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What is IP Rating's?

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What is IP Rating's?
 The Ingress protection system is an international standard and allows you to easily see how resistant a product is to different environmental elements.
This system uses a two digit code to specify the degree of particle and water resistance of a luminary, the first digit indicates the degree of protection of the interior from the ingress of solid foreign objects, the second digit indicates the degree of protection of the interior from the ingress of water.
First number
Definition
Second number
Definition
0
No protection
0
No protection
1
Protected against solids objects over 50mm (e.g. accidental touch by hand)
1
Protected against vertically falling drops of water
2
Protected against solids objects over 12mm (e.g. fingers)
2
Protected against direct sprays up to15°from the vertical
3
Protected against solids objects over 2.5mm (e.g. tools and wires)
3
Protected against direct sprays up to 60°from the vertical
4
Protected against solids objects over 1mm (e.g. tools, wires and small wires)
4
Protected against sprats from all directions-limited ingress permitted
5
Protected against dust-limited ingress (NO harmful deposit)
5
Protected against low pressure jets if water from all directions- limited ingress permitted
6
Totally protested against dust
6
Protected against strong jets of water e.g. for use on ship decks - limited ingress permitted
7
Protected against the effects of temporary immersion between15cm and 1m. Duration of test 30 minutes
8
Protected against long periods of immersion under pressure
eg.IP67 means totally protested aganist dust, and the effects of temporary immersion between 15 and 1m, for 30minutes.