Hi,
European standard is HD 637 S1:1998-12.
Just for reference, you can check on this Italian site (sorry it is in Italian language):
www.elektro.it/cei_11_1_terra_html/cei_11_1_terra_01.html
CEI 11-1 (assimilated by HD637) is the Italian standard about electrical system up to 1 kV.
By
Kim69
Hi,
sto
probably is less expensive to change the air conditioning system (3-phase type) rather than performing the suggested modifications.
Besides, I suggest you don't modify the existing air conditioner: any modification declines warranty, CE certification, and YOU could be responsible for any...