7 Things an Outdoor Switchboard Must Have in NZ

 

Non-metallic outdoor switchboards in New Zealand get a bad rap for not being able to withstand the harsh U.V rays. But, when a switchboard is made with the right composites, and in the right configuration, an NZ U.V rated polycarbonate switchboard should see out at least 5 years of outdoor service. Read on to find out what else can affect the longevity of a polycarbonate enclosure.

1.  NZ UV rated enclosure.

This is a biggie for some painted metallic or plastic enclosures. Countless studies have shown that the U.V ratings are much higher in New Zealand (and in fact, the southern hemisphere), which means there must be sufficient U.V protection to prevent the switchboard from becoming brittle or cracked in the sun –  but more on this in another Industry Insight on our website.  Having a tried and tested NZ U.V rated enclosure is a must *.

2. IK rated to IK08 or higher.

And the higher the better! IK rating is a measurement on how well an object can withstand being hit by an object (let’s say a hammer) at increasing intensity without breaking. Polycarbonate can range from IK08 to IK10 and is able to flex without breaking – just watch your face on the re-bound. Painted metal enclosures on the other hand, will end up with unsightly paint chips, rust, and/or dents which can affect the IP rating.

3.  IP rated to IP65 or higher.
The aim is to at least keep the rain out. IP rating is a measurement of how well the enclosure will keep out dust and water. The higher the numbers, the more protection the enclosure offers. IP65 will keep dust out and withstand a high pressure wash down. Most outdoor metal enclosures are rated to IP65 if the dust seals are still intact and haven’t oxidized or dry rotted. 

4.  Correct termination.
Water and electricity don't mix. The last thing you want is exposed cables or a loose termination. Use Clampo Terminals to help make the termination quicker and use outdoor approved conduit. we have stain relief options available to prevent any incomers putting strain on the cabinet and potentially compromising the installation. 

5.  The switchboard is secured properly.
No, we don’t mean electrical tape reinforcing to a pole. Having the correct mounting feet to bolt to a wall, bracket system, metal strapping for pole mounting, and the right locking system for the door are all equally important for the longevity of a switchboard. You can have hats a jaunty angle, but switchboards just don't look right hanging at 45's.

6.  Properly fitted plugs or sockets.
You don’t want anything getting in or out. Not only will loosely fitted plugs let damaging moisture in, but it could also make for an apartment block for a colony of ants (yes, seen it happen). Having cut-outs cut to size, and in the correct place on the cover, with the correct sealant, makes for an easy to wire and properly fitted socket. Worried about things getting out? Well, a properly secured plug shouldn't just come off with the power connector when you have finished with it. Should it now. Go straight to jail, do not pass GO, do not collect $2M.

7.  U.V safe accessories like plugs/sockets or cable glands.
Now, this can be a trap for young players. While the switchboard itself may be marketed as polycarbonate and UV stable, sometimes the windows or sockets mounted to the enclosure are not. And, in some instances, accessories like the hinges or latches, can be made from a different composite such as ABS that will disintegrate at a faster rate compared to the rest of the enclosure. As we have found out, ABS composites or Fibreglass materials disintegrate much, much quicker than polycarbonate does when exposed to NZ U.V. 

While we have been able to compile a short list of important aspects an outdoor switchboard should include, there are other conditions to take note of. Such as, where the switchboard is to be mounted, are there any chemicals present, and does it need to be lockable. To find out more, check out some case studies or our Industry Insights page. Or contact us and we can provide more information or find you a solution.  

*NZ U.V rated enclosures include: CUBO, PolyBox, Ecology & Star enclosures found on our website.

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