Tabulka 1
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| Třída energetické účinnosti | Index energetické účinnosti |
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| A | E1 < 0,64 |
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| B | 0,64 ≤ E1 < 0,76 |
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| C | 0,76 ≤ E1 < 0,88 |
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| D | 0,88 ≤ E1 < 1,00 |
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| E | 1,00 ≤ E1 < 1,12 |
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| F | 1,12 ≤ E1 < 1,24 |
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| G | E1 ≥ 1,24 |
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2. Třída účinnosti mytí myčky nádobí se stanovuje v souladu s tabulkou 2: