March 30, 2021 The below tool will assist to perform NEC conduit fill calculation. INPUT: Add new wire Remove wire Calculate RESULT: How is conduit fill calculated ? Conduit …Even if NEC conduit fill chart allows say 6 conductors to be carried in a pipe, other calculations/factors and practical experience may limit the number of ...Quickly and easily illustrates the potential labor cost savings when using MC AP ® cable in place of traditional MC cable. Go to Calculator. Get accurate conduit fill percentages with Southwire's Conduit Fill Calculator. Perfect for electricians, engineers, and contractors. Ampacity Calculator. The purpose of this calculator is to determine the ampacity of conductors in conduit, cable, or directly buried. All calculations are based on the National Electrical Code®. Information about the ampacity calculation methodology and code requirements is included below the calculator. Quickly and easily illustrates the potential labor cost savings when using MC AP ® cable in place of traditional MC cable. Go to Calculator. Get accurate conduit fill percentages with Southwire's Conduit Fill Calculator. Perfect for electricians, engineers, and contractors. CONDUIT FILL CALCULATOR for THHN & XHHW Raceway Fill Percentages as per NEC SIZE 40% Fill – Over 2 Wires 60% Fill – Nipple EMT GRC IMC PVC40 PVC80 FLEX ST EMT GRC IMC PVC40 PVC80 FLEX ST 1/2 0.122 0.125 0.137 0.114 0.087 0.127 0.125 .182 .188 .205 .171 .130 .190 .188 How does a reference to 300.17 leave the raceway fill up in the air. That is the reference used throughout the code for raceway fill. The Informational Note there, sends you to the xxx.22 sections of the raceway articles and those sections in turn send you to Chapter 9, Table 1 for the actual rule.Apr 3, 2022 ... ... electrical non-metallic tubing ( CEC Rules 12-1500 to 12-1514) - electrical ... CONDUIT FILL EXAMPLES for the Modern Electrician - How Many ...Apr 22, 2017 · To calculate conduit fill: Get the 40% area value from the table corresponding to the type of conduit you're using (Table 4). Get the approximate area value for the size conductors you're using (Table 5). Divide the 40% conduit area by the conductor area, to determine the number of conductors allowed. NOTE: When calculating conduit fill, if the ... This conduit fill table can help you make wiring decisions. Use it to determine how many wires your conduit tubing can safely contain. The horizontal numbers at the top of the graph refer to the size and type of conduit. The wire gauge can be found via the vertical column. The central numbers represent the number of wires that can fit for each ... Calculate Your Conduit Fill Percentage. A great tool to help electricians, engineers and contractors answer the question, "What size conduit do I use per the NEC®?" The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your ...Conduit fill chart emt-imc-grc #14awg -750kcmil from pdq industrial electric nj pa de md dc in Conduit fill chart Nec pipe fill chart. Conduit cec electrical. 10+ sample conduit fill chartsNec wire fill chart emt Fill conduit chart standard template cat printable pdf handypdf edit tubing duit hart con fillable pagesConduit fill chart.Even if NEC conduit fill chart allows say 6 conductors to be carried in a pipe, other calculations/factors and practical experience may limit the number of ...Conduit fill chart nec electrical cat6 pdf table cable capacity sample excel pvc requirements calculator templates cat6a cat5e mohawk underground. Emt conduit support spacing chartElectrical conduit math Conduit chart fill flexibleConduit electrical pvc chart rigid cable bending size fill rgs board choose schedule.The following is a typical conduit fill chart, which shows data for different types of conduit such as EMT conduit, IMC conduit, and GRC conduit. The possible wire gauges go from 14 AWG to 750 MCM, and from conduit trade sizes of 1/2 inches to 4 inches.Conduit Fill Calculator - Electrical Estimating 101 Training Solutions. Phone: 905-941-1611.PVC - SCH80 FILL CHART. 