overflow:hidden; } The origin of the wording in 250.64(C) is. 0% { The only condition is the splice has to be fished, meaning you cannot legally use this splicing device where there is no drywall yet installed because the NEC expects you in this case to use a proper junction/outlet box, so the splice can later be accessed. It only takes a minute to sign up. padding: 8px; .profile-card-4 .profile { .profile-card-2 .icon-block{ font-weight:700; } Do I need a thermal expansion tank if I already have a pressure tank? color: #000 !important; @Johnny There's nothing in the NEC about driving a second grounding rod into the ground and securing the remaining length of grounding wire to it. LENGTH 2.06 INCH. margin: 0 0 5px; } Bear in mind that all three conditions have to be met to be compliant with the NEC, but none of the conditions are onerous, and with these three key pieces of knowledge, you will be able to quickly see if your breaker box is compliant and where some problems may be. .profile-card-3 i:hover { .profile-card-1 i { That is, of course, if the correct conditions are met in terms of NEC 312.8(A): Dont exceed 40% of the cross-sectional area of the breaker box with splices and wire nuts, make sure the total area of all splices and conductors doesnt exceed 75% of the breaker panel and make sure to have the correct labels on the enclosure. position:relative; .thumbnail:hover { float:left; padding-top:20px; text-decoration:none; font-size:25px; This scenario is even more rewarding when the job pays the contractor the same, regardless of where the contractor finds power for the room. This provides the electrician with a ready-made NM cable whip conveniently positioned for feeding the first receptacle in the new room addition. transition-duration: $duration; 100% { .profile-card-4 .card-img-block{ A quick look through the various markets we are equipped to cater to: browse Burndy Markets, Features: Irreversible Compression Ground Tap Figure 6 Can Be Used As A Tap Connector Or As A Tap Splice Connector, Four Die Sets And Eight Connectors Can Accommodate A Conductor Range From #8 AWG Solid Through 500 KCMIL Plus 1/2 , 5/8 And 3/4 IN Copper Bonded Ground Rods, UL467 Listed, Acceptable For Direct Burial In Earth And Concrete, Prefilled With PENETROX Compound And Strip Sealed, Tools, Die Set Catalog Number, And (number Of Crimps): HYPRESS: Y750, PAT750-18V Tool, PU998 Die, (1), Y45 Tool, PU998 Die With PT6515 Adapter, (1), S998 Die, (1), Y46 Tool, PU998 Die With PUADP-1 Adapter, (1), P998 Die, (1), Die Index: 998 Element A, Rebar Size: #5 - #6, Ground Rod Size: 5/8 - 3/4 IN, Conductor Type: Run: Commercial Stranded Copper, Tap: Commercial Stranded Copper, Shape: 6, Conductor Size (tap Range): 3/0 AWG - 250 KCMIL, Conductor Size (run - Range): 250 - 500 KCMIL. So, the compression connector you have used there is not a listed irreversible compression connector. border:none; .col-sm-3 { Read more. font-size: 6px; The BURNDY HYGROUND irreversible compression system meets the most stringent safety and performance requirements, including those of OSHA and nuclear power plant design. transform:translateY(-3px); float:left; .profile-card-5 .profile { If there is, please cite where exactly it says it's not allowable. width:50%; Buy the grounding rod nut: it's an oval shaped brass nut with a bolt or screw in it. transform-style: preserve-3d; Or fastest delivery Tue, Feb 14 . vertical-align: top; height: 30px; background-color:#6ab04c; In electrical wiring, splicing is the process of connecting the endpoints of two or more cable conductors to join the wires together. border-radius: 50%; } } They all must be tied to each other. } Designed specifically for use with welding circuits. width:100%; In summary, NEC Sec. } z-index: -1; A warning label complying with 110.21(B) is applied to the enclosure that identifies the closest disconnecting means for any feed-through conductors.. What wire do I use to retrofit a ground wire from new range back to breaker box? } color:#fff; } position: absolute; font-family: 'Open Sans', Arial, sans-serif; -webkit-transform: translate(-50%, 0%); Irreversible splice for ground on solar? 2. clear: both; text-decoration:none; 25. 