Tns 3 phases,clamp round old supply cable which has the metal sheath under the cloth type material, tried testing directly on to the supply cable sheath aswell as on clamp both around 8.4
I am away to start testing a shop which has a ze of 8.34 and has no rcd protection on any circuits, should this be code 1 on condition report and should I shut off power and install a tt system until an earth can be provided by supplier. ??
When doing my figure of 8 on the ring circuit to get my r1 + r2 value i get 0.18 at the db. But at the socket outlets when using plug in lead for megger the results are varying at sockets up to about 1.8 ohms. However when i screw the faceplates off and use the leads in the terminals inside the...
i am starting testing static caravans for foreigners on a farm, with the new condition report sheets. Does a static caravan come under section 721 of the regs or is it section 717. not sure as these caravans could not be towed by a car and would need transported by a lorry.
had too for short term fix, didnt have anything else but surely better that than the earthing that was there before no !! will replace earth clamp on monday tho :)
why would u leave an installation with 68.4 ohms as a Zs, 1667 ohms or not that is clearly something u would investigate. makes u wonder wat goes thru some folks head !!!!
had a further look yesterday at the earthing, tried continuity test between clamp and sheth just below cut out and was gettin no reading turns out that the original clamp had actually been clamped round a very thin layer of the incoming cable material and was gettin very poor connection. put new...
Its cable with an outersheath which is a material wrapped round. then stripped back before cut out and earth clamp onto inner sheath. very old cutout also
started a periodic inspection on a hotel today to find out the Ze was 2.8 ohms which now means that a lot of my Zs values are above what they should be. a PME connection is rquired but if the installation has to be bought up to 17th edition (as it is in domestic situations)before the SSE will...
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