The wire gauge is a logarithmic scale base on the cross sectional area of the wire. Awg specifications table maximum amps for turns of wire area 0000 000 00 awg sizes mm mm. Amp standard terminals and splices catalog 82042 dimensions are in millimeters dimensions are shown for usa. Check your local electrical code for the correct current capacity ampacity for mains and in wall wiring. A medida referese a bitola do fio ou a sua area da secao reta. Download pdf version of ampacity chart lapp tannehill.
For those interested in the math note that from ohms law, ohms volts amps. Use this standard wire gauge chart for simple conversions and reference while you work. American wire gauge chart and awg electrical current load. Electric current in amps a to electric power in watts w calculator. American wire gauge chart and awg electrical current load limits. The table below is a guide only and there are many factors such as alloy composition, ambient temperature and airflow which come into play. Calibres, distancias y amperajes ingenieria electrica. Diameter and area values are rounded to fit the nearest awg value. Unit 6 conductor sizing and protection calculations. Stranded wire chart awg awg inchesstranding approx. In the american wire gauge awg system, wire size diameters can be calculated by applying the formula d awg. The power p in watts w is equal to the current i in amps a, times the voltage v in volts v.
When calclating awg from diameter or cross sectional area, the diameter and cross sectional area are rounded to the nearest awg equivalent values. Suggested ampacities for 600 volt inline applications. Table 1 lists the awg sizes for electrical cables conductors. Awg gauges vs current ratings electrical engineering 123. These values are based on allowable ampacities of insulated conductors rated up to and including 2000 volts, not more than three currentcarrying conductors in a raceway, cable, or earth, singleinsulated conductor in free air. Ttt 35mm2 copper wire can take continuous current of 170a on free air and. Allowable ampacities insulated conductors in a raceway. Download as xlsx, pdf, txt or read online from scribd. Wire gauge chart standard awg conversion sigmaaldrich.
You must use the correct size wire for the amperage requirement of the circuit to prevent the wire from over heating. The power p in watts w is equal to the power factor pf times the phase current i in amps a, times the rms voltage. In the example below, the volts and amps cancel ohms leaving feet. The smallest awg size is 40 and the largest is 0000 40. Conductor sizing and protection calculations unit 6 6. Size awg or kcmil copper aluminum or copperclad aluminum size awg or kcmil 18 14. The load current rating and the overcurrent protection for conductor types shall not exceed 15 amperes for 14 awg, 20 amperes for 12 awg, and 30 amperes for 10 awg aluminum and copperclad aluminum after any correction factors for ambient temperature and number of conductors have been applied. American wire gauge conductor size table american wire gauge awg is a standardized wire gauge system for the diameters of round, solid, nonferrous, electrically conducting wire. Awg wire gauges current ratings engineering toolbox.
National electrical code allowable ampacities of insulated. Convert standardized awg american wire gauge sizes to inches in and millimeters mm. The larger the awg number or wire guage, the smaller the physical size of the wire. The short circuit rating is calculated according to p323822007. American wire gauge awg to mm and mm 2 converison calculator, chart and how to convert. Nec 31016 allowable ampacities of insulated conductors b. The cable and wire sizing calculator calculates the required cable or wire size based on current rating and voltage drop according to the american national electricity code nec 2017. This estimate is based on nickfree soft annealed cu wire having a. Microsofts free reader application, or a booksized computer this is used solely as a reading. Corriente 40 c, aire alambres 14 12 10 1 1 1 0,38 0,38 0,51 0, 0, 0, 3 3 4 100 100 100 8,46 5,32 3,34 25 35 60 20 32 50 30 40 55 cables 8 6 4 2 1 10 20 30 40 250. This means that in american wire gauge every 6 gauge decrease gives a doubling of the wire diameter, and every 3. Awg wire size chart and ampacity table for design engineers including. American wire gauge awg is a standardized wire gauge system for the. If you find our mm to awg table valuable, go ahead and bookmark it on your device.
The american boat and yacht council abyc offers the following charts to determine appropriate wire sizes based on the amp load and run length of wire in a given application. The number and type of electrical devices connected to a circuit determine the amperage requirement of the circuit. Guillermo marconi 56707480 b1606byf carapachay pdo. Alambres y cables awg doing what we do better awg wires and cables alambres y cables awg thhnthwn 600 v 1 plain copper tabla conductores y amperaje scribd. Conductor sizes larger than 40 awg are expressed in kcmil thousand circular mils 110. The table below lists the america wire gauge awg using. This means that in american wire gage every 6 gauge decrease gives. Calibre americano awg l equivalencias awg milimetrica c rg conductores rg s. Wire size recommendations voltage drop is a significant issue in marine electric equipment. Tabla comparativa awgmm seccion mm 2 conductor a n x o awg 0,014 0,035 0,047 0,049 0,055 0,078 0,079 0,080 0,093 0,094 0,94 0,110 0,118 0,118 0,125 0,125 0,5 0,140. Size awg or kcmil rating or setting of automatic overcurrent device in circuit ahead of equipment, conduit, etc. Click for a downloadable, printable copy of the wire gauge converter in pdf, or image file format.
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