On Sunday, 28 August 2016 12:01:51 UTC+1, Harry Bloomfield wrote:

My own view is that 95% of an installation is hidden and inaccessible,

and testable from the ends.

so no brief inspection can really be as thorough as needed. Only what

No. Testing can though

can be seen, can be inspected - for the rest you rely on what bit you
can see and adequately test.

and the cabling you can't see and can adequately test.


NT