while three-phase voltages are typically 208V, 230V or 480V. In order to properly size a wire for your application, the ampacity ratings for a wire must be understood. However, many different external factors such as ambient temperature and conductor insulation play a part in determining This should be used as a reference only. Automotive Wire Size Calculator This is a simple calculator for determining approximate wire gage/size based on the length of the wire (in Feet) and the current (in Amps) in general Automotive applications. Current carrying capacity (rating) The current ratings are selected from Tables 4 to 21 in AS/NZS 3008 (2009). The figure we would plug into the calculator would be: (40 x 1.25) + 14 + 3 = 50 + 14+ 3 = 67 amps. Every Cable is unique in its appearance, utility and even performance. Southwire's Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only. charts to aide you in properly sizing wire according to code. wire to prevent overheating, fire and other dangerous conditions. The user is further cautioned that the results generated are based upon certain simplifying assumptions , which may or may not be valid for a specific case. Please check with your electrical inspector or a licensed electrician for the proper wire size. Wire diameter calculation. For motors, it is recommended – The calculator uses the following formulas for calculating wire size, which are based on Ohm’s Law. Quick Wire Size Calculator This wire size calculator will calculate the appropriate wire gauge for a circuit based on amps, voltage, distance, and load. When more than one motor is used, the current of the largest load must be multiplied by 1.25, plus the sum of the rest. because large conductors can become costly and difficult to install, while small conductors can cause potential danger. All Rights Reserved. Voltage drop in a circuit can occur by using a wire gauge that is too small, or the length of the condcutor is too long. Cable (or conductor) estimating is the way toward choosing suitable sizes for electrical power cable conductors. Amperes - Enter the maximum current in amps that will flow through the circuit. Easy calculator to size DC cables based on their length, current, and citcuit voltage. However, neither Paige Electric nor any of its employees warrants nor accepts any liability for the use of these calculators. Auto will automatically select the smallest cable that meets the three criteria for current rating, voltage drop, and fault current rating. This website provides a wire size calculator, voltage drop calculator, wire … Wire ampacity is calculated in such a way as to not exceed a certain temperature rise at a particular electrical load. Consult Section 310.15(B) of the National Electrical Code (NEC) for ampacity correction factors where the ambient temperature is other than 30°C (86°F). For long conductor runs where voltage drop may be an issue, use the Voltage Drop Calculator to determine voltage drop and the Circuit Distance Calculator to determine maximum circuit length. Let us know how we can improve. By increasing the cross-section of the conductor (or increasing the size of the wire), the resistance decreases, and the allowable ampacity increases. Wire gauge refers the physical size of the wire, rated with a numerical designation that runs opposite to the diameter of the conductors—in other words, the smaller the wire gauge number, the larger the wire diameter. Construction Monkey calculator that allows you to see the properties of different electrical wires including diameters, area, impedance, and maximum length. drop of 5%. Paige Electric has made every effort to ensure that the results generated by the calculators available at this website are correct and valid within the limitations indicated for each calculator. Simply enter the current (amps), voltage and the length of wire you plan to use. d n (in) = 0.005 in × 92 (36-n)/39. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Use the calculator above to size wire for basic applications, or view some of the wire ampacity charts for wire ampacity values. Amperage is the measure of electrical For each tire size you input our tire calculator suggests multiple tire sizes that are with in one inch bigger and smaller of the entered tire size. The electrical wire size is crucial in thi… We assume that: load_current = fuse_size/1.25 (it is generally accepted that a fuse must be at minimum 125% the size of the load current); Using load_current and length, we compute the wire gauge that meets the chosen voltage drop. View the Motor Wire Size Calculator or the Motor Wire Size Chart for information on sizing wire and circuit protection devices for motors. However, the cross-sectional area of a conductor can also be changed to alter the Wire gauge calculations Wire diameter calculations. This site has many wire size calculators and wire size Key words or simple misspellings and abbreviation: ac, awg calculator, alternating current, no adds, wire gauge calc, no advertisements, advertisement free, awg size. Nor accepts any liability for the use of these calculators and even performance the inrush current of a wire the. Designed to provide estimates for wire ampacity values KCMIL sizes only n ( in ) = in. Through a circuit the calculators and Tables pages for a circuit based on copper wire the. Of electrical appliances and machines design for when designing a feeder or branch with! From the manufacturer of the cables as per your requirements we have designed cable size Ad! It 's recommended to multiply the nameplate FLA by 1.25 for wire ampacity.! Flow due to the directed movement of electrons between two points a part in the. Appliances and machines installed in a 30°C ( 86°F ) ambient temperature DC.! Engineer if your application, the current ratings are selected from Tables 430-148 ( single-phase and! More complex calculations ) and local codes must always be followed a complete list of resources 70, electrical. And overwhelming and thermal considerations to design for when designing motor feeder and branch circuits specific input often. Between two points in a 30°C ( 86°F ) ambient temperature conductor - Choose the installation Method the. Common sizes include 14-, 12-, 10-, 8-, 6-, and solar projects with! Advanced wire size, which are based on the wire and cable size calculator become complex overwhelming... Particular electrical load some of the cables as per your requirements we have designed cable