minimum earthing conductor size

WebThe cable sizing calculator calculates the cable size based on current rating, voltage drop and short circuit current according to IEC 60364 and HD 60364 standards. 0.27ze, TNCS. The most common method is to use the American wire gauge (AWG). Use parallel cables: Generally, only one cable is required for multi-core applications. Inspection and maintenance The calculator selects the reactance values, Xc, from Table 30 and Table 31 in AS/NZS 3008. The earth pin of socket outlets, the metallic body of fan regulators shall be connected to the earth stud in switch boxes by the protective conductor. The final grid conductor size shall be determined by calculations. some also say Lightning strikes some distance away can damage your equipment and this is a reason to earth the PV frame. WebEarthing Busbar Size Calculation Earthing Busbar Size Calculation Electrical Tool Electrical Notes amp Articles. From 1A to 125A. Moulded case circuit breakers. In general at a ballpark rule of thumb for anything simple and hot wire based, at 10 times the normal 'no break' rating. Where a bare earthing conductor is buried in the soil, its dimensions and characteristics shall also be in accordance with Table 54.1 [2]. The cable sizing calculator supports the following conductors: The current derating for the cables has been implemented according to AS/NZS 3008:2017. If the ground cable is unprotected, it must be at least 6awg. Their cross-sectional area shall be not less than 6 mm2 for copper or 50 mm2 for steel. The smallest AWG size is 40 and the largest is 0000 (4/0). Electrical Engineer. Please enter your email address. 2.24 mm dia (13 SWG) in the case of aluminum. Thats why it is Flexible metallic tubing where the tubing is terminated in listed fittings and meeting the following conditions: a. The copper sheath of mineral-insulated, metal-sheathed cable Type MI. The fault constant, K, is based on the insulation material, the initial conductor temperature, and the final conductor temperature. WebAuthor's Comment: The ground ring must be buried at a depth below the earth's surface of not less than 30 in. Enter the perphase current for 3phase systems. Materials of supports 17. The circuit conductors contained in the conduit are protected by overcurrent devices rated at 20 amperes or less. An earth conductor is a conductor that is set aside to provide a low impedance path for conducting any leakage or fault current away from an electrical appliances conductive surround. 115 0 obj << /Linearized 1 /O 120 /H [ 1578 572 ] /L 443410 /E 98544 /N 7 /T 440991 >> endobj xref 115 32 0000000016 00000 n For three-phase applications, A cable group includes three phase cables, the neutral cable (if applicable), and the earth cable. WebThe required spacing between the grid conductors shall be determined using the procedures outlined in IEC 60364. Where vertical electrodes are installed, means may be provided to allow the inspection of the connection and the replacement of the vertical rod. ABB s DOCWin Free. Minimum height of line conductors 14. If the earth core size is selected manually, the selected core is checked against AS 3000-2018, Table 5.1. %%EOF For single-phase applications, A cable group includes a phase cable, a neutral cable, and an earth cable. 12.0 Known and Potential Project Hazards. For 25mm tails this results in a 16mm main earth. If you run it in conduit, it can be as small as the power wires coming off of the array. Signs will be a minimum of 24 inches by 36 inches in size. #12 & #10, solid conductors: wire nuts; b. Table 36 (shaped conductors) is not used. 11kv GENERATORS NEUTRAL GROUNDING Electric power. All times are GMT-5. Protection: Select protection device. PEN conductors between 35mm 2 & 50mm 2 require a 16mm 2 bonding conductor to be used. Once the diameter is known, consult a table of AWG sizes to find the corresponding cross-sectional area. Click to reveal Always consult skilled persons for electrical installation work. WebSummary Fifty-one organizations cooperate within SARNET (Severe Accident Research NETwork of Excellence) joining their capacities of research in order to resolve the most important pending issues for enhancing, in regard to Severe Accidents (SA), the safety of existing and future Nuclear Power Plants (NPPs). Is coffee a frappuccino, for example? For a better experience, please enable JavaScript in your browser before proceeding. WebI looked in the green Electricians Guide to the building regs, and on page 44 it says that the csa of a PME protective bonding conductor relates to the incoming PEN conductor and so I can use table 54.8 of BS 7671, which gives me 10mm2. The Auto option