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Bonding, on the other hand, is a permanent connection of metal objects (such as pipes, metal framing, metal appliances, etc. ) FAC is a short length of tubing designed to connect the gas-distribution pipe to the gas-burning device. CSST flexible gas lines in the attic are a prime candidate for damage from lightning strikes. Some manufacturers of CSST offer a product with a black outer "arc-resistant" jacket, which tells you it's an arc-resistant product. Bonding gas piping is an essential task for ensuring the safest operation of residential and commercial buildings.
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Other options, including tinned copper, which is copper coated with tin, may also be a suitable grounding wire solution for wet environments and high-temperature situations. When bonding gas lines, it is important to use a bond that is designed and rated specifically for gas service. This is because they are connected to a bonded (if properly installed) gas-distribution system. Insulated copper is better suited for pulling through conduit, thanks to its PVC or HMWPE insulation, and is better at absorbing abrasion damage than a bare wire. THEN CALL 911 & YOUR LOCAL GAS SUPPLIER. A bonding wire is designed to connect components that could absorb electrical currents. We at JNR Plumbing LLC want our clients and our readers to understand the safety involved within your home. What about the black stuff? Various lawsuits lead to these technical bulletins being issued. What size bonding clamp for bonding gas piping? The bonding connection must be made on the house side of the gas meter, however.
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After receiving this recent request, "…I have CSST that I believe is not grounded and would like an estimate for grounding it…", we decided to write this blog and explain proper grounding for CSST and other gas supply lines. When it comes to proper bonding and grounding of gas lines, NFPA 54 requires that all metallic non-flexible piping connected to a natural or liquefied petroleum (LP) fuel system must be bonded to an approved ground source such as a cold water main or building steel frame. Interested in one of our services? Building Codes requiring bonding of CSST flexible gas lines came into practice no earlier than 2007. 14(b)] parallels Sec. The main difference is a grounding wire is designed to carry current at any time necessary and carry that current into the ground. These homes may, or may not have bonded gas lines. Book your home inspection by calling 818-298-3405 or book online here. Additional Information on CSST and bonding. For these reasons, you should never allow an installer to ground your solar system, or any other electrical equipment, to SDG&E meters, pipes or valves.
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Yellow CSST gas pipe manifold. All CSST manufacturers today recommend the bonding of CSST with the electrical ground system of the house should be completed with a copper 6 AWG wire or similar. As a gas pipe is also connected to the house by running underground, it seems logical that a gas pipe is a good place to connect a grounding wire. The NEC states in Section 250. The risk is tremendously reduced when CSST flexible gas lines are "bonded " (BONDED DEFINED: Connected with wiring to take electrical current away from CSST flexible gas lines in the event of a lightening-strike on or near the home). Corrugated Stainless Steel Tubing (CSST) is a flexible, stainless steel pipe used to supply natural gas and propane in residential, commercial and industrial structures. In the 2000s, manufacturers started manufacturing a different type of CSST with a black exterior sheathing (see image below) which has different electrical and chemical properties. After years of inspecting, we had never seen grounding wires connected to a gas meter before. There are fewer leaks with CSST due to long runs and very few connections. CSST either has a yellow jacket or a black jacket. It is engineered to significantly decrease the potential for lightning-induced damage to fuel gas piping systems IF, installed correctly. After all, we only have licensed technicians specifically trained in servicing residential homes and commercial properties. When our natural gas crews are out in the field conducting inspections, doing maintenance or repairs, they are always on the lookout for safety issues.
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The cost to have a qualified electrician properly bond CSST per the manufacturer's specifications is most often inexpensive, however it can be more difficult if the home has a finished basement with drywall ceilings since the bonding normally takes place at accessible gas plumbing from the basement. The photo below shows the two different materials. However, some disagree. In recent years, when there were many reports of damage and fires caused from CSST use, the National Electrical Code (NEC) decided to insert a new section, which required that gas lines should be bonded directly to the service grounded conductor of all homes. There are documented fire inspections where it was believed a lightning-strike caused damage to unbonded CSST, resulting in gas-fueled fire damage. By placing the metallic portion of yellow CSST at permanent ground potential (bonding), the risks of possible damage and/or fire related to nearby lightning strikes is greatly diminished. Past requirements called for the bonding connection to be made at the upstream-most point of CSST but this is no longer the case. Side note: I heard a rumor that the city of Maple Grove does not allow the installation of CSST. Older CSST generally had a yellow insulation jacket. So let's take a look at the different. This bond ensures that all portions of the system are at the same electrical potential, reducing the risk of an electrical shock. My question is.. where should i move the existing ground wire to in the panel? Without a ground wire, these systems come with a higher risk of shock hazards. It's often confused as some sort of grounding connection.
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Grounded: Connected to earth or to some conducting body that serves in place of the earth. That version of the NEC was the first to require an intersystem bonding terminal for low-voltage communication equipment such as television cables, satellites, and phones. We have been offering gas line bonding services to residents and businesses in Raleigh for the past two decades and provide our services at affordable rates. Due to this uncertainty, we feel the need for a proposal for the 2002 NEC to clarify which Table to use when sizing this conductor. 250-80 in the 1971 NEC) mandates you must bond all interior metal piping (subjected to energization) to the service equipment ground and the common grounding electrode conductor at the service enclosure (if it's of sufficient size) or to one or more of the grounding electrodes. You should size the conductor just as you would size it if it were a metal water pipe isolated from earth ground because of a nonmetallic underground water supply system. The installation requirements for gas pipe and gas appliance connectors are very different. This article was authored by Matthew Steger, ACI - owner of WIN Home Inspection in Lancaster, PA. No article, or portion thereof, may be reproduced or copied without prior written consent of Matthew Steger. CSST gas lines are covered in California Plumbing Code Section 1211. During the electrical grounding process, a wire is connected to a metal rod, or another object, that is placed in the ground. The building code doesn't have a ton of rules for CSST; they mostly say to follow the manufacturer's instructions. Protect Your Home From Potential Gas Leaks & Fire. I plan to connect the new grounding rod in the panel where the current ground wire is (as shown in the linked picture) at the feed side of the panel. We do realize that Bonding must be installed by a licensed professional, particularly an Electrician.
2000's – Reports of lightning damage evaluated. Only an inspection will determine if the gas lines are safely bonded as required by today's Building, Plumbing & Electrical Codes. The manufacturers of CSST have changed their installation requirements because they've learned that the old methods weren't good enough. Depending upon the home, accomplishing this task can range between being very easy to nearly impossible. Not only does the newest version of the code allow CSST to be bonded anywhere, but CSST manufacturers also allow CSST to be bonded anywhere. Other Local Metal Underground Systems or Structures. If the tubing is damaged, a leak could form. Home and building owners may not always know what is best for them. In some areas, as of 2015 Home Inspectors became required to notify their clients (in writing & on the inspection form) of the presence of CSST gas lines that do not have proper bonding. Here is a short timeline of the existence of CSST's: - 1990 – CSST launch in U. S. market. A lot of people have gas line bonding problems, and most people don't have any idea what to do when they face this problem.
Metal In-ground Support Structure(s). One place that isn't a proper bonding location is the intersystem bonding terminal, which can be found at the exterior of homes that have been built in accordance with the 2008 NEC or later. CSST is a Gas-Distribution System. How can you know if you have CSST in your home? They believe you should size it from Table 250-122, determined by the size of the overcurrent protection device ahead of the circuit. Grounding to SDG&E equipment may result in the discontinuation of your gas service as a safety precaution until the problem is corrected. It may also lead to electrical shock injuries.
Bonding is the process of connecting metal piping systems together with a conductor wire to create an equipotential bond. Coated with a yellow, or in some cases, a black exterior plastic coating, CSST is usually routed beneath, through and alongside floor joists in your basement, inside interior wall cavities and on top of ceiling joists in attic spaces.
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