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Topic Title: zone 2 fan please help
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Created On: 08 December 2011 08:40 PM
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 08 December 2011 08:40 PM
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goldenboy1818

Posts: 503
Joined: 22 February 2011

hi i want to fit a mains extractor fan in zone 2, is this ok, im thinking yes but as long as it is ip rated, now would a rating of ip24 be enough or must be it ip44, please help thankyou
 08 December 2011 08:50 PM
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goldenboy1818

Posts: 503
Joined: 22 February 2011

ip rating of x4 for zone 2, when it says x what does that require it to be ?
 08 December 2011 08:58 PM
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daveparry1

Posts: 6392
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You do know that this job will be notifiable don't you?
Do you have a regs. book or even an OSG?
 08 December 2011 08:58 PM
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Dave69

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Joined: 16 July 2011

IPx4 means it must be Protected against sprays from all directions,
The first digit, is the protection agaist solid objects, the x means that digit can be anything as you are not worried about solid objects
The second digit is the protection against liguids
 08 December 2011 09:03 PM
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goldenboy1818

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thank you very much, thats what i thought ip24 will be fine then, thanks again
 08 December 2011 09:19 PM
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Dave69

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First number (Protection against solid objects) Definition Second number (Protection against liquids) Definition

0 No protection 0 No protection

1 Protected against solids objects over 50mm (e.g. accidental touch by hands)
1 Protected against vertically falling drops of water

2 Protected against solids objects over 12mm (e.g. fingers)
2 Protected against direct sprays up to 15o from the vertical

3 Protected against solids objects over 2.5mm (e.g. tools and wires)
3 Protected against direct sprays up to 60o from the vertical

4 Protected against solids objects over 1mm (e.g. tools, wires and small wires)
4 Protected against sprays from all directions - limited ingress permitted

5 Protected against dust - limited ingress
5 Protected against low pressure jets if water from all directions

6 Totally protected against dust
6 Protected against strong jets of water e.g. for use on shipdecks -

7 Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes

8 Protected against long periods of immersion under pressure

Edited: 08 December 2011 at 09:32 PM by Dave69
 08 December 2011 09:49 PM
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Legh

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IPXX, if it exists, means that it has not been tested to any standard then not applicable to any form of protection.
So, IP X4 means that it has been tested by one of the UKAS accredited labs to various BS EN standards, for water falling on all directions on the fitting.

The manufacturer probably decided not to have the appliance tested for ingress of foreign bodies as this would incur higher manufacturing costs.

Legh

-------------------------
Why do we need Vernier Calipers when we have container ships?

http://www.leghrichardson.co.uk

"Science has overcome time and space. Well, Harvey has overcome not only time and space - but any objections."
 08 December 2011 10:00 PM
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daveparry1

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And logically if liquid cannot enter it's unlikely that solid objects could either?

Dave.
 08 December 2011 10:38 PM
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Legh

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Originally posted by: daveparry1

And logically if liquid cannot enter it's unlikely that solid objects could either?

Dave.


and logically, you are absolutely correct, but the manufacturer has not had it tested therefore could not guarantee that it would be dust proof because it doesn't have a UKAS certificate of compliance.

Paperwork

Legh

-------------------------
Why do we need Vernier Calipers when we have container ships?

http://www.leghrichardson.co.uk

"Science has overcome time and space. Well, Harvey has overcome not only time and space - but any objections."
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