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Added mention of "IPX Codes", "IPX Rating" and some examples "IPX4","IPX7", for better search results when being searched for by persons ignorant of this standards existance. |
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One source reports that the Australian national standard AS 1939 adds to the international standard a third optional digit, which indicates protection against mechanical impact damage. It ranges from 0 for no protection to 9 for protection against 20 [[joule]] impacts (equivalent to 5 [[kg]] dropped from 40 [[Metre#SI multiples|cm]]).
This standard is sometimes referred to colloquially simply as "IP codes" or "IP ratings" of the IEC. For instance a manufacturer of an electrical/electronic product may list that products' "IP rating" as "IPX4 Waterproof" (i.e. splash proof only) or "IPX7 Waterproof" (Manufacturer defines time and pressure/depth conditions. e.g. temporarily submersible to 1 metre for up to 3 minutes.).
It could be argued that the use of the word "Waterproof" as in "IPX4 Waterproof" is misleading, as the average consumer may not be aware of this standard, and may read "Waterproof" to mean just that, i.e. Waterproof even when submersed in relatively shallow waters of a few feet.
==First digit==
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