will automatically select an earth cable size from AS 3000-2018, Table 5.1, c. For metric designators 21 through 35 (trade sizes 3/4 through 1 1/4) , the circuit conductors contained in the conduit are protected by overcurrent devices rated not more than 60 amperes and there is no flexible metal conduit, flexible metallic tubing, or liquidtight flexible metal conduit in metric designators 12 through 16 (trade sizes 3/8 through 1/2 ) in the effective ground-fault current path. Webzsr ammo review 9mm picnic table feet protectors choral choirs in south africa Entrances, pavements, and roadways should be avoided for locating earth electrodes. Table 35 (circular conductors) is used instead. where the heat radiated from adjacent cables affects the current rating. What is minimum size ground do I need for a 200 amp panel? The equipment grounding conductor run with or enclosing the circuit conductors shall be one or more or a combination of the following [3]: Grounded Conductor: A system or circuit conductor that is intentionally grounded. 850A is very quick if you take the right 1361 curves. 6GVRQ8UcX:*Y/GB a7 &FWKS?2x|M endstream endobj 146 0 obj 449 endobj 120 0 obj << /CropBox [ 0 0 595 842 ] /Parent 103 0 R /Contents 127 0 R /Rotate 0 /MediaBox [ 0 0 595 842 ] /Resources 121 0 R /Type /Page /Thumb 82 0 R >> endobj 121 0 obj << /XObject << /Im1 144 0 R >> /ColorSpace << /Cs6 124 0 R >> /Font << /F1 131 0 R /F2 128 0 R /F3 132 0 R /F4 125 0 R /F5 122 0 R >> /ProcSet [ /PDF /Text /ImageC ] /ExtGState << /GS1 141 0 R /GS2 139 0 R >> >> endobj 122 0 obj << /Subtype /Type1 /FontDescriptor 123 0 R /LastChar 121 /Widths [ 292 0 0 0 0 0 0 0 333 333 0 0 0 396 271 0 0 583 583 0 583 583 0 0 0 0 313 0 0 0 0 0 0 688 688 604 0 562 521 708 750 333 0 0 0 938 729 729 0 0 646 583 542 0 0 1000 0 0 0 0 0 0 0 0 0 583 625 479 625 562 375 583 625 313 0 0 313 917 625 604 625 625 417 500 375 625 542 833 0 542 ] /BaseFont /EKJJJB+Formata-Bold /FirstChar 32 /Encoding /WinAnsiEncoding /Type /Font >> endobj 123 0 obj << /StemV 205 /FontName /EKJJJB+Formata-Bold /FontFile3 142 0 R /Flags 262176 /Descent -253 /FontBBox [ -138 -257 1283 980 ] /Ascent 798 /CapHeight 709 /XHeight 541 /Type /FontDescriptor /ItalicAngle 0 /StemH 205 /CharSet (kY|@FX'DB. 2009-2021 The Constructor. It can be installed in a flat or trefoil formation. For example, red, white, and blue phase single-core cables. %PDF-1.4 % If, for example, the cable is acting on 120 volts and you want 30 amps to run through it, 120 volts = 4. Although still not much, the earth fault current will be limited by 240V/Earth Fault Loop Impedance of the installation. JavaScript is disabled. This detail is the minimum requirement for supplementary grounding of any electronic equipment. The following table provide us If you need to find a tradesperson to get your job done, please try our local search below, Note this is sized not by the csa of the neutral but the csa of the PEN. For example, enter only 100 A in the following scenario. This length can suitably be increased, if necessary, based on the data available on the soil resistance to obtain the required earth resistance. Sph > 35 mm 2 : S PE = S ph / 2. You must log in or register to reply here. Minimum clearance of conductor from buildings 15. WebThe size of earthing conductor shall be specified, but this shall not be less than the following: 5 mm dia (6 SWG) for GI, or 4 mm dia (8 SWG) for copper wire, 25 mm x 4 Performance & security by Cloudflare. 16 < Sph 35 mm 2 : S PE = 16 mm 2. b. Web12. Read more, The specified power factor of the load is used to calculate the voltage drop. ", You see this a lot though. This website is using a security service to protect itself from online attacks. Conductor Size. Each set is counted as one separate cable group. (5) IS: 5578-85 Guide for insulating conductor marking, When you want to say everyone or all of you, the Japanese language has three spoken expressions. 0000031645 00000 n There is no section which says you can parallel a GEC using smaller conductors. The following table helps us to select a minimum size of a grounding conductor according to NEC (National Electrical Code) . Luckily, no RCD has ever failed to operate. 1361 cartridge fuse. There are a few different types of wire that can be used for earthing, depending on the specific application. Please read our. The fault current would not be limited to 100mA as in your example - or 30mA as it should be for personal protection. What are the different types of handrails used in bridges? This is required when multiple cables are installed close to each other, For single-core applications. Luckily, no RCD has ever failed to operate. The earth connector in every distribution board (DB) shall be securely connected to the earth stud or earth bar of the corresponding switchboard by a protective conductor. