- Reaction score
- 12
these figues that the Supply authority will say depending on the supply.
Be carefull with TT systems as the supply authority will state 21 Ohms this is the resistance of there earth rod at the transformer. When you install an earth rod the combined resistancce of your rod + theres must be under 200 ohms.
Be carefull with TT systems as the supply authority will state 21 Ohms this is the resistance of there earth rod at the transformer. When you install an earth rod the combined resistancce of your rod + theres must be under 200 ohms.