Dlo allowable ampacity chart 90c copper conductor temperature awg. It is designed for contractors, electricians, and other electrical. Type mtw wire part number color gauge description spoolreel length approx. Pdf cable ampacity calculation and analysis for power. Southwire simpull ct1et type mv105 cable is for use in 350 kcmil ampacity armoured cable.
Singlephase voltages are usually 115v or 120v, while threephase voltages are typically 208v, 230v or 480v. Wire size is usually identified as the area of the conductor in square millimeters. Cyme power engineering software and solutions power cable. Temperature ratings depend on the heat resistance of the materials used for the insulation and jacket of the cable. Type p drilmartm 125xe powerdistribution cable ampacity.
The primary purpose of the ampacity calculations was to detennine a minimum conductor size and cable system configuration based on the design requirements provided by xcel energy. Cable sizing and its effect on thermal and ampacity. Cable ampacity software cable sizing software cable. Again, ampacity ratings are based upon ambient temperatures. Cable sizing, duct bank, ampacity, underground power. Subject 3827 recalculated underground ampacity tables. Allowable ampacities for 79 conductors in raceway, cable or earth. Cyme power engineering software and solutions calculate ampacity and temperature rise of power cable installations the cymcap software is dedicated to performing ampacity and temperature rise calculations for power cable installations. Cable ampacity calculator electrical engineering portal. Cablesizer is an automated cable sizing and design calculation tool to iec and nec standards. The ampacity of a cable should equal or exceed the maximum current the cable will be expected to carry during its service life, without exceeding its temperature rating. Voltage enter the voltage at the source of the circuit. For use in transit carrailroad wiring, electricdiesel. Copper conductors primarily used when more ampacity is needed andor there are limitations to the.
Designed to meet iec 600923 and apirp14f specifications. General cable conductor ampacity calculator for ios free. The cymcap software is dedicated to the calculation of ampacity and temperature rise calculations for power cable installations. The accuracy of the calculation provides increased confidence. Cable network usually forms a backbone of the power system. Determining the maximum current power cables can sustain without deterioration of any of their electrical.
As a cable ampacity analysis application, etap engineering software determines the cable current capability based on ieee, iec, icea, nec nfpa, bs, and. The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. Cec ampacity interpretations subject to users local authority having jurisdiction. Dlo is especially suitable to supply power to traction motors of dieselelectric locomotives.
The above data is approximate and subject to normal manufacturing tolerances. Cablesizer cable sizing calculations to iec and nec. For ambient temperatures other than 78f 86f, or more than three currentcarrying conductors in a raceway, cable or earth, use the advanced wire ampacity calculator. Wire size choose the size awg or kcmil of the wire for which to calculate the maximum allowable ampacity based on the conditions chosen above in the calculator phases select the number of phases in the circuit. Computes steadystate and transient ampacities and temperatures for multiple cables with equal or unequal loading. Support structure conduit three conductor cable ampacity tablets. For 40 awg, 262 mcm and 3 mcm conductor, center one piece of heatshrink over the 514 inch mark on the conductor and shrinkadhere it.
Cable systems etap cable systems help engineers design cable systems to operate to their maximum potential while providing secure and reliable operation. Allowable ampacities of insulated conductors rated 02000 volts as excerpted from the 2002 national electrical code ampacities of not more than three currentcarrying conductors in raceway, cable or earth. Comparison of finite element analysis to iec60287 for. High voltage xlpe cable systems techincal user guide brugg cables page 2 content 1. Ampacities are based on single isolated cable in air operated with opencircuited shield. General 357120 polyrad cable with tinned copper conductors.
From the table above the ampacity difference between two cable sizes is 60amperes. Home download center electrical software cable ampacity calculator. Cable ampacity, buried cable, finite element analysis, multiphysics, magnetic shielding, proximity effect, cable duct bank i. The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. Cable ampacity calculation and analysis for power flow optimization. Use of computer programs for calculation of underground cable ampacity software programs usually use neher mcgrath method for the calculation of the cable ampacity. Diesel locomotive dlo cables 262 mcm motor lead wire products supply. The software examines cable temperature and ampacity in performing analysis of existing systems. Suggested ampacities all types of insulations copper aluminum not more than 3 conductors in raceway or cable single conductor in free air not more than 3 conductors in raceway or cable single conductor in free air awg or mcm conductor temperature rating conductor temperature ratings 8590c temp 185f 110c temp 230f 8590c temp 185f 110c. Theses rating is limited to 2000 volts only at 90 deg c max.