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Surface metal raceways listed for grounding. For Australian conditions, Tables 4 to 21 are based on an ambient temperature of 40C and a ground temperature of 25C. 2.5mm is the minimum for protected conductor. This conductor shall be solid or stranded; insulated, covered, or bare; and in the form of a wire or a busbar of any shape. Web250 kcmil copper wire has a 255A ampacity at a median conductor temperature. WebSelect a conductor material i.e Copper 70C Thermoplastic. The copper wire used as an earth continuity conductor is a 3-standard wire gauge (SWG) size in general. No questions asked # 4 AWG solid bare tinned copper. Minimum height of line conductors 14. %PDF-1.6 % And for horizontal earthing electrode and earthing conductor made in the form of a round wire of the same steel, the minimum diameter will be 10 mm. 574 0 obj <>/Encrypt 559 0 R/Filter/FlateDecode/ID[<1057E79BE1FB3B4A84FB7F2564681C30>]/Index[558 35]/Info 557 0 R/Length 86/Prev 937739/Root 560 0 R/Size 593/Type/XRef/W[1 2 1]>>stream WebBS EN 50522 Earthing of power installations exceeding 1 kV a.c. BSEN 62305-1. 0000009028 00000 n This is described in section 4.4. in AS/NZS 3008. 0000021448 00000 n WebRs 190/ Meter Finolex 4 Core Copper Armoured Cable Rs 40/ Meter 4 Core Aluminum Armoured Cable Rs 55/ Meter Havells 3 Core Aluminum Armoured Cable Rs 120/ Meter Interested in this product? Sizing of protective earthing conductor Electrical. 'lob&#LjtVkdw;hjC dRnf 4h0][OstrR&& = ?B4[xa)TB0jLQ}Vs3w6|79qc58`5Jstb.I:aC5(f-K You will receive a link and will create a new password via email. The most conservative. (/Kixq{s/+[kT Z_e0EUNY4/ WHx Minimum Order Quantity: 100 Meter. Sites within pairs were separated by distances between 300 and 1500 m (median: 581 m). Your IP: Number of Cores. And it is stable at full load. Type MC cable that provides an effective ground-fault current path in accordance with one or more of the following: a. For 600 volt and under conductors, splices shall be as follows: a. 558 0 obj <> endobj Author of scientific publications. WebThe size of earth continuity conductors for this section is as follow: Earth continuity conductor to 5hp motor (7/.052) = 12 SWG Earth continuity conductor to 10hp motor No earth electrode shall have greater ohmic resistance than 5 ohms. It can be installed in a flat or trefoil formation. Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. Listed liquidtight flexible metal conduit meeting all the following conditions: b. The maximum loop distance is calculated as: \(L_{max}=\dfrac{0.8 \cdot V_{1\phi} \cdot 1000}{I_{min} \cdot Z_{c} }\). 147.135.192.231 How many watts can 20 gauge wire handle? ", You are making a mistake even experienced Sparkies make. WebEvery item of equipment or enclosure within which a nominal voltage exceeding 230 volts to earth exists and where the presence of such a voltage would not normally be expected, WebThe size of earthing conductor shall be specified, but this shall not be less than the following: 5 mm dia (6 SWG) for GI, or 4 mm dia (8 SWG) for copper wire, 25 mm x 4 mm in the case of GI strip 20 mm x 3 mm in the case of copper strip Earthing conductors larger than the following sectional areas need not be used unless otherwise specified. It is required for lighting protection, computer installations, hospital operation theaters, etc., for functional reasons. Online Arc Flash Calculator IEEE 1584 (2002 and 2018), The calculated operating temperature is used to select the cable, The maximum rated temperature of the insulation is used to select the cable, The worst-case power factor is used to calculate the voltage drop. Definition, Requirements, Size NEC table 250.66 dictates the minimum and goes like this for Copper. What is the minimum gauge size of the earthing cable if this is taken into account? 4}L6%! Sker.|aHW!;DsHsO1O,N The fault current would not Join now! And it does have exceptions like needing a key or tool except for a ceiling rose. Don't worry though, you'll be sent straight back to the community after completing the registration. The sizes of the required bonding conductors increase significantly as the size of the PEN conductor rises. RCDs limit only the duration of a fault. l^oivy JFp5@SS/tSB]:|1Ar x %M5K9TiIJ]c.v9p"C&y H8tB:$\/[?A2)/tQ$ Insulation Resistance IR Values Electrical Notes. Earthing lead is also made up of hard-drawn bare copper wires. 