1/2" 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" 4" 5" 6" Trade Sizes in Inches. TYPE of WIRE. Cond. Size (AWG/kcmil) 14 9 17 28 51 70 118 170 265 358 464 736 1055 12 6 12 20 37 51 86 124 193 261 338 537 770 10 …So table 6K is for conduit Fill when using T90 and all the Wires are the same size. The table says that for a 1/2 EMT I can only use 5 #12 Wires (the old code said 9). However, if I go to table 10A, under the area mm2 for T90 #12 is 8.47. Now in table 9i under 40% it says 75mm2 is the max usable space for 1/2. So one way is 5 and the other …We suggest that the fill ratio be considered within 30%-70% range, based on such factors as number of bends, length of the conduit run as well as material of the conduit. Short run of solid HDPE provides least friction to pull, and therefore can tolerate 30% fill ratio whereas long concrete conduit run will cause more friction and the fill ratio should be lowered to …Table 9 Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F) — Three Single Conductors in Conduit. Size (AWG or kcmil) Ohms to Neutral per Kilometer. Ohms to Neutral per 1000 Feet. Size (AWG or …Basic Color Chart Striping; Basic Color Chart Wire; ICEA Color Codes Method 1 National… Military Part Number; S-cord Portable Cable Chart; Suggested Ampacities; Wire size vs. Voltage drop Common Physical/Electrical Properties; Data Cable Substitution Hierarchy; Chrysler/Ford Specification Conversion; Conduit Fill Chart; Stranding Classes ...Electric Light Orchestra, also known as ELO, is a British rock band that achieved immense success in the 1970s and 1980s. Known for their unique fusion of rock and classical music ...NEC Chapter 9 Table 4 is used to determine the dimensions and percent area of conduit and tubing.When it comes to electrical installations, one of the most crucial aspects that must be considered is choosing the right wire size. The American Wire Gauge (AWG) wire size chart is...March 30, 2021 The below tool will assist to perform NEC conduit fill calculation. INPUT: Add new wire Remove wire Calculate RESULT: How is conduit fill calculated ? Conduit …Car batteries are an essential component of any vehicle, providing the necessary power to start the engine and support various electrical systems. When it comes time to replace you...To calculate conduit fill: Get the 40% area value from the table corresponding to the type of conduit you're using (Table 4). Get the approximate area value for the size conductors you're using (Table 5). Divide the 40% conduit area by the conductor area, to determine the number of conductors allowed. NOTE: When …Liquidtight Conduit Fill. Table C7 (Liquidtight Flexible Metal Conduit) Based on Table 1 Chapter 9 of the 2005 National Electric Code. Trade Size in Inches. Wire Size (THWN, THHN) Conductor Size AWG/kcmil. 14. Industrial ˜ ttings wire ˜ ll chart Maximum number and size of conductors allowed in conduit bodies Conductor size AWG, MCM Conduit trade size Cat. # Hub 6 4 3 2 1 1/0 2/0 3/0 4/0 250 300 350 400 500 600 700 750 900 6” LBD014 All – 137 116 97 72 61 51 42 35 28 24 21 19 16 13 11 10 5” LBD012 All – 93 79 66 49 41 34 28 23 19 16 14 12 3 4”Microsoft Word - Conduit fill matrix charts Author: Don Created Date: 4/11/2018 8:53:06 AM ...Oct 26, 2023 · What is a PVC Fill Chart? A PVC Fill Chart is a valuable reference tool for electrical installations, allowing users to determine the maximum allowable number of wires that can be safely placed within PVC conduit, such as Schedule 40 or 80. Each row in the chart represents a different conduit size, while each column represents a different wire ... Conduit Fill Tables – NEC Table C Conductor Size – Awg / Kcmil – THHN / THWN SIZE 14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 250 300 350 400 500 600 750 2 ½ EMT 241 176 111 64 …Jun 26, 2021 · Conduit Fill Chart. June 26, 2021. The conduit fill chart offers a quick and convenient ... Our NEC Conduit Fill Chart calculates compact XHHW or THHN wire fill for EMT, IMT, rigid metal pipe using conduit trade size and AWG or MCM wire size. See Elliott Electric Supply for wholesale electrical supplies, including Electrical Metallic Tubing (EMT), Intermediate Metal Conduit (IMC), Rigid Metal Conduit (RMC) Pipe, XHHW wire, THHN wire, and other electrical supplies. Conduit Fill Chart. Calculate: Conduit Size Needed Based on Cables % Conduit is filled. Using: Part Number. Cable Diameter. Select conduit: What is the trade size of the conduit? What is the maximum percentage of conduit fill? Search by Part # or description: *Only one cable can be added when calculating how much a conduit can hold ...The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify …electrician.com Racewayfill Calculator. by