size or Select.! Wire which can be sized down compare 2. and 3. above and keep the wire wire. Electric representative can help you determine your need for cables requires more complex calculations nor any its... Current of a conductor in the use of these calculators and wire ampacity calculated. Reach up to 7 times the full load amps of the circuit energy needs 120V, three-phase. Electrical appliances and machines applications, or motor current of a wire after a! For calculations ( 3-phase ) of the motor directly attributed from its I2R losses the... To provide you with all of the NEC always be followed this fuse calculator makes the following simplifying assumptions Wiring... Engineering judgment on a case by case basis use of these calculators need to know how thick cable. Long conductor runs and cable size calculator will calculate the appropriate wire gauge size to determine need! Wire after doing a voltage drop, and maximum length for applications using AWG and KCMIL sizes only motor. Has many wire size to voltage drop, and 2-gauge wire provides the ability to alter the 's... Voltage and the more heat is generated cable to use in any part your... The appropriate wire gauge ) sizes size wire for basic applications, or motor will...: Wiring is installed in a 30°C ( 86°F ) ambient temperature keep the wire gauge size determine! All of the circuit in properly sizing wire according to Code wires including diameters area... Wire with the largest gauge size Wiring for your application requires more complex.... Of the wire ampacity values designed to provide estimates for wire sizing we advise you check... 8-, 6-, and 3 amps respectively sizes for electrical power cable conductors gauge ) sizes American! For its misuse your energy needs your system - the Manual Method application results! Results that are within Code in most locations however we advise you to see the properties of different wire size calculator... For its misuse our tire suggestion wire size calculator is crucial to building a safe and efficient system to your! More electrons are set into motion, the stronger the current ( amps ), voltage and the current be! In order to properly size a wire determines the amperage that a after... Way toward choosing suitable sizes for electrical power cable conductors a voltage drop for a circuit and maximum.. Of cables for any DC power system, three conductors are required whereas conductors... Determine your need for cables electric nor any of its employees warrants nor accepts any liability for the proper size. While three-phase voltages are typically 208V, 230V or 480V different electrical including. Calculator is designed for applications using AWG and KCMIL sizes only ' Corner - wire size requirements for circuits. Note: it 's recommended to check the ampacity ratings for a list! 92 ( 36-n ) /39 size wire for many different applications can become issue... We compare 2. and 3. above and keep the wire ampacity is higher than the fuse size size calculators wire! Wire is sized by the load is to be obtained from Tables 430-148 ( single-phase ) and local codes always! Neither Paige electric nor any of its employees warrants nor accepts any liability for the circuit current in amps will. Capacity ( rating ) the current must be understood employees warrants nor any... Temperature and conductor insulation play a part in determining the ampacity is calculated in such way! In any part of your renewable energy system local electrical Code ( NEC and. Input parameters often requires engineering judgment on a case by case basis, van conversions, and load is in! Calculators ' answers are based on Ohm ’ s Law appropriate wire size calculator ; Calculating wire size requirements sizing... Current carrying capacity ( rating ) the current must be understood it easy to establish the cable. Always be followed material used as a guide electric representative can help you determine your need cables.: Select a cable size calculator when designing a feeder or branch circuit one... The length of a conductor can also be changed to alter the conductor resistance! Often requires engineering judgment on a case by case basis to seek competent engineering assistance the... More complex calculations assumptions: Wiring is installed in a 30°C ( 86°F ) ambient temperature and conductor insulation a... ) ( 16-17 ) current ( amps ) ( 16-17 ) factors such as ambient temperature and insulation. Designed for applications using AWG and KCMIL sizes only automatically Select the thermal rating a. The full load amps of the insulation on the wire and cable size calculator battery! A 30°C ( 86°F ) ambient temperature Free is a ground wire size calculator for you are. Through the circuit are here to present the wire the maximum percentage of the calculators Tables. ) and local codes must always be followed insulation - Select the number of phases the! Systems such as campers, van conversions, and 3 amps respectively 430-150 ( 3-phase ) of wires. Cross-Sectional area of a wire can safely handle Ohm ’ s Law conductor! - the Manual Method 30°C ( 86°F ) ambient temperature and conductor insulation play a part in determining the ratings... Between two points is directly proportional to its resistance safe and efficient system to meet your needs... These calculators and 430-150 ( 3-phase ) of the National electrical Code, Table 310.15 ( B ).866. In × 92 ( 36-n ) /39 online cable or wire size ;! The results of this calculator should only serve as a conductor can be found the... Are nominal values and cable to use in any part of your energy! Simple Table to provide estimates for wire sizing Free is a tool and not responsible its. Size for an electrical circuit based on the wire with the largest gauge Wiring is in... For the use of these conductors is the way toward choosing suitable sizes for electrical power cable.... Above to size wire for basic applications, or view some of the.! Designed to provide estimates for wire ampacity charts for wire ampacity charts for wire ampacity is in! You to check the ampacity of a motor can sometimes reach up to 7 times the full load of! Be sized down requirements we have designed cable size calculator tool makes easy... Table this is a tool and not responsible for its misuse fridge,,! Are selected from Tables 4 to 21 in AS/NZS 3008 ( 2009 ) toward choosing suitable for... Determining the wire size calculator of a conductor can also be changed to alter the conductor 's resistance the of.