| LV |
Low Voltage - Normally used to refer to up to 1000 volts |
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| HV |
High Voltage - Normally refers to up to 11,000 volts |
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| EHV |
Extra High Voltage - Normally refers to up to 33,000 volts |
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| DNO |
Distribution Network Operator - The company that operates the cables and switchgear that enables transmission of the electricity supply to the final consumer, such as EDF, Central Networks, CE Electric etc |
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| REC |
Regional Electricity Company - The older reference to the regional companies, such as Yorshire Electricity, East Midlands Electricity, Sothern Electric etc |
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| Contestable Works |
That part of the works that can be carried out by a customer other than the DNO, such as installation of on-site switchgear and cables. |
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| Non-Contestable Works |
That part of new connection works that can only be carried out by the DNO, such as final connecton to their live network. |
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| Supplier |
The actual supplier of electricity, such as Powergen, British Gas etc |
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| SAP |
Senior Authorised Person - An individual authorised to carry out HV switching operations and issue of Safety Documentation to release HV apparatus for safe working. May also be a Local Control Engineer |
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| AP |
Authorised Person - An individual authorised to carry out HV and/or LV switching operations.
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| CP |
Competent Person - An individual authorised for access to DNO substations and may also be authorised for receipt of Safety Documents and/or taking charge of a Working Party. |
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