![](http://photos1.blogger.com/x/blogger/3025/2966/320/871222/frankfurt.jpg)
Just as many households find that when they come to test the Christmas tree lights, there is one which is failing to light; that the whole string may then fail, if wired in series; those Council illuminations that bedeck various lamposts are just as bad, but fail to be fixed.
Are there no standards left anymore?