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Posted By Topic: Compliance docs for control panel

knuckle
Jun 09 2017 13:57

Hi All,

Lets suppose you are assembling small control panels and selling them to another electrician to install. Apart from supplying SDoCs for any DMRA componants within the panel, is there any other legally required documentation required from the vendor? I believe that once installed it becomes part of the installation and the responsibility for certification falls to the electricion signing the CoC/ESC. Your thoughts gents?
   

AlecK
Jun 09 2017 14:16

as an intermediate supplier, you don't have to provide copies of SDoCs; just have to know that original NZ supplier has issued them for each DMRA.

Correct that such equipment becomes part of an installation, and is covered by the CoC issued by / on behalf of the installer.
   

knuckle
Jun 09 2017 14:24

Thanks for the quick reply. Cheers
   

donny
Jun 26 2017 08:56

Belated reply here, but remember that certification from the electricians point of view is limited. i.e. IRT, earthing, nameplate current rating vs cable etc

It doesn't absolve (for instance) a control box which explodes a few days later due to it's own internal design issues.

Electricians are not necessarily commissioning equipment. That is a different role.
   

evanh
Jul 10 2017 02:31

Donny,
Ah, that's quite a good point. I've been trying to get my head around what is an appliance. Alec mentioned how even a fitting can be called an appliance.

This has now gelled for me, in that all fittings start as appliances when viewed as trusted items to be installed. They are each a little black box that has some specs associated with them. We install by the specs then test the installation afterwards.

   

evanh
Jul 10 2017 02:34

In this case, the control panel itself is also an appliance because it was prebuilt to a spec.

   

aldude
Jul 12 2017 15:33

Hi all,

Now lets go one step further with the control panel.Lets add a switch-mode power supply that has a sdoc and we make a battery charger.The 240v to 12v power supply has a sdoc,so do the other 240v components (switch/Plug/lead/socket etc),my pcb regulator only uses the 12v output from the power supply to charge the battery.

Question: Does the battery charger now have to be independently tested to AS/NZS 60335.1 "Household and similar electrical appliances" requirements before I can sell it to the public, even though all the 240v components enclosed are supplied with a sdoc.

Be interested in your comments, Thanks


   

acentriatech
Jul 12 2017 19:38

In this case, the control panel itself is also an appliance because it was prebuilt to a spec.

http://www.acentriatech.com
   

AlecK
Jul 13 2017 08:38

While some fittings can be an appliance, not all fittings are appliances.

A more accurate way to think of this is that everything electrical is "fittings". Works is a collection of fittings that, as a whole, meets a particular definition. An installation is a collection of fittings that, as a whole, meet a different definition definition. An appliance may be a single fitting that consumes electricity, or a collection of fittings that, as a whole, consume electricity.

A control panel will likely contain some "appliances" eg contactor coils and other things that consume electrical energy. On the other hand, some appliances will include a control panel. There is no simple "rule" that makes a clear dividing line that can be use in every case.


The suggestion that an electrician's certification doesn't cover a control box that "explodes" is simply wrong. A coC certifies that EVERYTHING the electrician has installed is electrically safe, and compliant with ESRs. In order to make that required claim; the certifier may rely in good faith on SDoCs and other documents as listed in ESR 65. If they do so, they must declare that fact, and "attach" copies of documents relied on. Failing that, such documentation cannot reduce / share the certifier's liability for every aspect of what they install.