Note - The marking of the symbols corresponding to IP numbers is optional.
| Amperes | A | ||
| Frequency (hertz) | Hz | ||
| Volts | V | ||
| Watts | W | ||
| Class II |
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| Class III |
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| Rated maximum ambient temperature | ta … °C | ||
| Warning against the use of cool-beam lamps |
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| Minimum distance from lighted objects (metres) |
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| Luminaires with built-in ballasts or transformers suitable for direct mounting on normally flammable surfaces |
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| Ordinary | IP20 | no symbol | |
| Drip-proof | IPX1 |
|
(one drop) |
| Rain-proof | IPX3 |
|
(one drop in square) |
| Splash-proof | IPX4 |
|
(one drop in triangle) |
| Jet-proof | IPX5 |
|
(two triangles with one drop in each) |
| Watertight (immersible) | IPX7 |
|
(two drops) |
| Pressure-watertight (submersible) | IPX8 |
|
(two drops and max depth of submersion) |
| Protected against solid objects greater than 2.5mm | IP3X | no symbol | |
| Protected against solid objects greater than 1mm | IP4X | no symbol | |
| Dust-proof | IP5X |
|
(a mesh without frame) |
| Dust-tight | IP6X |
|
(a mesh with frame) |
| Use of heat resistant supply cables, interconnecting cables or external wiring |
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| Luminaires designed for use with bowl mirror lamps |
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| Rough service luminaires |
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| Luminaires with high pressure sodium lamps, requiring an external ignitor |
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| Luminaires for use with high pressure sodium lamps having an internal starting device |
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