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2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   It is a new type of plastic wire conduit in the industry. Compared with PVC electrical conduit, it has three advantages. ... (RGS) conduit, 3/4 inch (21 metric) size ...

3. National Electrical Code - Wikipedia

   en.wikipedia.org/wiki/National_Electrical_Code

   A full-load wire does heat up slightly due to the metallic resistance of the wire, but this wire heating is factored into the cable's temperature rating. (NEC 310.10) [12] The NEC specifies acceptable numbers of conductors in crowded areas such as inside conduit, referred to as the fill rating.

4. Electrical wiring in North America - Wikipedia

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

   With lamp cord wire the ribbed wire is the neutral, and the smooth wire is the hot. NEC 2008 400.22(f) allows surface marking with ridged, grooves or white stripes on the surface of lamp cord. NEC 2008 400.22(f) allows surface marking with ridged, grooves or white stripes on the surface of lamp cord.

5. Electrical conductor - Wikipedia

   en.wikipedia.org/wiki/Electrical_conductor

   [4] Aluminum wire is the most common metal in electric power transmission and distribution. Although only 61% of the conductivity of copper by cross-sectional area ...

6. Split-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Split-phase_electric_power

   A neutral wire can be shared only by two circuits fed from opposite lines of the supply system, using circuit breakers connected by a bar so that both trip simultaneously ([4] NEC 210.4); this prevents 120 V from feeding across 240 V circuits.

7. Service drop - Wikipedia

   en.wikipedia.org/wiki/Service_drop

   A 240/120 V split-phase service drop providing power to a residence in USA. The three wires from the utility pole enter through a weatherhead (top) into a vertical conduit, which routes them to the electric meter (bottom). From there they pass through the wall of the house to the electric panel and Main Fuses or Circuit Breakers inside.

8. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   [4] [5] These practices were found to cause defective connections and fire hazards. In the early 1970s new aluminium wire made from one of several special alloys was introduced, and all devices – breakers, switches, receptacles, splice connectors, wire nuts, etc. — were specially designed for the purpose. These newer aluminium wires and ...

9. Thermoplastic-sheathed cable - Wikipedia

   en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

   This does not include the uninsulated ground wire. For instance, if the cable lists "12-2 AWG", it means there are two insulated 12-gauge wires (a black and a white wire), plus a ground wire. If the label says "12-3", this cable has four conductors—three 12-gauge insulated wires and a bare copper ground wire. [5]