westward10 ~ Staff member Admin Esteemed Supporter Jul 15, 2016 23,299 1 29,151 315,788 Northamptonshire If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at? United Kingdom What type of forum member are you? Electrical Engineer (Qualified) Feb 3, 2017 #21 Looks like it should connect to L1, L2 and L3.