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2. List of high-voltage underground and submarine cables

   en.wikipedia.org/wiki/List_of_high-voltage...

   London, Beddington Cable Tunnel,(Beddington – Rowdown) 400 kV 51.36594°N 0.12324°W ; 51.34789°N 0.00954°W London, Hertfordshire, Elstree to St. John's Wood Deep Cable Tunnel: 20 2005 400 kV 51.52666°N 0.16488°W ; 51.65512°N 0.32714°W London, West Ham – Hackney (Lower Lea Valley Cable Tunnel) 6.3 2008 400 kV

3. Submarine power cable - Wikipedia

   en.wikipedia.org/wiki/Submarine_power_cable

   Maximum depth 1000m. Total cost 380 million EUR. It is the longest submarine/underground AC cable interconnection in the world. [6] [7] [8] Mainland British Columbia to Gulf Islands Galiano Island, Parker Island, and Saltspring Island thence to North Cowichan: Vancouver Island: 138: 33: 1956 "The cable became operational on 25 September 1956" [9]

4. Underground power line - Wikipedia

   en.wikipedia.org/wiki/Underground_power_line

   Underground cables need a narrower surrounding strip of about 1–10 meters to install (up to 30 m for 400 kV cables during construction), whereas an overhead line requires a surrounding strip of about 20–200 meters wide to be kept permanently clear for safety, maintenance, and repair.

5. Thermoplastic-sheathed cable - Wikipedia

   en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

   White: 14 AWG wire (2.08 mm 2) for 15-amp circuits Yellow: 12 AWG wire (3.31 mm 2) for 20-amp circuits Orange: 10 AWG wire (5.26 mm 2) for 30-amp circuits Black: 6 or 8 AWG wire (13.3 mm 2 or 8.37 mm 2) for 60- and 45-amp circuits, respectively Grey: usage for underground installations, designated as "underground feeder" (UF) cables [4]

6. High-voltage cable - Wikipedia

   en.wikipedia.org/wiki/High-voltage_cable

   High voltage is defined as any voltage over 1000 volts. [3] Those of 2 to 33 kV are usually called medium voltage cables, those over 50 kV high voltage cables.. Modern HV cables have a simple design consisting of a few parts: the conductor, the conductor shield, the insulation, the insulation shield, the metallic shield, and the jacket.

7. IEC 60228 - Wikipedia

   en.wikipedia.org/wiki/IEC_60228

   Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight ...