Sorry I did overlook the three phase issue, if your going to have 3 phases supplied from the meters to each switchboard then 25mm is heaps.
What is your curent supply to the house and shed/office? 3 phase?
Printable View
Sorry I did overlook the three phase issue, if your going to have 3 phases supplied from the meters to each switchboard then 25mm is heaps.
What is your curent supply to the house and shed/office? 3 phase?
Yes its three phase using what looks to be really thin wire, not to mention old.
probably 4mm, very common for older properties