Home and building owners may not always know what is best for them. And if the gas piping is isolated from the furnace electrical (not likely to become energized), you don't have to bond the piping at all. So, what's the confusion all about? Bonding Water Piping. When bonding gas lines, it is important to use a bond that is designed and rated specifically for gas service. CounterStrike® or FlashShield® is a patented CSST innovation based on existing yellow CSST flexible gas piping products.
Other organizations maintain similar rules for bonding gas lines, including the National Electrical Code. 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. A) Pipe (rigid conduit of iron, steel, copper, brass, aluminum, or plastic). For more information about gas pipe bonding: Additional information about the requirements for yellow CSST bonding can be found in this bulletin: You can find our full service list under the Services tab at the top of our website: © 2019 Matthew Steger. The process also prevents sparking by giving electricity a safe place to go and preventing build-ups or arcs that could potentially damage gas lines. Building codes have something called 'grandfathering'. This standard outlines various requirements for safely installing, operating, and maintaining gas appliances. There has been some confusion on this topic because early editions of the fuel gas code were picky about this, but the current version of the code doesn't specify. Metal gas piping: NEC Sec. Nobody cares about any of this stuff until it concerns a house you own or you're buying, and then it's really important. In summary, you cannot use a metal underground gas piping system as a grounding electrode. Grounding to SDG&E equipment may result in the discontinuation of your gas service as a safety precaution until the problem is corrected. Properly bonding a gas pipe is fairly simple in most situations and should be done by a qualified electrician.
The electrical service grounding system. When corrugated stainless steel tubing (CSST) has been installed, grounding wire must be used. It is also important to inspect bonding wires regularly for any signs of corrosion or damage, and replace them if necessary in order to ensure optimal safety when using natural gas systems. In most newer homes that I inspect, I find that builders are finally getting around to bonding gas pipes and the local code enforcement officials are now requiring that the bonding exists. However, grounding to SDG&E gas pipes, meters or service risers is prohibited according to the California Electrical Code, Article 250, because it can accelerate metal loss from steel equipment that may result in hazardous gas leaks. CSST Bond Wires or Clamps Shall NEVER Be Connected to: - Natural gas meters or facilities. Yellow CSST piping should not be confused with gas appliance connectors. Whether it's used to heat homes or run water heaters, dry clothes, help cook food on a gas range, or do myriad other things, natural gas has become a cost-effective and reliable energy option for many Americans.
In modern new construction, some areas rely on the plumbers installing CSST to bond the material upon installation but, it appears that, most plumbers don't understand bonding and the electrical codes. CSST should not be confused with natural gas appliance flexible connectors. Depending on where you're working, you should check with the AHJ for their official interpretation. Flexible connectors are used to attach moveable appliances to the gas piping system. Additionally, bond wires should be inspected regularly and replaced if they become damaged or corroded in order to maintain optimal safety levels. The main difference is a grounding wire is designed to carry current at any time necessary and carry that current into the ground. This often boils down to how visually accessible the home's gas piping is in the basement. 3 "Gas piping shall not be used as a grounding conductor or electrode. CSST (Corrugated Stainless Steel Tubing) is a commonly found type of gas line, which home inspectors will check when examining proper bonding. Now all CSST manufactures recommend that direct bonding of CSST with the house electrical system ground should be done with a 6 AWG copper wire or something equal to it. They may also short-circuit electronics and appliances during a surge. How to tell if a gas line is bonded?
It's often confused as some sort of grounding connection. This sizing prevents the grounding wire from overloading, causing damage to the ground wire or the line it is protecting. The D&I Guide specifically calls for the system to have a minimum 6-gauge bonding wire between the CSST and the building's grounding electrode in order to reduce the chances of a natural gas leak or fire from electrical/lightning energy. CSST has a proven resistance to leaks due to far fewer connections made during installation. For example, for a 3/4 inch copper pipe, a 1/0 AWG bonding wire would be appropriate. Keep in mind that gas appliance connectors are not CSST and do not require bonding.
A CSST brass fitting, a steel manifold or rigid pipe component connected to a CSST fitting. During routine checks of our equipment, we have discovered that some solar systems, alarm systems, cable and other equipment are being electrically grounded to natural gas equipment. 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. After years of inspecting, we had never seen grounding wires connected to a gas meter before. 52 of the National Electric Code, which lists the following: - Metal Underground Water Pipe. If any issues are present, contact an experienced contractor immediately to repair or replace the bonding materials in order to ensure maximum safety when using natural gas systems. 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.
Other Listed Electrodes. I am going to hook up a newly installed grounding rod so will not be relying on the water service as the ground any longer. BUT that does not mean they are safe. First, CSST stands for Corrugated Stainless Steel Tubing. The most common types are: - Yellow corrugated stainless steel tubing (CSST). 250-104(b) of the NEC and NFPA 54, Sec. In more recent years, however, all manufacturers of CSST have made it a point to release technical bulletins to CSST installers ensuring they are aware that yellow CSST must be bonded and showing how it must be done. However, if you are looking for one in the Raleigh area, you should consider the Volt Doctors.
During the electrical grounding process, a wire is connected to a metal rod, or another object, that is placed in the ground. CSST is typically routed beneath, through or alongside floor joists in the basement, inside interior wall cavities and on top of ceiling joists in attic spaces. How else to Identify FAC: - FAC does not require bonding. 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.
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