electrician.com. This program calculates the number of same size conductors using the .8 roundoff method. In the Auto Mode this program limits the fill to 40 per cent for over 2 conductors, 31 per cent for only two conductors, and 53 percent for one conductor. Note: THWN, THHN, and THWN-2 have the same ... Welcome to the Conduit Fill Calculator website. We hope to provide you with the best online conduit fill calculator, as well as all relevant information regarding conduits, conduit fill, conduit accessories, and more! This online conduit fill calculator is compatible with the US National Electrical Code (NEC)! Calculate Your Conduit Fill Percentage. A great tool to help electricians, engineers and contractors answer the question, "What size conduit do I use per the NEC®?" The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your ...This video is packed with useful information on how to calculate examples of conduit fill using the National Electrical Code as the basis. If you've struggl...Re 3TM CIC Labor Saving Calculator. The industry’s first estimator showing the reduction of installation labor for Southwire® Cable-in-Conduit (CIC) compared to pulling cables into PVC ducts. Visit Page. Southwire's cable tray fill calculator takes the guesswork out of your project. Get accurate results and stay within NEC guidelines. 13 Apr 2020 ... Note that the nominal internal diameter is based on the National Electrical Code. Conduit Fill Chart. As you can see above, a 6″ PVC Sch40 ...Our NEC Conduit Fill Chart calculates compact XHHW or THHN wire fill for EMT, IMT, rigid metal pipe using conduit trade size and AWG or MCM wire size. See Elliott Electric Supply for wholesale electrical supplies, including Electrical Metallic Tubing (EMT), Intermediate Metal Conduit (IMC), Rigid Metal Conduit (RMC) Pipe, XHHW wire, THHN wire, and other electrical supplies. Simply select the conductor's insulation and then the conduit type and get the wire fill for each size. Enter Information Insulation: THHN/THWN/THWN-2 XHHW/XHHW-2/XHH THHW/THW RHW/RHW-2/RHH Compact THHN/THWN/THWN-2 Compact THHW/THW Compact XHHW/XHHW-2/XHH Calculate Your Conduit Fill Percentage. A great tool to help electricians, engineers and contractors answer the question, "What size conduit do I use per the NEC®?" The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your ... NEC Table Used To Select Conductor Area. NEC Chapter 9 Table 5 is used to calculate the total area of conductors.. NEC Table Used To Calculate Conduit Size. NEC Chapter 9 Table 4 is used to calculate conduit size, through dimensions and percent area of chosen conduit, using the total calculated conductor area.NEC Tables Used To Calculate Current-Carrying Conductor Rating. NEC Table 310.16 is used to select an insulated conductor rated 0 through 2000 volts, 60°C through 90°C, based on ambient temperature of 30°C, using the selected or calculated ampacity and temperature ratings. For ambient temperatures other than 30°C, temperature correction ...19 Jan 2021 ... Information by Electrical Professionals for Electrical Professionals ... Hey I worked hard on that table and it was a pain getting that .8 to work ...The fill chart above allows you to determine how many wires can go inside a given conduit and not exceed a 40% fill rate. If you have a fixed conduit type and size: Find the conduit type and size on the first column (for …The Wire Mesh / Cable Tray Fill table in below section shows the number of cables and the load in lbf/lineal foot developed by typical 4 pair and 6 pair cable weighing 20 lb/kft and 40 lb/kft, respectively. While this table is a useful guide, actual loads must be calculated using the cable specified for any project. Cable tray fill calculatorTo determine the maximum number of Ethernet cables that can fit inside a conduit of a specific size, you can refer to conduit fill charts. These charts provide guidelines based on the conduit size and the diameter of the cables being used. They help calculate the percentage of conduit fill, allowing you to gauge whether the chosen …We would like to show you a description here but the site won’t allow us.For conduit fill, the NEC allows a maximum fill of 40% for more than two wires, 31% for two wires, and 53% if only one wire is used. Why is conduit fill rate important? Conduit fill is essential to prevent overheating and ensure safe electrical operation by avoiding overcrowding of wires within a conduit.Use this simple tool to calculate conduit size and fill percentage, pulling tensions, cable sidewall pressure, jam probability, voltage drop, ground wire sizing, and more. Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an ... Feb 11, 2024 · Conduit Fill Chart Printable. Conduit fill charts in PDF format provide a useful reference for electricians calculating maximum capacity for conduit runs. The fill chart PDF condenses key data from the National Electrical Code into a one-page worksheet. This makes the code requirements quick and easy to access in the field or office. Prysmian Group’s Conduit Fill calculator is a quick and easy tool to calculate the minimum conduit size per National Electrical Code. It is designed for engineers, contractors, and other electrical professionals to find quick answers without spending hours on lengthy calculations. Code Selection for NEC® 2011, 2014, and 2017.Ultratite® Type NM. Specifications PDF. 1-6 of 6. View. Southwire offers a wide range of wire & cable products for HVAC systems. Explore our catalog and find what you need.Conduit Fill Chart Emt 27 Dec 2023. Free 6+ sample conduit fill chart templates in excel Conduit fill guide rev 11-08 Conduit fill table xhhw. Why Electricians Need UGLYS – A MINI ELECTRICAL LIBRARY IN YOUR POCKETConduit & Trunking Capacity Chart CABLE SPACING FACTORS To determing the conduit size needed, multiply the quantities of each size of cable by the appropriate factor, compare the total with the conduit figures shown. EG. What size of conduit is required for 6 No. 4mm² cables in a three metre run ...Electrical conduit: june 2017Emt conduit fill chart Conduit sizingElectrical conduit: electrical conduit fill. Conduit sizing chart20 unique nec conduit fill chart Electrical conduitConduit fill electrical chart table wire 40 conductors pvc chapter size pipe area wires tables cross trade inch romex sectional.Conduit fill chart nec electrical cat6 pdf table cable capacity sample excel pvc requirements calculator templates cat6a cat5e mohawk underground. Emt conduit support spacing chartElectrical conduit math Conduit chart fill flexibleConduit electrical pvc chart rigid cable bending size fill rgs board choose schedule.Apr 21, 2022 ... CREDITS: Photos used in illustrations are not mine. Credit to respective owners. Proper sizing of conduits in accordance with PEC 2017.Table 9 Alternating-Current Resistance and Reactance for 600-Volt Cables, 3-Phase, 60 Hz, 75°C (167°F) — Three Single Conductors in Conduit. Size (AWG or kcmil) Ohms to Neutral per Kilometer. Ohms to Neutral per 1000 Feet. Size (AWG or kcmil) XL (Reactance) for All Wires. Conduit Wire Fill Charts. Per National Electrical Code - Chapter 9, Table 4. Flexible Metal Conduit - BR, ABR. Liquidtight Flexible Metal Conduit - LA, LT, EF, ATLA, AT, ATX, …Dec 14, 2022 ... Wire 120V Electrical Outlets Klein Tools RT250: Amazon: https://amzn.to/2QbXSJo Sigma Electric ... 2023 NEC 300.17, 358.22 and Chapter 9 Table 1.Find the type of conduit that you want to use in table 4. Example: If you’re using electrical metal tubing (EMT) conduit, you’ll see that the closest size that you need is a 1 in conduit, which gives you a 39% fill. Conduit fill chart. This chart for conduit size for cable is based on the 2017 NEC and uses common conduit types and wires.Jun 29, 2021 · June 29, 2021. The PVC conduit fill chart offers a quick and convenient suggestion to determine the number of wires in a conduit. There are several types of PVC conduits on the chart i.e. SCH 40 and SCH 80. The PVC conduit fill chart fully complies with NEC 2020 chapter 9. For a mix of wire type and size, an online tool to decide conduit fill ... A nipple is a fixed length raceway pre cut and threaded. Use the same rules as the nipple material. Generally the rules for rigid pipe. Conduit fill rules apply as for the raceway. even a box connector which is little more than a 1/2 inch wide has conduit fill rules. your panelboards have space limitations too.According to the chart you could fit 9, #10 conductors in 3/4" sch 40. I wouldn't put that many in. 1" conduit minimum but keep in mind pulling in 4 more wires later on top of 5 that are already there is different than pulling all 9 at once. 1-1/4" would be a safer bet but its a trade off with price. U.Conduit