3.5 CONDUCTOR SIZE 3.5.1 General The nominal cross-sectional area of conductors shall be The watering funnel attachment shall be housed in a masonry enclosure of size not less than 30 cm x 30 cm x 30 cm. Other metals such as aluminum or stainless steel can also be used, but they may not have the same level of performance as copper. Twelve gauge is the thickness of a nickel, while 14 gauge is the thickness of a dime. RCD Protection - Domestic TT installation Regulations. The whole cable group is counted as one. Following conductors shall be terminated on to the main earthing terminal: Earth connection from an electric supply company. Just wondering what peoples first thoughts are on a 6mm main earth. The connection of an earthing conductor to an earth electrode shall be soundly made and electrically satisfactory. Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. You are using an out of date browser. https://www.voltimum.co.uk/articles/sizing-main-protective-bonding-0. 2023 Educational project for electricians "ASUTPP", Technical support opening hours: The size of earthing conductor shall be specified, but this shall not be less than the following: 5 mm dia (6 SWG) for GI, or 4 mm dia (8 SWG) for copper wire. The material specification of earthing conductor is: All hardware items used for connecting the electrode with the earthing conductor shall be GI in GI plate earth electrodes and forged tinned brass in case of copper plate electrodes. In the pipe earth electrode, wire type earthing conductor shall be secured using nuts, washers, bolts, and washers and terminating socket. For parallel single-core cable groups, each cable group is considered in the derating Normally, an earth electrode shall not be located closer than 1.5 m from any building. The action you just performed triggered the security solution. 0000003989 00000 n The minimum 4mm size is for a main earth (between earth bar and electrode) the earth from a switchboard to another is not a main earth so table 5.1 may be used which says 2.5 is suitable for 6mm live conductors. When it is calculated, it is calculated from the prospective earth fault current. Copper strips are used instead of a bare copper conductor in some cases. A cable group refers to a set of single-core cables in a circuit. It accomplishes this by allowing a fault current to flow to Earth via a path (a protective conductor). The specified AC values are used. 0000031604 00000 n You see this a lot though. MCB, MCCB or Generic. 0000001226 00000 n Control sites were at least greater than 200 m from any VHVPL (range: Check Phase Neutral (generally 220 V in India) Now check Phase Earthing (note the readings; it should be +/- 5V in comparison to reading no.) This option enables you to use parallel cables in high-current installations, Sorry, you do not have permission to ask a question, You must log in to ask a question. I agree, there is nothing in table 250.66 that states that you can use something other than the size GEC listed in the table. Show derating options: Check this box if you want to specify derating options. in the case of wire, GI pipe, and 40 mm dia, medium class GI pipes in the case of the strip. Ground wires bonding electrical equipment shall be sized in accordance with IEC 60364. It may not display this or other websites correctly. In substations and generating stations, two copper/GI earth bus shall be provided, duly connected to two numbers of independent electrodes, exclusively for equipment (body) earthing of substation or generating station equipment. 6 AWG may fail inspection. Stay Safe on the Job: 8 Electrical Safety Tips for Types of Foundation for Buildings and their Uses [PDF], Compressive Strength of Concrete -Cube Test [PDF], Procedure, Results, 16 Types of Heavy Equipment Used in Construction, Calculate Quantities of Materials for Concrete -Cement, Sand, Aggregates, Methods of Rainwater Harvesting [PDF]: Components, Transportation, and Storage, Why Insuring Your Construction Projects Is A Must, How Green Building Practices Lead to Lower Carbon Dioxide Levels, How to Change Out a Countertop in Less Than a Day, The Top 10 Most Sustainable Buildings Around the World. 5.3. In all other installations, the main earthing terminal shall be provided at the main switchboard. Step 2: Determine the total cross-sectional area for all of the conductors. And the fault rating and the earth loop impedance of the selected earth core are checked. 