6" beyond the end of conduit and 3" beyond the wall surface. Despite the sound of it, a pigtail has nothing to do with farming, and a splice sounds complex but can be as simple as connecting two wires together. Here a wire splice will solve the problem. width:100%; .profile-card-4 .card-img-block:hover > .info-box{ .profile-card-3 .profile { .rel-container::after, .row::after { font-size: 15px; If they fall out, twist the wire nut more, Connect both the wire caps and the wires with electrical tape. border-radius:5px; The best answers are voted up and rise to the top, Not the answer you're looking for? max-width: 100px; .profile-card-4 .icon-block{ border-radius: 50%; Can I tell police to wait and call a lawyer when served with a search warrant? opacity: .4; } Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. transform: translate(-50%, 0%); text-align: center; 1/0 AWG STRANDED CONDUCTOR. This splice and tap kit is designed for NM cables such as Romex brand NM cable and provides a fast and reliable means for splicing or tapping 2-wire and 3 wire NM cables w/ground - up to 300 volts. opacity: 1; left: 11px; 3 Answers Sorted by: 3 As long as the wire is sound and is joined old and new properly, i.e., not just twisted together but secured with a twist lock or crimp connector it meets code and is fine. Bonding and grounding electrode conductors are permitted to terminate to a busbar that is sized not smaller than x 2 inches, and the busbar . 250.8 requires one of eight methods to make grounding and bonding connections. If breaker connections are moved inside the box, or the whole breaker panel is moved or re-wired, it may be that some wires entering the box no longer reach the breaker connection they are supposed to. .profile-card-3 .background-block .background { background-color: #043673; @BadgerTrucking - if you're going to recommend a "legal fix", you should be sure that what you're suggesting is a legal fix. Speaking of that here's a crazy way to do that. Perfect for distribution applications thanks to mounting carrier. transition: all 0.3s ease-out; Can I use a *ground wire only* conduit for copper data cables? Bidding the individual outlets for the new addition is relatively easy, but bidding power to feed them can take some investigation and imagination. .profile-card-1 h2 small { /*Profile Card 3*/ } float:left; } Short of measuring each connection, splice, pigtail, and tap, how will you know if you have used more percentage of space than you should in the breaker panel? Grounding Power at an Isolated Outbuilding? } Sometimes, this kind of existing NM cable whip is left protruding from the exposed edge of an otherwise finished and painted wall, and there is no means for following the cable back to its origin to attach a longer cable. Your Arizona Water Operator License will expire every 3 years. So it's really insurance for the whole, rather than the individual, at least as it relates to a surge. Can you splice a #10 bare copper ground with a irreversible crmp? and (max-device-width: 1024px) The biggest PITA I have has in my recent PV installation are irreversible ground splices. @keyframes hover { Save time, save money, Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them. Before ever attempting to provide an estimate, you must first determine how to get power from the homes existing breaker panel to the new lighting and receptacle outlets in the addition. Legal crimps are expensive mainly due to the cost of the crimp tool - if you can find someone to loan you a tool, that might make all the difference in the world, but I wouldn't get my hopes up. height: 130px; Only one wire can be connected at the breaker connection, so if multiple wires need to be placed in a breaker connection, this is the best and safest way to do it. A quality home life is essential to all of us, so I wanted to build this blog to help others improve their houses. Add to Project List. Push-in termination or lever-actuated, our solutions save time and money.Your benefits: From intercom system wiring, to electrical ovens to hazardous locations:Connecting different conductor types is quick and easy with WAGO's compact 221 Series Splicing Connector. background-color:#232323; /*Profile card 2*/ You need to look at the whole installation to see whether the wire in question is serving as a GEC. Burndy is a proud member of the Hubbell family. Cu Compression Ground Rod Connector, 3/0 Str - 250 Kcmil, 5/8" - 3/4" Rod Dia. (A) Splices, Taps, and Feed-Through Conductors. It also analyzed reviews to verify trustworthiness. H HackWork Banned .profile:hover img { We've added a "Necessary cookies only" option to the cookie consent popup. Charlie loves spreading his hard-won DIY experience with the world via this blog. Voila. Are there tables of wastage rates for different fruit and veg? animation-direction: alternate; border-radius: 50%; transform:translateY(-6px); opacity:0; With Surgency, surges are re-directed to ground. font-size:25px; Are There Alternatives To Pigtailing And Splicing? National Electric Code 312.8 Permits Splices And Pigtails. Durango, CO, 10 h 20 min from the winged horses. Does a barbarian benefit from the fast movement ability while wearing medium armor? animation-iteration-count: infinite; Tyco Electronic's Non-metallic splice and tap kits provide a fast and reliable method for splicing or tapping 2 wire w/ ground and splicing 3 wire w/ground non-metallic cables up to 300 volts. Compression joints might. display: inline-block; Short story taking place on a toroidal planet or moon involving flying. 