Ampacities are based on a conductor temperature of 90 c and an ambient air temperature of 40 c. 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. Stage lighting cable entertainment single conductor cable conductor. Calculation of the cable ampacity considers only power cables since control cables. Conductor ampacity calculation part one electrical knowhow. 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. High voltage xlpe cable systems techincal user guide brugg cables page 2. Southwire is proud to announce that our company has achieved a spot on the. Custom cable and custom heat shrink shapes are another of our specialties. Aluminum 600v aerial triplex xlp cable is designed for use to supply power, usually from the pole mounted transformer to the users service entrance.
Etap electrical engineering software offers a comprehensive set of cable current carrying capacity ampacity and sizing modules based on the following standards and guidelines. Gencable type sc stage cable is designed for portable power and lighting applications in the entertainment industry including motion picture, television, theaters, stages and similar locations please note. Other organizations that supply ampacity tables include ieee institute of electrical and electronics engineers, which offers more than 3,000 ampacity tables for extruded dielectric power cables rated through 8 kv and laminar dielectric power cables rated through 500 kv. Conductors are manufactured in accordance with astm and b172. Cablesizer cable sizing calculations to iec and nec standards. Iec 60502 cable capacity calculations for power cables per iec 60502. The aeic cable specifications are builtin to the program. New ampacity calculation and physical subviews in the component editor. Also suitable for mobile and portable electrical equipment. Comparison of finite element analysis to iec60287 for.
There is a 25 foot minimum length required for all by the foot cable purchases. Cymcap provides the option of performing cable ampacity calculations using dc current zero frequency. The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. Gencable type sc stage cable is designed for portable power and lighting applications in the entertainment industry including motion picture, television, theaters, stages and similar locations. This is a 20 awg entertainment cable used in theatre, television, night clubs, motion pictures, mobile communication vans, spotlights and sound systems.
Type cable magnetic field calculation program to model the. This version of internet explorer is either no longer supported by microsoft, or is obsolete and some features of our store may no longer be supported. Nfpa 70 standard cable ampacity software cable sizing. Overview of rules implemented in powertools, including nec and recommended industry standard practices. Enter the information below to calculate the maximum allowable ampacity for currentcarrying conductors. Various methods are in use today including computer simulation, ampacity tables, and a. The software examines cable temperature and ampacity in performing analysis of existing systems. Lighting cable ul type sc csa type ppc 600v product construction conductor. Gencables snake bite stage pin adapters are made with a 100a group 5 stage pin, 16 series cam lok connectors and ul and cul listed stage cable sc. Programs utilize values of cable constituent thermal. Type sc entertainment cable cut by the foot gencable.
These extensions allow for high wattage 220 vac motion picture lights to be plugged into camtype distribution. Nec rules on overcurrent protection for equipment and. Generic wire and cables type sc cable entertainment and stage lighting, type sc stage thermoset rubber cord products have evolved over the last 50 years from simple and unsophisticate. Maximum operating conductor temperature for our xlp cross linked polyethylene insulation is not to exceed 90c in wet and dry locations. The nec standard does not provide cable ampacity derating due to bottom cover or correction of the cable ampacity multiplying factors due to the cumulative effects of combinations of. Customizable imprint all cable sizes and custom surface print options are also available. Amps nec table 4005 b for 90c outdoor csa type ppc 105c 600 volt ft5 rohs made in usa applications. Determining the maximum current power cables can sustain without deterioration of any of their electrical properties is important for the design of. Sep 26, 2016 a sample of nec ampacity rating tables. The above data is approximate and subject to normal manufacturing tolerances. This authoritative collaboration by iee and mcgrawhill, provides the standard computations and information needed to calculate electric cable ratings. See our innovative products in action and how they can help make your job easier.
The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. The ampacity of underground power cable lines is limited by the maximal allowable temperature of the conductor. Underground cable ampacity is difficult to estimate because. Cable ampacity calculator electrical engineering portal. The cymcap software is dedicated to the calculation of ampacity and temperature rise. Practical power cable ampacity analysis velimir lackovic, mscee, p. When designing electrical power systems, it is often necessary to determine underground cable ampacity. Conductors soft annealed stranded tinned copper per astm b 33. Type p power cables gexol marine cable houston wire. Please call for pricing on long barrel lugs stage lighting cable is a single conductor power cord cable used in the theater industry for superior lighting. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the. A polyester tape separator is used over the conductor.
The nec standard does not provide cable ampacity derating due to bottom cover or correction of the cable ampacity multiplying factors due to the cumulative effects of combinations of tray covers and fireproofing. The trick is selecting the correct overcurrent protection for a. Type sc cable is abrasion and heat resistant, and the cam lock connectors are nema 3r when connected. What is wire ampacity and how do you find ampacity rating. Currentcarrying conductors in raceway, cable, or earth directly buried, based on ambient temperature of 30 c 86 f. Crosslinked polyethylene commercial southwire southwires commercial team focus on store, hotel, office, casino, ar. Weight price mtw18bk black 18 awg type mtw copper wire, 16 strands, 600 volts 500 4. Ampacities are based on an ambient temperature of 40 c and a conductor temperature of 90 c taken from. The cable ampacity analysis software applies to cables in above ground trays, conduits, and air drop. Power used cyme internationals cable ampacity program cap to model. Overcurrent devices protect conductors and equipment from overcurrent.
