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All About LED Strips 5 - IP Protection For LED StripsBrief introduction on IP gradingThe IP Code consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. This standard aims to provide users more detailed information than commercial terms such as waterproof.The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (e.g., electrical conductors, moving parts) and the ingress of solid foreign objects:0X: No protection against contact and ingress of objects. 1X: Protected against objects bigger than 50mm, such as any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part. 2X: Protected against objects bigger than 12.5mm, such as fingers or similar objects. 3X: Protected against objects bigger than 2.5mm, such as tools, thick wires, etc. 4X: Protected against objects bigger than 1mm, such as most wires, screws, etc. 5X: Dust protected. Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment; complete protection against contact. 6X: Dust tight. No ingress of dust; complete protection against contact.The second digit indicates the level of protection of the equipment inside the enclosure against harmful ingress of water:X0: Not protected against harmful ingress of water. X1: Protected against dripping water. Dripping water (vertically falling drops) shall have no harmful effect. X2: Protected against dripping water when tilted up to 15. Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15 from its normal position. X3: Protected against spraying water. Water falling as a spray at any angle up to 60 from the vertical shall have no harmful effect. X4: Protected against splashing water. Water splashing against the enclosure from any direction shall have no harmful effect. X5: Protected against water jets. Water projected by a nozzle against enclosure from any direction shall have no harmful effects. X6: Protected against powerful water jets. Water projected in powerful jets against the enclosure from any direction shall have no harmful effects. X7: Protected during immersion up to 1 m. Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion). X8: Protected during immersion beyond 1 m. The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer.Once briefly presented the different IP ratings we move to the aim of this article, which is to describe the most common IP ratings applied to strip lights and to help choosing a LED strip light based on this rating.Which IP protection fits your strip project best?Flexible strip LED products are generally offered in two or three versions (depending on how wide is the assortment of the manufacturer):IP20: Without waterproof treatment on top of PCBs, normally fitted with "3M" adhesive tapes on backside, fit for indoor dry areas use only. Many manufacturers that do not offer an intermediate version between IP20 and IP68 claim that these strips are fit for indoor use in general, which is not a real statement and can generate failure of the installation. Humidity or occasional contact with water can happen in indoor areas such as Kitchens or Bathrooms and therefore, and therefore these areas require additional protection.IP64: With crystal resin glue protected on top of PCBs, normally fitted with "3M" adhesive tapes on backside, fit for indoor wet areas installation. This option is not always offered by all manufacturers, but those who offer it find that it is more successful than IP20 since the same width of strip allows a higher protection on top of a nicer dispersion of the light through the resin. The IP rating of these strips can be further enhanced with a proper insulation of ends and interconnections, which is why some suppliers claim these strips have a higher rating, such as IP66 or IP67. However, please note that the real IP of these products, by themselves, is IP64.IP68: With silicon transparent tube protected and sealed at the ends. It can be either fully filled with glue or just inserted within a silicon tube, being the last option more practical in terms of interconnection and reducing the weight of the strips. It can either be sold with "3M" adhesive tapes on the backside or with silicon mounting brackets and DIY spare parts supplied. The adhesive tape option is not recommended since the weight of the IP68 strips is higher and can make the glue fixing fail in the mid term, which is even more probable in outdoor areas or of course, underwater. As a result, for a truly reliable outdoor installation, only mounting brackets should be considered. These strips are fit for outdoor and 1 meter underwater applications.In conclusion, as a general recommendation, when buying a strip light always request to know the IP rating, since words such as "waterproof" or "fit for indoor use" can be deceptive....
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