Walaby wrote: Sorry if my comments were taken as quibbling.
My apologies to you as well Mike as my comment about "quibbling" wasn't specifically addressed to you but the fact that such a simple subject as plugging a trailer wired with 30 amp service into a 50 amp campsite source can result in (now) 3 pages of discussion! No wonder much more complex subjects such as batteries can generate dozens of pages of debates. :R