Type p marine and offshore cable is primarily designed for power, control, signal, and instrumentation applications for offshore and land drilling rigs, marine vessels, and offshore production facilities. Southwire, an industry leader in wire and cable solutions, and go industries, dba longhorn reels, a texasbased company that manufactures wire and cable solutions, have resolved pending litigation. The previous ampacity of 285 a for 300 kcmil 152 mm2 must be derated as follows. Allowable ampacity shown above is per the 2005 national electrical code. Ampacity or current carrying capacity is determined by the cross sectional area and composition of the conductor, the ambient temperature and the maximum allowable increase in temperature of the insulation. Cable systems cable ampacity software cable sizing. Practical power cable ampacity analysis ced engineering. If grouped or bundled or enclosed, the amps running through a cable must be decreased to ensure heat dissipation. Allowable ampacities of single conductor in free air allowable ampacities for not more than three conductors in raceway, cable or earth. High voltage xlpe cable systems technical user guide. Engineering data for copper and aluminum conductor. National electrical code allowable ampacities of insulated. Canadian electrical code, part i full impact assessment technical. If the heat exceeds the cables rating, the cable could fail, even possibly catching fire.
Usamp prime software models all types of underground power cables pipetype, extruded, and solid paper. It is also recommended as a portable cable for drilling rigs, onshore or offshore, railroad and transit car wiring, electric earthmoving equipment, in shipyard applications, arc welder supply leads, power and control jumper cable, telcom power supply and motor leads. Lead wire reference chart poster electrical cable supply. Ampacity is the amount of current a conductor can handle before its temperature. Additional installation instructions for the rmpii plugs sized for 40 awg, 262 mcm and 3 mcm cable.
Allowable ampacities for 46 conductors in raceway, cable or earth. In this case the 5% adjustment of rule 81061 cannot be applied. Cymcap software 4, and coupled ac magnetic and thermal. Wire and cable with wide range of world wide approvals. Practical power cable ampacity analysis cedengineering. Sizes 250 through 500 kcmil available with thin wall 0. Review study options to learn how they affect study results.
The ampacity ratings of the cables are based on cec table 2 2012. Cme wire and cable 495 horizon drive ne, suite 100, suwanee, georgia 30024. Software programs are commercially available that can perform sophisticated modeling of. Review software interface on how to navigate the software effectively. The accuracy of the software provides increased confidence when upgrading power cable installations and designing new ones. General cables ampacity calculator is a quick and easy tool to get conductor ampacities for different temperature ratings. Also suitable for electricallydriven earthmoving equipment, waterheater leads, power. Overhead line ampacity ampacity ampere capacity limitation maximal permitted operational conductor temperature. Southwire recognized on top employer list for 2020.
As a cable ampacity analysis application, etap engineering software determines the cable current capability based on ieee, iec, icea, nec nfpa, bs, and nfc standards. Under the same conditions, a 10 american wire gauge awg conductor is rated for 170 amps, with a circular mil area of 105. Portable or fixed power cable for use in drilling rigs, dieselelectric locomotives, railroad and transit car wiring, where reliability is a prime concern. Engineering data for copper and aluminum conductor electrical cables. Awg cross reference wire sizing chart go back awg cross reference wire sizing chart. Cable ampacity software cable sizing software cable derating. To avoid this damaging occurrence, heat must be dissipated outside the cable. Whether you need bare copper, copperweld, thwn, thhn, thw, xhhw, xlp, epr, cpe, neoprene, or rhw 600v, 5kv, 15kv, 25kv, or 35kv, or a specialized construction we are ready to help. Awg wire chart, aught, mcm kcmil, us inch, and awg cross reference wire sizing chart.