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Rerouting Not Rewiring Cables - Need To Be Signed Off?
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<blockquote data-quote="binky" data-source="post: 477635" data-attributes="member: 490"><p>because it's quicker and easier than testing individual ccts if it works. I have used global testing in the past, but I really don't feel it tells you what is really going on with the individual ccts, for example, everything may test out at &gt; 200 M Ohm bar 1 cct which is say 50M Ohm. This would suggest to me that that 1 cct needs closer attention if all the cabling is the same age and maybe developing a fault of some sort / has suffered cable damage from when it was installed such as a back box screw nicking the insualtion. </p><p></p><p>Global tetsing is a bit like speed limits. A modern car with modern brakes and suspension doing 70 mph on the motorway is a lot safer than an old Morris Minor doing the same speed in the same conditions yet for the purposes of the law both are considered to be driving safely...</p><p></p><p>BUt goingback to my prevoius point, if we were really expected to calculate global values there would be a box to fill on the test certs - lord knows we have hundreds of boxes to tick and fill in these days! </p></blockquote><p></p>
[QUOTE="binky, post: 477635, member: 490"] because it's quicker and easier than testing individual ccts if it works. I have used global testing in the past, but I really don't feel it tells you what is really going on with the individual ccts, for example, everything may test out at > 200 M Ohm bar 1 cct which is say 50M Ohm. This would suggest to me that that 1 cct needs closer attention if all the cabling is the same age and maybe developing a fault of some sort / has suffered cable damage from when it was installed such as a back box screw nicking the insualtion. Global tetsing is a bit like speed limits. A modern car with modern brakes and suspension doing 70 mph on the motorway is a lot safer than an old Morris Minor doing the same speed in the same conditions yet for the purposes of the law both are considered to be driving safely... BUt goingback to my prevoius point, if we were really expected to calculate global values there would be a box to fill on the test certs - lord knows we have hundreds of boxes to tick and fill in these days! [/QUOTE]
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Rerouting Not Rewiring Cables - Need To Be Signed Off?
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