Building wiring

Building Wires. These wires conduct electricity at relatively low voltages (eg, 110 V and 220 V). Typically they contain a metallic conductor (copper or aluminum) that is insulated with polymeric compounds based on polyethylene or PVC which are appHed over a conductor using an extmder. 

Building wire, including low voltage power and communication networks... 

FR polyolefins find application in building wires, industrial control cables, automotive primary wire, and data cables. Specifications for thermoplastic building wire are found in UL-83 Thermoplastic-Insulated Wires and Cables for temperature ratings of 75°C and 90°C in wet and dry environments.51 Specification for industrial control cables are found in UL-44... 

PolvCvinvl chloride). The application of poly(vinyl chloride) as wire and cable insulation occurred after the development of flexible formulations in the mid-1930s. Typical compositions for insulation purposes contain from 50 to 70% poly(vinyl chloride) the remainder is plasticizers, fillers, lubricants, and stabilizers. These formulations provide a combination of attractive features such as good mechanical properties, resistance to oil and moisture, and low flammability. Its main applications are in building wire for connection of outlets and switches with main panels, in equipment and apparatus cables, and in 1ow-temperature electronic applications it is also found in flexible and retractable cords, in telephone wires, and in power cables. 

Copper is used extensively for its high thermal and electrical conductivity and corrosion resistance. In the United States, the most predominant of thousands of copper and copper alloy applications include building construction (largely sheet, tube, building wire, and hardware), 45 percent electrical and electronic products, 26 percent transportation equipment, 9 percent industrial machinery and equipment, 10 percent and consumer products, 10 percent, see also Electrochemistry. 

Metallic copper end uses include electrical (70%), construction (15%), machinery (6%), transportation (4%), and ordinance (2%). The top domestic markets for copper and its alloys in 1986 were, in order of importance, plumbing, building wire, telecommunications, power utilities, in-plant equipment, air conditioning, automotive electrical. 

PVC building wire, similar uses as for bromine and chlorine compounds TV cabinetry, power tools, kitchen appliances... 

The present invention relates to an electric cable with increased flexibility, peeling-olf properties, and increased intelligibility of the marked indicia. The electric cable is designed for power transmission at low voltage, suitable for building wiring. 

ExxonMobil formulas for building wire. [DatafromCoaker,A. W.,J. vinyl Additive... 

Concealed. Rendered inaccessible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them. [See Accessible. (As applied to wiring methods.) ]... 

The above-mentioned stabilizers are useful not only for building wire jackets but also in flexible cord and communications wire insulations that is, in applications not having severe wet electrical testing requirements. The use of ESO or a liquid organo-phosphite may or may not be useful with a particular stabilizer the supplier s literature should be consulted. For NM-B insulation, which requires insulation resistance to level off during 6 months in water at 75 °C, Ca/Zn stabilizers must be based on hydrotalcite rather than zeolite. A typical starting point formulation comprises the following ... 

In building wire for direct burial (UL Type UF), it is suggested that a water-resistant lead replacement stabilizer be used also in the jacket, whether or not so required by specifications. Similarly, in so-called double-insulated cords, both insulation and jacket should be water-resistant. 

Automotive Upholstery Waterstop Building Wire Refrigerator Gasket Floor Tile... 

The impact of phthalate blending and choice of plasticizer type on the retained elongation is shown in Fig. 7.4, recorded for the following typical 105 °C building wire insulation formulation ... 

PVC jackets and insulations for unjacketed constructions that are printed often contain 0.1 -0.3 phr of OPE wax. It is feasible, however, to print such constmctions without this additive through judicious choice of ink. When OPE wax is used, and stearic acid content reduced or eliminated, the surface is more readily wet by the nylon coating that is dual-extruded over building wires such as Underwriters Laboratories Type THHN. This permits higher line speeds, with a lower incidence of rejection. 

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