I decided I would put this in here rather than Techie's Corner as it may get more exposure to forum members/visitors.
It seems to be fairly expansive advice/information and I would think it helpful. Of course, there may be expert advice forthcoming from informed members that may complement, expand (or challenge?) this information.
Some good stuff in there John although I question what Collyn says about TV sets as there are no Australian made units (AFAIK) and I've never seen an Indian one : "High quality, locally-made TVs now draw a fraction of the energy of the older versions. The 12V units (mostly from India) draw a lot of current. "