enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   An electrical conduit is a tube used to protect and route electrical wiring in a building or structure. Electrical conduit may be made of metal, plastic, fiber, or fired clay. Most conduit is rigid, but flexible conduit is used for some purposes. Conduit is generally installed by electricians at the site of installation of electrical equipment.

3. Conduit current collection - Wikipedia

   en.wikipedia.org/wiki/Conduit_current_collection

   Conduit for current collection between the rails of streetcars in Washington, D.C., 1939. Washington installed the system in 1895 [1] and it remained in operation until 1962 [2] Conduit current collection is an obsolete system that was used by some electric tramways to pass current to

4. Orangeburg pipe - Wikipedia

   en.wikipedia.org/wiki/Orangeburg_pipe

   The first known use of any fiber pipe was in an experimental water delivery line in the Boston, Massachusetts, area. The pipeline, finished in 1867, measured 1.5 miles in length and was in use through 1927. Bituminized pipe was not in widespread commercial use until the late 19th century when it was used exclusively as electrical conduit. [1]

5. Utility location - Wikipedia

   en.wikipedia.org/wiki/Utility_location

   Location by these technical means is necessary because maps often lack the pinpoint precision needed to ensure proper clearance. In older cities, it is especially a problem since maps may be very inaccurate, or may be missing entirely. A few utilities are permanently marked with short posts or bollards, mainly for lines carrying petroleum ...

6. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   Electrical panels, cables and firestops in an electrical service room at a paper mill in Ontario, Canada. Electrical panels are easily accessible junction boxes used to reroute and switch electrical services. The term is often used to refer to circuit breaker panels or fuseboxes. Local codes can specify physical clearance around the panels ...

7. Utility tunnel - Wikipedia

   en.wikipedia.org/wiki/Utility_tunnel

   Portions of the Chicago Tunnel Company's abandoned network of tunnels are leased to utility companies for use as common utility ducts for electrical, communication and HVAC lines. The tunnels lie approximately forty feet below the street surface and run under all streets in the central business district , except where they were displaced by ...