A fair point taken ... defining 'trade practice' is a lot like capturing a moonbeam; you know it's there, but can't quite grab it
As for the customer making the call .... the customer only rarely has any input. He'll call and ask me for a price. I'll give one based upon how I plan to do the job. Only if he specifically asks will the discussion of wiring methods begin.
As I see it, the customer is paying for my judgment, as much as anything else (Scary thought, isn't it?
) Part of my 'professional judgment' in deciding how the job will be done.
I'll admit that my bias is rooted in age and tradition, as much as any 'logical' reason. Heck, when I need to trim a tree, I reach for the axe .... and not one of those new-fangled chainsaws
