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Indoor light types - energy consumption and other characterisctics
| Type | Temp. Color (k) | Color Eff. (Ra) | Life (hours) | Auxiliar electric equipment | Posibility to regulate intensity and power | Efficiency (Lm/w) |
| Incandescent standar | 2700 | 100 | 1000 | Non-necessary | Yes | 19 |
| Incandescent halogenous | 2900-3100 | 100 | 2000-5000 | Power transformer for low tension | Yes | 25-30 |
| fluorescency | 1700-6500 | 75-98 | 14000-18000 | Necessary | Yes from 10% to 100% | 104 |
| Mercury-vapour | 3500-4200 | 50 | 14000 | Necessary | Yes from 50% to 100% | 60 |
| Metalic-halogenous | 3000-6000 | 65-95 | 6000-12000 | Necessary | Yes from 40% to 100% | 90-100 |
| Sodium-high pressure | 2100 | 20-65 | 18000 | Necessary | Yes from 50% to 100% | 90-150 |
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