2) Code using optional letters:
IP S
Code letters
1st characteristic numeral
2nd characteristic numeral
Additional letter
Supplementary letter
An enclosure with this designation (IP Code)
(2) protects persons against access hazardous parts with fingers;
- protects the equipment inside the enclosure against ingress solid foreign objects having a
diameter 12,5 and greater;
(3) protects the equipment inside the enclosure against the harmful effects due water sprayed
against the enclosure;
(C) protects persons handling tools having diameter 2,5 and greater and length not
exceeding 100 against access hazardous parts (the tool may penetrate the
enclosure its full length);
(S) tested for protection against harmful effects due the ingress water when all the parts
of the equipment are stationary.1.
.2 Examples designations with the Code
1) Code not using optional letters:
IP 4
Code letters
1st characteristic numeral
2nd characteristic numeral
An enclosure with this designation (IP Code)
(3) protects persons, handling tools having diameter 2,5 and greater, against access to
hazardous parts;
- protects the equipment inside the enclosure against ingress solid foreign objects having a
diameter 2,5 and greater;
(4) protects the equipment inside the enclosure against harmful effects due water splashed
against the enclosure from any direction.CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT 57
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