1 Answer Sorted by: 3 You can make that splice in any junction box. Acceptable for direct burial in earth or concrete. Oh. color: #999; It is my opinion that the EGC is far more important than the GEC. How is Jesus " " (Luke 1:32 NAS28) different from a prophet (, Luke 1:76 NAS28)? }, h1 { height:368px; color: #fff !important; I looked into the crimping tool and it is mighty expensive. .profile-card-5 .card-img-block:hover img { } .card-body{ He would always loosen the burndy to insert his ground wire and wasn't talented enough to tighten it back up. Solutions. text-align: center; (1) Splicing shall be permitted only by irreversible compression-type connectors listed as grounding and bonding equipment or by the exothermic welding process. display: block; } Required fields are marked *. width: 120%; To subscribe to this RSS feed, copy and paste this URL into your RSS reader. And the other permitted methods are rather difficult to pull off (for us mortals). color: #ffffff; transition-duration: $duration; } color:#fff; -webkit-transform: scale(1.1); 250.64 (C) "GEC's shall be installed in one continuous length without a splice or joint except as permitted in (1) and (2) (1) Splicing shall be permitted only by irreversible compression-type connectors listed as grounding and bonding equipment or by the exothermic welding process. position: absolute; So the rule was changed to irreversible and that ended the problem. max-width: 100px; .rel-container img{ animation-timing-function: linear; border-radius:4px; .thumbnail { font-size: 15px; -webkit-transition: all 1s ease; Fittings and connectors shall be used only with the specific wiring methods for which they are designed and listed. and (orientation : portrait) { The reason they require it to be irreversibly bonded throughout all connections, is to guarantee that the inverter has a reference to derive its grounded DC conductor, no matter what anyone might do with ground bars on intermediate equipment. This is a permanent, legal fix. The easiest thing to do is to go to Home Depot and buy a grounding rod. margin-top:10px; font-weight:300; There is a product available that at first glance appears to be the cure-all for so many NM cable woes, such as when a NM cable is too short to reach its destination. I went to Home Depot and was told that they only carried a temporary solution (see attached photo) and that I should seek a code compliant connector. Partner is not responding when their writing is needed in European project application. Burndy is a proud member of the Hubbell family. Replacing that language with REPAIR wiring only. } transition: all 0.6s ease; width: 32px; top: -62px; } Combine any conductor types and sizes. } transform: scale(1.1); Consider that the hot and neutral is already joined there so the ground connection does not degrade that circuit and is quite proper. 6" beyond the end of conduit and 3" beyond the wall surface. cursor: pointer; .profile-card-4 .card-text{ Fortunately, no. } } max-width: 75px; The Difference Between 12/2 and 12/3 Romex? So that a NM cable accidentally punctured with a screw or nail or nicked while fishing a wall could still qualify for this splicing procedure. } transform: scale(2.8); /*transform: scale(1.1); Morris Products UF Direct Burial Electrical Splice Kit - Includes Brass Connector, Heat Shrinking Tube - 14/3, 12/3 Min, 8/3 Max - Moisture-Proof Electrical Connection - Submersible, Raintight 4.3 (221) $1855 - $7690 FREE delivery Gardner Bender HSB-28 Cable Splice Kit, 8-2 AWG, Black 4.6 (756) $1124 $12.35 Grounding irreversible compression splices Designed for grounding applications Each conductor element has an inspection probe hole and a center stop to ensure proper cable insertion UL467 listed Acceptable for direct burial in earth or concrete Buy it with + Total price: $187.96 Add all three to Cart Some of these items ship sooner than the others. -webkit-transform-style: preserve-3d; Features: Irreversible Compression Ground Tap Figure 6 Can Be Used As A Tap Connector Or As A Tap Splice Connector, Four Die Sets And Eight Connectors Can Accommodate A Conductor Range From #8 AWG Solid Through 500 KCMIL Plus 1/2 , 5/8 And 3/4 IN Copper Bonded Ground Rods, UL467 Listed, Acceptable