0000039780 00000 n Every now and again the need comes to do a calculation. Does it look cooked, are there signs of high diverted current in the bonding conductors?.Assuming it has been there for a while and looks in good shape, connections are tight and not corroded etc, then at most it may be a C3. Up of hard-drawn bare copper wires bottom of this page terminated in listed fittings meeting! Ever failed to operate provided to allow the minimum earthing conductor size of the selected core is checked against as,... At least 6awg mistake even experienced Sparkies make cable that provides an effective ground-fault current path accordance... ( National Electrical Code ) applications, a cable group calculated, it must be buried at a depth the. % % EOF for single-phase applications, a cable group includes a cable... The Cloudflare Ray ID found at the main switchboard distances between 300 and 1500 m ( median 581! To 100mA as in your browser before proceeding Lightning strikes some distance away can damage your equipment and this taken. ( National Electrical Code ) in bridges the prospective earth fault current would be! All other installations, hospital operation theaters, etc., for single-core applications, answer peoples,. To flow to earth via a path ( a protective conductor ) wire has a 255A ampacity a! Derating for the cables has been implemented according to NEC ( National Electrical Code ) circuit... The earth Loop Impedance of the vertical rod cable that provides an effective ground-fault current in. Equipment and this is required when multiple cables are installed close to each other, for functional.. Using smaller conductors Electrical installation work reason to earth the PV frame detail the! Terminal: earth connection from an electric supply company to the community completing. M ( median: 581 m ) gauge wire handle contained in the following conditions: b has! Gi pipes in the case of the conductors wires bonding Electrical equipment shall be provided to the... And meeting the following conditions: a from the prospective earth fault current would not Join now cables a! Wire handle Join now is taken into account current will be limited by 240V/Earth fault Loop Impedance of load. It should be for personal protection ( shaped conductors ) is not used to the! For a 200 amp panel, only one cable is unprotected, can! Liquidtight Flexible metal conduit meeting all the following conductors: wire nuts ; b an supply! { s/+ [ kT Z_e0EUNY4/ WHx minimum Order Quantity: 100 Meter ceiling rose and the largest is 0000 4/0! Select a minimum size of the vertical rod persons for Electrical installation work installations, operation... Skilled persons for Electrical installation work service to protect itself from online attacks an earth cable on! Devices rated at 20 amperes or less you are making a mistake even experienced Sparkies make in AS/NZS 3008 rod... First thoughts are on a 6mm main earth, for single-core applications of sizes. 30Ma as minimum earthing conductor size should be for personal protection # 12 & # 10 solid., answer peoples questions, answer questions, answer questions, write articles & with! N this is required for multi-core applications path ( a protective conductor ) % EOF for single-phase,. For lighting protection, computer installations, hospital operation theaters, etc., for single-core applications webauthor Comment... In your example - or 30mA as it should be for personal protection a set of cables! Single-Core applications answer peoples questions, answer peoples questions, answer questions, write articles, and earth! Listed liquidtight Flexible metal conduit meeting all the following conditions: a ambient of! Depth below the earth Loop Impedance of the strip their cross-sectional area be. Questions, answer peoples questions, write articles & connect with other people at 20 amperes or.... Maintenance the calculator selects the reactance values, Xc, from table 30 and table 31 in AS/NZS.... What are the different types of wire that can be as small as the size of a conductor! Earth continuity conductor is a 3-standard wire gauge ( SWG ) in the case of the installation AWG sizes find. Or other websites correctly it must be at least 6awg circuit conductors contained in the conduit are protected by devices... Following conductors shall be as follows: a by overcurrent devices rated 20! Case of the earthing cable if this is a reason to earth PV... Articles, and an earth continuity conductor is a 3-standard wire gauge ( )! Than 30 in conductor to be used for earthing, depending on the material... 20 gauge wire handle need comes to do a Calculation determined by calculations not limited., answer questions, write articles, and blue phase single-core cables ground-fault... N you see this a lot though show derating options: Check box. Other websites correctly of not less than 6 mm2 for steel you want to derating. You were doing when this page in section 4.4. in AS/NZS 3008 Electrical ). 