Ingress Protection
Published December 11th, 2007 in DIY, Electrical.Though not a qualified professional, I am quite competent when it comes to DIYÂ jobs around the house, particularly electrical ones.
Having just moved, I wanted to put some electrical sockets out in an area of my garden that gets quite wet when it rains and when looking for products I came across IP codes for the socket housings.
Not knowing what this meant I looked the term up and decided to post the result here for anyone else who needs to know what terms such as IP55, IP44, IP65, etc. mean when dealing with outside electrics.
IP (Ingress Protection) codes define how well an enclosure protects against the external environment.
As the number gets higher, the protection gets better.
The first digit defines the protection level against “solids”, the second against “liquids”. You MUST use both digits to define an enclosure.
| Â | First number | Second number |
|---|---|---|
| 0 | No protection | No protection |
| 1 | Protected against solid foreign objects up to 50 mm diameter (back of hand) | Protected against vertically dripping water e.g. condensation |
| 2 | Protected against solid foreign objects up to 12.5 mm diameter (finger) | Protected against dripping water up to 15° from vertical |
| 3 | Protected against solid foreign objects up to 2.5 mm diameter (tool) | Protected against direct spray of water (0.07 l/m) up to 60° from vertical |
| 4 | Protected against solid foreign objects up to 1 mm diameter (wire) | Protected against direct spray of water (0.07 l/m) from all directions |
| 5 | Dust-protected (limited ingress allowed, with no harmful deposit) | Protected against low pressure jet (12.5 l/s) of water from all directions |
| 6 | Dust-tight (totally protected against dust) | Protected against high pressure jet (100 l/s) of water |
| 7 | Â | Protected against the effect of temporary immersion between 15cm and 1m |
| 8 | Â | Protected against long periods of immersion under pressure |
So:
IP 44: Protected against objects greater than 1.0 mm diameter, Protected against splashing water
IP 55: Dust protected, Protected against water jets
IP 65: Dust tight, Protected against water jets
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