Rating c neoprene 30 90 hypalon 30 105 epdm 60 150. Allowable ampacity shown above is per the 2005 national electrical code. Usamp prime insulated cable ampacity software models all types of underground power cables pipetype, extruded, and solid paper. 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. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the cable ampacities. The advanced wire ampacity calculator will calculate the maximum ampacity for a wire based on wire gauge, preferred or available wire insulation, conductor type and installation specifications. These cables are designed for offshore and onshore environments, and most commonly used in drilling rig applications. Ampacities are based on single isolated cable in air operated with opencircuited shield. Mtw conductor ampacity based on cooper conductors with 60c and 75c as specified by nfpa79. When selecting a cable, one must know its wire ampacity rating. Cable ampacity software cable sizing software cable derating. Welding cable ampacity tables assume a duty cycle and a length, in a continuous application they have the exact same ampacity as building wire types of the same size. Ati distributes type sc cam lock extensions manufactured by power assemblies.
This software was developed jointly by ontario hydro hydro one, mcmaster university and cyme international, under the auspices of the canadian electricity association. Use of computer programs for calculation of underground cable ampacity software programs usually use neher mcgrath method for the calculation of the cable ampacity. Ampacity and other design considerations for medium voltage cables used in renewable energy applications earle c. The cable ampacities tabulated for this paper were calculated with cymcap version 3. Conductor ampacity calculation part seven electrical. Engineers are often called upon to calculate ampacity and temperature rise of. Cyme power engineering software and solutions power cable. Most cable manufacturers provide ampacity tables on their websites. The trick is selecting the correct overcurrent protection for a specific circuit. Cable ampacity tables for direct current traction power. It has nothing to do with the flexibility, ive seen a lot of people make this mistake and quote skin effect, which is nonsense at 60hz. At present, numerous high voltage xlpe cable systems with nominal voltages up to 500 kv and. Products southwire is one of the worlds leading manufacturers of wire and cable, tools, components and assembled solutions. Other types of single conductor power cables are welding cable, dlo cable and type w cable.
This calculator also provides wire size correction factors for temperature, number of conductors in a raceway, and voltage drop for long wire runs. Southwire is an active participant in industry trade shows and events. These contain the data utilized for the cable ampacity program. Number of conductors percentage 4 thru 6 80% 7 thru 9 70% 10 thru 20 50% 21 thru 30 45% 31 thru 40 40% 41 and above 35% insulation minimum temp. Cable design form to scale input of cable designs is facilitated by a cable expert system. Overcurrent exists when current exceeds the rating of equipment or the ampacity of a conductor.
Type w portable power cable is suitable for use in industrial and lighttomedium mining applications, heavyduty service, temporary power supply cables, motor, battery and generator leads. Ampacity and other design considerations for medium. Providing you the information and recommendations for southwire products. Lead wire reference chart poster electrical cable supply.
High voltage xlpe cable systems technical user guide. Type mtw wire part number color gauge description spoolreel length approx. Type w portable power cable is suitable for use in industrial and lighttomedium mining applications, heavyduty service, temporary power supply cables, motor, battery and. Introduction cable network usually forms a backbone of the power system. Use of and creating library models for physical cables and ducts. The validation of the results obtained with the cymcap software provides increased confidence when upgrading existing power cable installations. The type of cable insulation nominal and maximum operating voltage. Conductorcable terms, conductorcable insulation materials terms, conductorcable tests terms, conductorcable manufacturing process terms. The user inputs basic parameters cable type, insulation type, voltage rating and conductor area. Entertainment cable, stage lighting cables, type sc single.
Detailed graphical representation of virtually any type of power cable. This rating has been determined by the nec national electrical code, which lists ampacity ratings for reallife installation examples. Determining the maximum current power cables can sustain without deterioration of any of their electrical properties is important for the design of electrical installations. The cymcap software is dedicated to performing ampacity and temperature rise calculations for power cable installations.
When multiple cable lines are arranged close together, it is. Each type has different awg sizes, voltages and temperature ranges to fit each type of installation. For electrical engineers and other specialists working with electric power cables, this reference provides direct access to essential data including. Cable ampacity software cable sizing software cable. The values amperes shown are maximums at an ambient or room temperature of 30c 86f. Normally the iec 60287 standard 1 is used for static ampacity calculation. The development of high voltage xlpe cable systems goes back to the since then production and material technology have improved significantly, providing reliable and maintenancefree products to the utility industry. 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. Welding cable or dlo used as feeder circuit in conduit. Other types of single conductor power cables are welding cable, dlo cable and type w. Ampacity and other design considerations for medium voltage.
Practical power cable ampacity analysis ced engineering. Cable ampacity power system software and arc flash. This is a 4 awg entertainment cable used in theatre, television, night clubs, motion pictures, mobile communication vans, spotlights and sound systems. Home download center electrical software cable ampacity calculator description this is digital version of the most frequently used ampacity tables that you would find in electrical codes canadas cec and u. They consider only temperature limited, current carrying capacity of cables. Southwires romex simpull type nmb nonmetallic sheathed cable may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90c with ampacity limited to that for 60c conductors as specified in the national electrical code1. This can be due to an overload, short circuit, or ground fault art. The standard employs the concept of thermal equivalent circuit 2. The wire ampacity calculator will quickly calculate the maximum allowable current through a conductor based on wire size awg or kcmil, wire insulation, conductor type and installation method. For example, a 10 awg 4c 600 v cables ampacity would need to be derated by 80 percent according to nec 2014 table 310.
45 934 1417 1262 440 1063 928 450 577 447 545 1361 1481 993 832 1050 1306 624 136 1094 720 126 1193 805 1303 123 320 394 296 965 1423 300 1157 1231