For Direct Burial In Earth And Concrete, HYGROUND Grounding Irreversible Compression Splice; Accommodates: 4/0 str. position: relative; padding:7px 20px; : -webkit-transform: scale(1.8); APPLICABLE STANDARD IEEE 323, IEEE 344, IEEE 383, NEC. float: left; height:100%; animation-name: shadow; Electrical Certification. position: relative; top: 105px; } Making statements based on opinion; back them up with references or personal experience. If you do see any issues, there are some easy fixes. (2) Sections of busbars shall be permitted to be connected together to form a grounding electrode conductor. Then drive the grounding rod into the ground very close to the grounding wire with 3 inches of rod protruding from the ground, and then use the grounding rod nut and insert the grounding wire into the side without the screw/bolt. animation-name:hover; For a better experience, please enable JavaScript in your browser before proceeding. .profile-card-4 i { transform: translateY(6px); Only worth it if your doing this on a regular basis. .profile-card-5 h6{ } } padding: 5px; Can you splice #8 stranded ground with #10 solid ground? position: absolute; padding: 0 8px; 0% { transition-duration: 350ms; Please try again. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? /* HOVER */ Eliminate the need to drive a new ground rod these clamps connect grounding wire to an existing flat grounding surface, such as the lid of an electric meter box. } } Connect the wires together to the pigtail wire with a wire nut and run the pigtail wire to the breaker connection and screw it down. I don't even think it does that. line-height: 30px; This is only true in jurisdictions where the 2011 or earlier Code cycles remain the standard. color: #ffffff; It's just one part of the continued over emphasis in the importance of grounding. transform: translateY(3px); I am looking for an irreversible method to splice (2) #2Al conductors (or (2) #4 Cu) that is rated for grounding and doesn't require a crimper. When splicing wires in a breaker panel, keep these two things in mind: 1) A wire nut or other approved connector must be used so that the connection is safe. .profile-card-2 .icon-block a{ } border:none; background-color: #ffffff; } position: absolute; But one NEVER forgets hammering a grounding rod into the ground with a manual t-post driver. left: 5%; By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. text-align: center; display: block; Where the wiring method is conduit, tubing, Type AC cable, Type MC cable, Type MI cable, nonmetallic-sheathed cable, or other cables, a box or conduit body shall be installed at each conductor splice point, outlet point, switch point, junction point, termination point, or pull point, unless otherwise permitted in 300.15(A) through (L). Also that grounding rod will be tough to drive into the ground. color:#6ab04c; Unfortunately, unless you are willing to re-wire whole sections of a circuit, there often isnt an alternative solution. margin-bottom: 16px; } .profile-card-3 .card-content { .img-responsive{width:150px;} This splice and tap kit is designed for NM cables such as Romex brand NM cable and provides a fast and reliable means for splicing or tapping 2-wire and 3 wire NM cables w/ground up to 300 volts. animation-delay: 0.3s; YGHS25 Compression Grounding Splice. 2020 NEC 250.64.C. top: 50%; : left: 50%; top: 100%; } background:rgba(217,11,225,0.6); left: 15%; transform: translateY(6px); .profile-card-2 .profile { 100% { and (-webkit-min-device-pixel-ratio: 1) { Is there a solution? With this information, you can look in your own breaker box, see if it is compliant and correct it if it is not or call an electrical professional. To learn more, see our tips on writing great answers. Inhibitors, Contact Aids, Sealants & Paint. adding a ground wire to a 2-wire breaker panel. The use of a crimp sleeve is in essence an irreversible means, just like the acron clamps you can get where the head break off (approved to be buried in walls) or butt splices that you can't reverse (again approved to be buried in a wall). If an existing 15- or 20-amp branch circuit is available where the new addition is about to abut the home, the contractor can appoint this existing branch circuit as the new feed for the room additions lights and receptacles. The manufacturers of these kits generally claim the product will work with NM cables manufactured after 1990. Learn more about Stack Overflow the company, and our products. margin-top:10px; If you are looking in your own breaker box and you want to make sense of the spaghetti soup in there or if you are looking to see if your breaker box is compliant, stick with this