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Posted By Topic: Cord Extension Socket Shroud Cut Fails T&T

ShaneR
Jan 24 2016 13:13

Hi all

My last refresher coarse alerted me to the fact that damaged or removed Cord Extension Socket \"Shroud\" is a fail for tag and test.

This is found in AS/NZS 3760:2010 2.3.2.c.h

\"...if fitted, the shroud on cord extension sockets should be inspected for damage.\"

I was recently on a site where sound and visual equipment was hired. All the gear was Tag and Tested but 75% of the sockets had been cut to fit small transformers etc

Question

Why is there a shroud?

Why is it important that it is not cut off?

I assume its not classed as electrically unsafe so I can just walk away?



   

ppaw1965
Jan 24 2016 13:44

The shrouds came in around the same time as the insulated A&N pins. All done to stop the accidental touch of the live pins. As a work around a double adapter could be plugged in the socket. Silly thing is this negates the purpose of the shroud but would be legal. All new power packs should fit the shrouds. The ones that don\'t probably don\'t have insulated pins. Perhaps suggest an upgrade.
Also if the shrouds are damaged I would see the tag test negated and as re for them to be repaired.
   

SteveH
Jan 24 2016 22:52

Q/Why is it important that it is not cut off?

One of the things a lot of \"qualified\" taggers struggle with is the concept that TnT\'ing to 3760 (and 3012 where applicable) is the fact that it is not just a test of \"electrical\" safety of an item under test, but also a check of it\'s general safety and part of that assessment is a check that any guards/features etc deemed necessary and fitted by the items manufacturer are fitted and not modified to reduce their \"functionality\" or effectiveness.

If the item\'s maker fitted a grommet to relieve stress on the items cordset, and that is damaged, that too is a safety feature that needs to be reinstated for the item to pass.

Other things to look for are rating plates, compliance with the rated current and the plug fitted (also an E(S)R requirement, functionality of controls and the item operates.

If an item doesn\'t tick all the boxes, it doesn\'t pass


   

zl2aj
Jan 25 2016 08:39

Worse than not pass T&T - cut away shroud falls into electrically unsafe (ESR 22b) and shouldn\'t be used (ESR15). Certainly not tagged.
   

ShaneR
Jan 25 2016 10:33

\"22 (b)
the fitting is intended to have, or is supplied as having, a safety function, but does not in fact serve that safety function\"

If its a safety function then as mentioned above why don\'t power boards and wall sockets have shrouds? Im just trying to work out why extension leads are different?

In my last refresher coarse they highlighted \"culpability\" ESR 19. If you see something dangerous you must report it? I have now read ESR 19 and its a bit different to what I was hearing on the refresher coarse.

My problem is I was on a site that needed Tag and test for extension leads. There must have been a few hundred leads. 50% were hired and 50% were owned by the site.
The hired leads were tag and tested un-expired but 75% has the shrouds cut off. I didn\'t touch these leads. But the leads owned by the site had no tags. I thought I would do the correct thing and tag and test them. But I found that 25% of these leads also had there shrouds cut off. I failed then of cause. The problem is the owner got a little grumpy because why am I failing these when all these hire leads are tagged and have cut shrouds and we are using them?

All I want to know as an electrician what is my \"culpability\" and what is the correct coarse of action in this situation?

The way I read ESR 19 I don\'t think this case meets the threshold for reporting but all I need to do is say I don\'t believe those hire leads comply and I won\'t tag leads with missing shrouds and leave it at that?





   

zl2aj
Jan 25 2016 11:22

\"If its a safety function then as mentioned above why don\'t power boards and wall sockets have shrouds? Im just trying to work out why extension leads are different?\"

I refer back to the key words in ESR22b \"supplied as having\". Multiboxes and socket outlets (some) are not supplied as having so thus the safety function of the ring does not need to be there.

You are correct not to tag the leads. You are correct it does not meet the \"immediate\" threshold of ESR19. But it does meet ESR15. The leads should not be used. A word to the T&Ter might be in order, and to the hire company (if different). Over to you if you feel the need to take it further.

Any safety function that is designed into a fitting (which an extension lead is) must stay. Rings started appearing over 10 years ago (more like 15?) now so we should be over it. Replace the plug with a 3112 compliant plug. Then the problem goes away.

Curious how you read ESR19 differently. Unless you are referring to the \"while carrying out PEW\" bit? Then yes technically correct. But morally I would suggest reporting anything that poses immediate danger to the owner first - to Worksafe second. Usually reporting it to the owner makes the problem go away.

   

ShaneR
Jan 25 2016 14:52

Thanks zl2aj for your words of wisdom

I\'m trying to get back in the game and trying to find where the line is

There appears to be a difference between where ESR(2010) wants us to be and where we are as a society. Maybe it always been this way?

I think CoC\'s and ESR 19 have changed the way I think.

I think there is a fine line between going over the top and doing nothing at all?

\"Curious how you read ESR19 differently. Unless you are referring to the \"while carrying out PEW\" bit? Then yes technically correct. But morally I would suggest reporting anything that poses immediate danger to the owner first - to Worksafe second. Usually reporting it to the owner makes the problem go away.\"

Yep..........

I\'m personally struggling how cutting a shroud creates \"immediate danger\". Anyway that\'s what the book says so that what I do.

Thanks



   

ShaneR
Jan 25 2016 15:04

\"Unless you are referring to the \"while carrying out PEW\" bit?\"

That bring up another point

Is ESR 19 saying PEW \"any work per site\" or PEW on the \"actual faulty equipment\"

I was doing PEW on site but not on the extension leads
   

niffa
Jan 25 2016 19:08

The shroud is there to ensure and object such as the edge of a alum\' ladder can not slip between the plug and socket until the phase contact has been withdrawn from its contact.
I would call that an important safety feature and so tagging a lead with this cut off would not be clever or complient.