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A guide to some common standards and classifications encountered in engineering.
| Approval Bodies and Commissions | |
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| Standard Component Values | |
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BS 2488, IEC pub 63 |
| IP ratings | |
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BS 5420:1977, BS 5490:1977, IEC 144:1963, IEC 529:1976 |
| Insulation Groups | |
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VDE 0110 |
| Flammability Classifications | |
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UL 94 |
| Utilisation Categories for Contactors | |
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IEC 947-4 |
| Cable Sizes for Building Installation | |
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