article to give you all the information you need. overflow: hidden; position:relative; and (orientation: landscape) The region and polygon don't match. I imagine that this depends on the use case. .profile-card-3 .icon-block a{ Low Pressure Hydraulic Tools & Accessories, View AllData & CommunicationsCategories, Low Pressure Hydraulic Tools and Accessories, Heat Shrink Tubing, End Caps, Installation Accessories, View AllElectrical & ElectronicCategories, View AllCompression Connectors and TerminalsCategories, View AllGrounding and BondingCategories, View AllMechanical Connectors and TerminalsCategories, View AllTools, Dies & AccessoriesCategories, View AllWire/Cable/Hose ManagementCategories, Physical Attribute - Number of Crimps Required, 250 kcmil;300 kcmil;350 kcmil;400 kcmil;450 kcmil;500 kcmil. .profile-card-5 .btn-primary{ background-color: #ffffff; That is because the only time you are now permitted to use the device is for repair work and not for extending wiring (rewiring work) when the wiring is too short. It references one point in the electrical system to earth and 0 V intentionally and if that doesn't happen you end up with a rats nest of unintentional "faults" over your building, neighborhood, county and so on. overflow: hidden; The splice kits they sell for underground splicing are legal as well. Your email address will not be published. border: 3px solid rgba(255, 255, 255, 1); border: 2px solid rgba(255, 255, 255, 1); Top subscription boxes right to your door, 1996-2023, Amazon.com, Inc. or its affiliates, Learn more how customers reviews work on Amazon. .button:hover { padding: 15px 25px; } How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Low Pressure Hydraulic Tools & Accessories, View AllData & CommunicationsCategories, Low Pressure Hydraulic Tools and Accessories, Heat Shrink Tubing, End Caps, Installation Accessories, View AllElectrical & ElectronicCategories, View AllCompression Connectors and TerminalsCategories, View AllGrounding and BondingCategories, View AllMechanical Connectors and TerminalsCategories, View AllTools, Dies & AccessoriesCategories, View AllWire/Cable/Hose ManagementCategories, Physical Attribute - Number of Crimps Required. .profile-card-4 .icon-block a{ } transform: scale(1.1); Connecting different conductor types is quick and easy with WAGO's compact 221 Series Splicing Connector. text-align:center; position: absolute; } 50% { What codes will back up either way. FREE delivery Thu, Feb 16 on $25 of items shipped by Amazon. (1) Splicing of the wire-type grounding electrode conductor shall be permitted only by irreversible compressiontype connectors listed as grounding and bonding equipment or by the exothermic welding process. animation-duration: 1.5s; If it was it would be perfectly legal according to the NEC. Grounding electrode conductor (s) shall be installed in one continuous length without a splice or joint except as permitted in (1) and (2): (1) splicing shall be permitted only by irreversible compression-type connectors listed as grounding and bonding equipment or by exothermic welding process animation-duration: 1.5s; The PermaGround connector system is ILSCO's solution meeting the bonding and grounding requirements of national and local electrical codes. HYGROUND Grounding Irreversible Compression Splice; Accommodates: 4/0 str. position: absolute; font-size: 16px; content: ''; .profile-card-3 .icon-block{ overflow: hidden; HYLINK [T] BRAND. It just adds one more electrode to a large network of electrodes. 1 2 Next E Esthy Senior Member Nov 7, 2007 #1 Where can I find irreversible crimp connectors for solid AWG 4 and AWG 6? What is the point of Thrower's Bandolier? } If you are an electrical contractor that has ever wired a room addition, you will likely be familiar with this process. Pigtailing is a technique used in electrical wiring to lengthen wires that are too short in a breaker box to be able to reach where it needs to go. Mixed-up strands in a bowl of spaghetti are just what you want, but when it comes to a breaker panel, you want neat and safe. How do you get out of a corner when plotting yourself into a corner, Topological invariance of rational Pontrjagin classes for non-compact spaces, Minimising the environmental effects of my dyson brain. background-color: #555; And the splice can only be concealed when it is part of a NM cable fished behind a wall or floor. border-radius:5px; When this happens, the wire must meet the minimum standards for both uses, including size and continuous or irreversibly spliced. YS-T MODEL. transform: translateY(-6px); border-radius:5px; Except as provided in 250.30(A)(5) and (A)(6), 250.30(B)(1), and 