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2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   FMT is a raceway, but not a conduit and is described in a separate NEC Article 360. It only comes in 1/2" & 3/4" trade sizes, whereas FMC is sized 1/2" ~ 4" trade sizes. NEC 360.2 describes it as: "A raceway that is circular in cross section, flexible, metallic and liquidtight without a nonmetallic jacket."

3. Compression fitting - Wikipedia

   en.wikipedia.org/wiki/Compression_fitting

   A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect

4. Industrial and multiphase power plugs and sockets - Wikipedia

   en.wikipedia.org/wiki/Industrial_and_multiphase...

   Semko 17 were 3/4-pin 3-phase connectors, with (4-pin) or without (3-pin) a neutral connector. Earth were provided via the shield. The connectors were available in different sizes, 16 A with rounded corners; 25 A and 63 A were rectangular. These connectors were used mainly in industrial and agricultural installations.

5. Electrical wiring in North America - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring_in_North...

   [1] Hot is any line or neutral conductor (wire or otherwise) connected with an electrical system that has electric potential relative to electrical ground or line to neutral. Ground is a safety conductor with a low impedance path to earth. It is often called the "ground wire," or safety ground. It is either bare or has green insulation. [1]

6. NEMA connector - Wikipedia

   en.wikipedia.org/wiki/NEMA_connector

   All NEMA 5 devices are three-wire grounding devices (hot–neutral–ground) rated for 125 V maximum, with the 5-15, 5-20 and 5-30 being grounded versions of the 1-15, 1-20 and 1-30, respectively. The addition is a 3 ⁄ 16-inch (4.8 mm) diameter round or U-shaped ground pin, 1 ⁄ 8 in (3.2 mm) longer than the power blades (so the device is ...

7. Air-line fitting - Wikipedia

   en.wikipedia.org/wiki/Air-line_fitting

   Tru-Flate/Automotive 3/8" 10 P US Industrial 3/8" 8.2/8.5 A-A-59439, ISO 6150B 030 430 30 20/30 H US Industrial 3/8" HP 8 ISO 6150C 170.08 381 84 ARO 310 9 014.09 40 AA Scandinavian 9.5/10 9.5/10 032.10 408 32/1800 Eurostandard 10 10 027 410 27 Schrader 1/2" 017.10 TL US Industrial 1/2" 11 A-A-59439, ISO 6150B 037 550 37 20/30 G