fill chartHow many number 10 wires fit in conduit Electrical conduit fill chart code wire cable number bending nec data maximum choose board conductors diyConduit electrical. Free 6+ sample conduit fill chart templates in excelElectrical conduit: electrical conduit fill chart Conduit cec electricalPvc conduit fill chart. …Conduit Fill Table. This conduit fill chart is used to determine how many wires can be ... Jan 8, 2024 · Refer to Conduit Fill Chart: Consult a conduit fill chart or the appropriate section of the local electrical code to determine the maximum allowable fill ratio based on the conduit size and the wire sizes being used. The fill ratio is expressed as a percentage and represents the maximum amount of the conduit’s cross-sectional area that can be ... Step One: Select a conduit type and size Step Two: Enter the insulation type, wire gauge, and amount of wires Insulation Gauge Amount Amount: Amount: Add another row …Calculating conductor volume is a matter of adding up individual conductor fill volumes and conductor equivalent volume fills — and there are five such volumes. After you calculate all five volumes using 314.16(B)(1) through (5), add them up using the equivalent volumes found on Table 314.16(B). The number you get is the total conductor …Conduit Calculator & other calculators. Online calculators are a convenient and versatile tool for performing complex mathematical calculations without the need for physical calculators or specialized software. With just a few clicks, users can access a wide range of online calculators that can perform calculations in a variety of fields ...Jan 19, 2024 · Acquire a conduit fill chart: Conduit fill charts can be found in electrical code books, manufacturer specifications, or online resources. Choose a reliable and up-to-date chart that matches the type and size of conduit you are working with. Identify the conduit size: Locate the section of the conduit fill chart that corresponds to the trade ... 31 Oct 2022 ... Here we go through sizing conduits using conductors, but using the 2021 Canadian Electrical Code 25th Edition.A potato has the potential to conduct electricity because it is a source filled with electrolytes. These electrolytes act as an electrical conductor which means they allow the flow...Dennis Alwon. There are 2 issues that many electricians get confused. The first is conduit fill-- the equipment grounding conductor is counted because it takes up space. The second is de-rating for current carrying conductor's --the equipment grounding conductor does not count because it is not a current carrying conductor.electrician.com Racewayfill Calculator. by electrician.com. This program calculates the number of same size conductors using the .8 roundoff method. In the Auto Mode this program limits the fill to 40 per cent for over 2 conductors, 31 per cent for only two conductors, and 53 percent for one conductor. Note: THWN, THHN, and THWN-2 have the same ... The app provides quick and easy navigation. Enter the Conduit Type and Size and specify your conductors. The App will calculate the Conduit Fill % as per NEC Guidelines. Southwire Company is North America’s leading manufacturer of wire and cable used in the distribution transmission of electricity. Throughout its history, our company …I don't want to look for my modules. Trying to figure out how many #12s fit in 3/4" EMT: Table 9a tells me the area of the pipe is 330mm. Table whatever says it's max 40% fill for 4 or more conductors. 330*0.4 = 132mm. Table 6a tells me the area of RW90 #12 is 11.58mm. 132/11.58 = 11.39. A conduit that will be used for an electrical project must be approved for the application. The type of electrical wire to be installed into the conduit must be approved for the project as well, with special attention given to the type of insulation. For example, some types of insulation may not be used for underground projects.Once you know the wire gauge, the table in chapter 9 can show you the maximum number of wires you can run through the conduit for that gauge. The NEC expects contractors to apply the 40 percent rule to calculate the conduit fill capacity. In other words, they don’t expect a contractor to use more than 40 percent of a conduit’s total capacity.Get Conduit Fill Table for Different Conductors THHN/THWN/THWN-2 XHHW/XHHW-2/XHH THHW/THW RHW/RHW-2/RHH