250.68(C), grounding electrode conductor(s) shall be installed in one continuous length without a splice or joint. Also welcome to Diy.SE! font-weight:600; width: 30px; width:100%; In fact, I have seen 2 grounding rods driven into the ground and both of them are connected by the grounding wire And it had been inspected and approved. Please wait, preparing to download your file. line-height: 2; These connectors are based on either compression or mechanical set-screw technologies. } Electrical: How do I connect copper ground wire to metal wire passing through switch box? opacity: 0.9; Learn 156 of the most important 2020 NEC changes by having Code-based Q&A delivered by text or email three times a week. line-height: 30px; display: block; .profile-card-5 h4 { Is a collection of years plural or singular? } Provided these are done correctly, and with wire nuts, it is allowed. font-size:14px; .profile-card-4 .card-img-block{ opacity: 0; .profile-card-1 .card-content { height:150px; position: relative; In some states and jurisdictions, only an electrical professional, usually approved by a council, is allowed to make changes and electrical repairs in a home. Click to expand. Connect and share knowledge within a single location that is structured and easy to search. Unfortunately our setup would require us to run the new ground with new ground rods in a new location because the current path of the ground is no longer accessible (it's under concrete). Here is a glimpse of Burndys Solutions for the different Markets. Here is a glimpse of Burndys Solutions for the different Markets. The total of all conductors installed at any cross-section of the wiring space does not exceed 40 percent of the cross-sectional area of that space. height:150px; @media only screen 5.0 out of 5 stars 4. Here is what the National Electrical Code says: 250.64 Grounding Electrode Conductor Installation. padding: 1 1 1 10px !important; } Mike Holt of Mike Holt Enterprises has a great 2.46 minute YouTube video explaining how to do this: Essentially, he states that the box itself will tell you. font-size:14px; }. background: #efefef; With the independent equipment per EN 60998 approval, the 224 Series Inline Connectors are the ideal solution for nearly all household applications and similar building installations. text-align: center; . width:100%; border: 1px solid #e3173e !important; .title { Manufacturers also claim these little miracle workers are designed and approved for use in rework projects within existing structures, referring to NEC 334.40(B) as their source. Is "exothermic welding process" a fancy term for "soldering"? margin:0 5px; So, the compression connector you have used there is not a listed irreversiblecompression connector. when service neutral already provides a lower resistance path to absorb excess voltage and is bonded to earth at the transformer. : text-align: center; } .profile-card-3 { But yes the voltage drop on primary neutral still presents some voltage to earth on your grounded service conductor, and some primary current can flow through your service neutral, and through any ground path it may find on your premises, whether you have a GES or not. It only takes a minute to sign up. .profile-card-5 h4 { } Surgency for commercial, industrial, and residential applications protects equipment by capturing surges before they cause damage. } It can also be used to combine multiple wires together, leaving one conductor wire to attach in the right place in the panel. rev2023.3.3.43278. padding-left:20px; } line-height: 30px !important; } Help others learn more about this product by uploading a video! border: 1px solid rgba(204, 204, 204, 0.5); transform: translateY(6px); The 243 Series Micro PUSHWIRE Connectors are specifically designed for low-voltage installations. : Can I use a "compliant connector" or do I need to run a whole new ground wire? float:left; @media only screen } &:before { Because for some unknown reason CMP 5 seems to think that a GEC is more important than an EGC. Here is a glimpse of Burndy's Solutions for the different Markets. text-transform:uppercase; Utility Switching & Fusing. top: 0; } .profile-card-5 .card-img-block { Is it a bug? $12.25 $ 12. height: 100%; @include hardwareAccel(); Section 334.40(B) in the 2014 NEC also removed permission for using the device as part of rewiring as the previous Code cycle(s) had stated. Prefilled with Penetrox compound and strip sealed. transform: translate(-50%, 0%); The Code allows the grounding electrode conductor splicing if it is done correctly. The manufacturers of these kits generally claim the product will work with NM cables manufactured after 1990.