On Wed 21 Nov 2018 16:12:31 NZDT +1300, Mark Atherton wrote: Thanks Mark. Perhaps plan B is called for. Remove relay plastic case, observe size of contact arc... Was that company standard issue for item 3 where you come from...? Cheers, Volker -- Volker Kuhlmann http://volker.top.geek.nz/ Please do not CC list postings to me.