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How do you do....it? Thread, PAT Testing a TFT Monitor, external adapter in Technical; Originally Posted by powdarrmonkey 3. GET BACK ON THE COURSE BEFORE YOU KILL SOMEONE. The course I went on said ...
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    enjay's Avatar
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    Quote Originally Posted by powdarrmonkey View Post
    3. GET BACK ON THE COURSE BEFORE YOU KILL SOMEONE.
    The course I went on said not to test PCs and other low-voltage IT equipment, as the testing can damage it; it is sufficient to test the power cables and perform visual inspections; new equipment does not need testing. This is what I've been working to ever since.

    Are you saying - with supporting evidence please - that this is incorrect?

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    The document that enjay linked to mentions that class 2 computer equipment doesn't need to be tested.

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    From our recently trained in house guy.

    Every 12 months for visual inspection on class 2 equipment and every 48 months for combined inspection and testing.

    This applies to school environment.

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    Quote Originally Posted by powdarrmonkey View Post
    That document doesn't even contain the words "Class 3".
    No, but it does contain the words "IT equipment" and "VDU screens" (page 5), hence me thinking it relevant to this monitor.

    Quote Originally Posted by powdarrmonkey View Post
    I think I understand what you're getting at. The monitor itself is an SELV device, but you're not testing the monitor. You're testing the adaptor, which plugs into the mains and is class I or II, unless you've paid $$$ for it. FFS, look at the brick and tell me if you see the class II or III mark on it.
    No Class II or Class III marks, nor the double-square thing. It does say "listed level 3" though, is that the same as Class III. I can put a picture up here if that would help...

    I guess my question is that since I can't test just the cable and shouldn't test the monitor, how do I do this?

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    Quote Originally Posted by ICT_GUY View Post
    From our recently trained in house guy.

    Every 12 months for visual inspection on class 2 equipment and every 48 months for combined inspection and testing.

    This applies to school environment.
    There's no law that states how often something needs inspection and/or testing. It's basically all just common sense. But that timetable he was given sounds reasonable enough.

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    powdarrmonkey's Avatar
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    Quote Originally Posted by enjay View Post
    The course I went on said not to test PCs and other low-voltage IT equipment, as the testing can damage it; it is sufficient to test the power cables and perform visual inspections; new equipment does not need testing. This is what I've been working to ever since.
    What kills soft equipment is the 26A earth bond test, so you reduce it to 100mA. Oh, and the flash test, which is unnecessary in 99% of cases.

    Are you saying - with supporting evidence please - that this is incorrect?
    See the 17th editions.

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    Quote Originally Posted by enjay View Post
    I guess my question is that since I can't test just the cable and shouldn't test the monitor, how do I do this?
    You can't. If it works, and there's no damage on inspection, it'll be fine.

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    Quote Originally Posted by enjay View Post
    No, but it does contain the words "IT equipment" and "VDU screens" (page 5), hence me thinking it relevant to this monitor.
    It also says "if doubly-insulated", and so far you have no evidence that this is the case.

    nor the double-square thing.
    That would be "doubly-insulated", the class II mark. I rest my case.

    It does say "listed level 3" though, is that the same as Class III.
    No.

    I can put a picture up here if that would help...
    No.

    I guess my question is that since I can't test just the cable and shouldn't test the monitor, how do I do this?
    You're not testing the monitor! FFS!

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    Quote Originally Posted by powdarrmonkey View Post
    You're not testing the monitor! FFS!
    Firstly, calm down. Secondly, I know that - I'm asking if I need to test the adapter and how I go about that.

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    Quote Originally Posted by fafster View Post
    There's no law that states how often something needs inspection and/or testing. It's basically all just common sense. But that timetable he was given sounds reasonable enough.
    Straight from the IEE code of practice. That is the recommendation, stray from it and you will have to justify yourself should something go wrong.

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    Quote Originally Posted by powdarrmonkey View Post
    You're not testing the monitor! FFS!
    You don't seem to understand the issue here powdarrmonkey. Enjay is trying to ensure that he doesn't damage the equipment by doing needless tests. Regardless of your personal opinions regarding his suitability to do testing (which are irrelevant), he is confused as to how to test the adapter without the monitor being involved and therefore being at risk of damage.

    Personally, I can see his point - I go mad when our PAT tester goes merrily flash testing things...

  12. Thanks to localzuk from:

    enjay (2nd March 2010)

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    For all those above who do not KNOW what they are doing, or have forgotten their training (or in some cases recieved dubious training) can I recommend that they get over to Amazon and buy a copy of both of these:-

    [ame="http://www.amazon.co.uk/PAT-Appliance-Service-Inspection-Electrical/dp/0750687363/ref=sr_1_3?ie=UTF8&s=books&qid=1267525817&sr=8-3"]Scaddan[/ame]

    [ame="http://www.amazon.co.uk/Practice-Inspection-Testing-Electrical-Equipment/dp/0863418333/ref=pd_bxgy_b_img_b"]The Code of Practice[/ame]

  14. Thanks to Andrew_C from:

    tumbleweed (3rd March 2010)

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    Quote Originally Posted by localzuk View Post
    Personally, I can see his point - I go mad when our PAT tester goes merrily flash testing things...
    Kick them off site. Nothing needs flashing in a school environment, unless it is in for repair by competant people, or a prototype in an engineering school.

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    hil
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    Quote Originally Posted by enjay View Post
    The adapter and monitor.

    We've been given it second-hand, so I want to have it tested (we were advised not to bother with brand new equipment).
    You should do brand new equipment so that you know how old there are and when you need to retest them.

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    Quote Originally Posted by hil View Post
    You should do brand new equipment so that you know how old there are and when you need to retest them.
    We have been categorically told by our council that we don't need to do new equipment. We add them to an inventory, as with all equipment, so we know age, and leads have labels put on with their 'Do not use after' dates on but that's it. (This doesn't apply to obviously damaged equipment etc...).

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