on a TT system.
The Ze reading is 16 ohms
The R1 + R2 reading is 0.25 ohms.
So if i calculated the Zs, it would be 16.25 ohms.
Obviously this is going to be alot higher than the max Zs values in the BGB,
But because every TT circuit should be RCD protected, my disconnection time would be less than 0.2 seconds.
So.....would this be the way to conform to the current regs ?
Cheers