My new abode is currently TT with a reported Ze of 190 ohms. It's sitting on granite and the prospect of driving in multiple rods is not particularly appealing (which, presumably, is why we haven't been able to locate from the previous owner). I've contacted WPD and they confirm that PME is available. Is there any reason why I would not accept it? (Apart from the fact that WPD want to charge £163.03 whereas my previous DNO did it for free!) We're very rural and the supply is overheads with a pole mounted tx in the garden.
So where am I now, take the PME, take the PME and and run the tape or ignore PME and improve my TT with more rods or tape in trench.
Why does it need improving for TT? 190Ω should be fine unless you've got RCDs of over 100mA and is within the band usually recommended to electrode stability.
- Andy.
Well ... 190 ohms would not permit some models of EV to charge.
So where am I now, take the PME, take the PME and and run the tape or ignore PME and improve my TT with more rods or tape in trench.
Why does it need improving for TT? 190Ω should be fine unless you've got RCDs of over 100mA and is within the band usually recommended to electrode stability.
- Andy.
Well ... 190 ohms would not permit some models of EV to charge.
