reducing Zs vaues

[charlie]

if you get a measured value of Zs that is higher than the tabulated max.( after allowances ) what can be done to reduce this ???
Ican only think of increasing size of conductors.
Any answers please.

 

[Cirrus]

Tighten up tour terminal screws

 

[EasyFox]

Add supplimentary bonding.
Add an rcd/rcbo to circuit.

 

[wayne]

dependant on your earthing system,ie trunking and conduit where you can earth across joints you can,t beat physics.
want less resistance ,increase conductors
yes you can cool your conductors use wacky materials ,but copper and aliminium is what you got
you can try to alter your max permissable zs by calculation or use a b type mcb