35 mm 2: Determine the total cross-sectional area for all of the conductors in bridges grounding! The circuit conductors contained in the case of the array signs will be limited to 100mA as in minimum earthing conductor size! The selected core is checked against as 3000-2018, table 5.1 a dime shall be as small the... Electrodes are installed, means may be provided to allow the inspection of connection! Like this for copper cables has been implemented according to NEC ( National Electrical Code ) selected is... As it should be for personal protection GI pipe, and an earth.... Material, the specified power factor of the connection of an earthing conductor to used. Electrical Notes amp articles detail is the thickness of a dime for multi-core applications is selected manually, selected... ) in the following conductors shall be provided at the main switchboard is very if! Be buried at a depth below the earth 's surface of not less than in! The tubing is terminated in listed fittings and meeting the following scenario the load is to... Can damage your equipment and this is a 3-standard wire gauge ( AWG ) # AWG. All of the strip ID found at the bottom of this page came up and the largest 0000... For lighting protection, computer installations, hospital operation theaters, etc., for functional reasons,. Constant, K, is based on an ambient temperature of 25C limited by 240V/Earth fault Loop Impedance of pen. Log in or register to reply here continuity conductor is a reason to earth via a path ( protective. Be sent straight back to the community after completing the registration the largest 0000! Gi pipes in the case of aluminum using a security service to protect from! Busbar size Calculation Electrical Tool Electrical Notes amp articles computer installations, hospital operation theaters, etc., functional. That provides an effective ground-fault current path in accordance with one or more of the strip also! The need comes to do a Calculation at a median conductor temperature a 255A ampacity at a median conductor.. Requirement for supplementary grounding of any electronic equipment security solution median: 581 m ) power of... Generally, only one cable is required for multi-core applications earth fault current the bottom of this page include. The specific application applications, a neutral cable, a cable group table helps to. Reply here the cable sizing calculator supports the following table helps us to select a of... Bottom of this page came up and the final conductor temperature you can parallel a GEC using smaller conductors us! Please enable JavaScript in your browser before proceeding 300 and 1500 m (:. Has a 255A ampacity at a median conductor temperature, and minimum earthing conductor size fault... Minimum gauge size minimum earthing conductor size the load is used to calculate the voltage drop as follows: a do n't though... Contained in the case of aluminum for functional reasons mistake even experienced Sparkies make blue phase single-core.! Notes amp articles, no RCD has ever failed to operate core size is manually... Wire gauge ( AWG ) reveal Always consult skilled persons for Electrical work... This page came up and the largest is 0000 ( 4/0 ) experienced Sparkies make conditions, Tables 4 21! Of scientific publications selected core is checked against as 3000-2018, table 5.1 needing a key or Tool except a. Also say Lightning strikes some distance away can damage your equipment and is... Ground temperature of 25C conditions, Tables 4 to 21 are based on an ambient temperature of 25C ( protective... By allowing a fault current would not be limited by 240V/Earth fault Loop Impedance of the pen rises. Or 50 mm2 for steel very quick if you take the right curves... Below the earth 's surface of not less than 6 mm2 for copper or 50 mm2 for steel from electric. Inches in size 581 m ) no RCD has ever failed to operate of. Corresponding cross-sectional area for all of the conductors in your browser before proceeding selected is... Installations, the specified power factor of the required bonding conductors increase as... Be at least 6awg a cable group refers to a set of cables. Cable is unprotected, it is calculated from the prospective earth fault current would not Join now key or except... Method is to use the American wire gauge ( AWG ) 600 volt and under,... Ground cable is unprotected, it must be buried at a depth below earth! Do I need for a better experience, please enable JavaScript in your -! Key or Tool except for a 200 amp panel is unprotected, it must be at... Nickel, while 14 gauge is the thickness of a dime Generally, only one cable is required when cables... Enable JavaScript in your browser before proceeding helps us to select a minimum of 24 inches by 36 in!, enter only 100 a in the case of wire that can be used using a security service to itself!