Compact THHN/THWN/THWN-2 Compact THHW/THW Compact XHHW/XHHW-2/XHH. Related Calculators. Circtuits/Feeders Power/Amps/Voltage Feeder/Voltage Drop Motors Transformers. ConduitsElectrician Calculator Pro™ ... NEC compliant. All calculations are performed according to the NFPA-70 (National Electrical Code) - never have to carry your copy again! ... Conduit Sizing. Find conduit size by fill percentage or amount of wires. Learn more ...Table 9G specifically has the 40% fill for various conduits. We know that we need to fit 157.38mm², in the conduit but cannot exceed the 40% fill rule. Using the table, we find that EMT conduit with a nominal trade size of 27 has a 40% area of 215.65mm² (trade size 21 is 132.03 < 157.38)This conduit fill chart is used to determine how many wires can be safely put into non-PVC conduit tubing or pipe. Each row going across is a different conduit size and type of metal conduit, either Electrical Metal Tubing (EMT), Intermediate Metal Conduit (IMC), Galvanized Rigid Steel Pipe (rigid metal conduit, RMC), or Flexible Metal Conduit (RMC).
When it comes to electrical installations and appliances, safety should always be the top priority. One critical aspect of ensuring safety is choosing the right wire size for the a.... Harbor freight bismarck nd
Use this simple tool to calculate conduit size and fill percentage, pulling tensions, cable sidewall pressure, jam probability, voltage drop, ground wire sizing, and more. Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an ...Conduit comes in conventional sizes of 1 m2, 2 m4, 1 m2, and 4 m2. Conduit diameter is typically measured in millimeters outside the United States and is determined by its diameter. Therefore, 20mm, 25mm, 32mm, 40mm, and 50mm are typical metric outside dimensions. Electrical metallic tubing can have the same dimensions as PVC but will be …QUICK CONDUIT FILL CHART Raceway Fill Percentages SIZE 40% Fill – Over 2 Wires 60% Fill – Nipple EMT GRC IMC PVC40 PVC80 FLEX ST EMT GRC IMC PVC40 PVC80 FLEX ST 1/2 0.122 0.125 0.137 0.114 0.087 0.127 0.125 .182 .188 .205 .171 .130 .190 .188 Sealtite Fill Chart. 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" 4" Trade Sizes in Inches. TYPE of WIRE. Cond. Size (AWG/kcmil) 14 8 13 22 36 63 81 134 201 ... Calculate Your Conduit Fill Percentage. A great tool to help electricians, engineers and contractors answer the question, "What size conduit do I use per the NEC®?" The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your ... Jan 8, 2024 · Refer to Conduit Fill Chart: Consult a conduit fill chart or the appropriate section of the local electrical code to determine the maximum allowable fill ratio based on the conduit size and the wire sizes being used. The fill ratio is expressed as a percentage and represents the maximum amount of the conduit’s cross-sectional area that can be ... 24 Jan 2019 ... Comments121 ; Conduit Fill / Different Insulation types. Craig Michaud- Electrical Instructor · 48K views ; Calculating Voltage Drop. AccessToPower ...Step One: Select a conduit type and size Step Two: Enter the insulation type, wire gauge, and amount of wires Insulation Gauge Amount Amount: Amount: Add another row …Prysmian Group’s Conduit Fill calculator is a quick and easy tool to calculate the minimum conduit size per National Electrical Code. It is designed for engineers, contractors, and other electrical professionals to find quick answers without spending hours on lengthy calculations. Code Selection for NEC® 2011, 2014, and 2017.Conduit Fill Table. This conduit fill chart is used to determine how many wires can be safely put into non-PVC conduit tubing or pipe. Each row going across is a different …1. Required fill factor k (in decimal) 2. Cable diameter d, giving a cable area, a : a = π 4d2 a = π 4 d 2. Ca = sum of area for all cables. D = 4Ca πk−−−√ D = 4 C a π k.Liquidtight Conduit Fill. Table C7 (Liquidtight Flexible Metal Conduit) Based on Table 1 Chapter 9 of the 2005 National Electric Code. Trade Size in Inches. Wire Size (THWN, THHN) Conductor Size AWG/kcmil. 14. 12 AWG Type THWN = .0133 Sq. inches. Step 2. Total the square inch areas: Step 3. Use Table 4 for the areas of conduit or tubing permitted: Find the table specific to Article 358 Electrical Metallic Tubing (EMT). Go down the fourth column (over 2 wires – 40%) to find a value that is at least4171 Sq. inches..