Dca Commentary 2003
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DCA Commentary on Dielectric Isolation
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MatemáTicas Del Siglo XXI
Este documento describe las principales áreas de las matemáticas como el álgebra, análisis matemático, geometría y topología, estadística e investigación operativa, y métodos numéricos. Explica cómo las matemáticas se estudian en muchas carreras como ciencias, ingeniería, salud y más. Finalmente, destaca los muchos usos de las matemáticas en dominios como música, comunicaciones, diseño, ciencia, tecnología e industria.
Gas Tite Flash Shield Product
GasTite Advanced Flash Shield is a product designed to protect workers from flash fires and explosions during gas line work. It uses a flexible shield made of flame-resistant materials to create a barrier between the worker and any potential flash, directing any flames or explosions away from the worker. The shield is lightweight and portable to allow workers mobility during installation and repair of gas lines.
Ansi Gptc Z380.1 2009 192 467
The document provides guidance on external corrosion control for buried or submerged pipelines, specifically regarding electrical isolation. It states that pipelines must be electrically isolated from other underground structures unless they are interconnected and cathodically protected as a single unit. Insulating devices can be installed where needed to facilitate corrosion control. Pipelines must also be isolated from metallic casings, with some exceptions. Inspection and testing is needed to ensure adequate isolation. Precautions must be taken if insulating devices are installed in areas with combustible atmospheres. Pipelines near electrical transmission towers also require protection from fault currents or lightning.
Code Question
The document is an answer to a previous code question regarding bonding of gas piping systems. It summarizes that underground gas piping systems cannot be used as grounding electrodes according to NEC code. Gas utilities typically isolate underground gas piping from above-ground portions using dielectric fittings to prevent using the piping as a neutral conductor. While bonding of above-ground metal gas piping is required, informational note 1 regarding bonding all piping providing additional safety is not a mandatory code requirement.
Gas Pipe Becomes Grounding Electrode
A gas pipe was found to be acting as both a grounding electrode and carrying parallel current intended for the neutral conductor in a home's electrical system. The pipe had become electrically charged due to a defective connection to the neutral conductor in the main electrical panel. This created a safety hazard, as anyone touching both the pipe and an ungrounded appliance could potentially receive an electric shock. The solution was to disconnect the gas pipe from the electrical system and ensure proper grounding and bonding of system components.
Bonded Vs. Grounding
Bonded vs. Grounding discusses definitions changes in the 2008 code relating to bonding and grounding. Specifically, it examines changes to Article 100 which defines grounding as connecting to the earth or another conducting body that serves in place of the earth.
Bonding Wire Connection
Bonding is the practice of electrically connecting all exposed metal parts of electrical equipment together to reduce voltage differences that can cause shock or fire hazards. It involves connecting equipment enclosures, frames of devices like outlets and switches, metal piping, and other metal objects to the electrical grounding system. Proper bonding helps ensure that faults in wiring or equipment will cause circuit protection to quickly operate by providing a low-resistance path for fault currents.
Placing The Bonding Clamp
The clamp is placed around the meter's base just above the meter. It should fit snugly and not be loose. Make sure the clamp's locking mechanism is fully engaged to properly secure the meter.
Recommended
MatemáTicas Del Siglo XXI
Este documento describe las principales áreas de las matemáticas como el álgebra, análisis matemático, geometría y topología, estadística e investigación operativa, y métodos numéricos. Explica cómo las matemáticas se estudian en muchas carreras como ciencias, ingeniería, salud y más. Finalmente, destaca los muchos usos de las matemáticas en dominios como música, comunicaciones, diseño, ciencia, tecnología e industria.
Gas Tite Flash Shield Product
GasTite Advanced Flash Shield is a product designed to protect workers from flash fires and explosions during gas line work. It uses a flexible shield made of flame-resistant materials to create a barrier between the worker and any potential flash, directing any flames or explosions away from the worker. The shield is lightweight and portable to allow workers mobility during installation and repair of gas lines.
Ansi Gptc Z380.1 2009 192 467
The document provides guidance on external corrosion control for buried or submerged pipelines, specifically regarding electrical isolation. It states that pipelines must be electrically isolated from other underground structures unless they are interconnected and cathodically protected as a single unit. Insulating devices can be installed where needed to facilitate corrosion control. Pipelines must also be isolated from metallic casings, with some exceptions. Inspection and testing is needed to ensure adequate isolation. Precautions must be taken if insulating devices are installed in areas with combustible atmospheres. Pipelines near electrical transmission towers also require protection from fault currents or lightning.
Code Question
The document is an answer to a previous code question regarding bonding of gas piping systems. It summarizes that underground gas piping systems cannot be used as grounding electrodes according to NEC code. Gas utilities typically isolate underground gas piping from above-ground portions using dielectric fittings to prevent using the piping as a neutral conductor. While bonding of above-ground metal gas piping is required, informational note 1 regarding bonding all piping providing additional safety is not a mandatory code requirement.
Gas Pipe Becomes Grounding Electrode
A gas pipe was found to be acting as both a grounding electrode and carrying parallel current intended for the neutral conductor in a home's electrical system. The pipe had become electrically charged due to a defective connection to the neutral conductor in the main electrical panel. This created a safety hazard, as anyone touching both the pipe and an ungrounded appliance could potentially receive an electric shock. The solution was to disconnect the gas pipe from the electrical system and ensure proper grounding and bonding of system components.
Bonded Vs. Grounding
Bonded vs. Grounding discusses definitions changes in the 2008 code relating to bonding and grounding. Specifically, it examines changes to Article 100 which defines grounding as connecting to the earth or another conducting body that serves in place of the earth.
Bonding Wire Connection
Bonding is the practice of electrically connecting all exposed metal parts of electrical equipment together to reduce voltage differences that can cause shock or fire hazards. It involves connecting equipment enclosures, frames of devices like outlets and switches, metal piping, and other metal objects to the electrical grounding system. Proper bonding helps ensure that faults in wiring or equipment will cause circuit protection to quickly operate by providing a low-resistance path for fault currents.
Placing The Bonding Clamp
The clamp is placed around the meter's base just above the meter. It should fit snugly and not be loose. Make sure the clamp's locking mechanism is fully engaged to properly secure the meter.
NJ DCA Commentary
This is a 2 page document. The summary is unable to provide any meaningful information as the document contains no text, only page numbers. More context would be needed to generate an informative summary.
Ansi Gptc Z380.1 2009 192 467
The document provides guidance on external corrosion control for buried or submerged pipelines, specifically regarding electrical isolation. It states that pipelines must be electrically isolated from other underground structures unless they are interconnected and cathodically protected as a single unit. Insulating devices can be installed where needed to facilitate corrosion control. Pipelines must also be isolated from metallic casings, with some exceptions. Inspection and testing is needed to ensure adequate isolation. Precautions must be taken if insulating devices are installed in areas with combustible atmospheres. Pipelines near electrical transmission towers also require protection from fault currents or lightning.
Outside Gas Meter
The outside gas meter has a bonding wire attached to it. This bonding wire grounds the gas meter to the electrical system grounding. Properly bonding gas meters helps prevent gas leaks, fires, and explosions that could result from stray electrical currents or lightning strikes on underground gas lines.
Irc Bonding Diagram
The document discusses an IRC commentary bonding diagram. It appears to relate to construction codes and regulations regarding bonding of electrical systems. The diagram likely shows the required bonding connections between various metal components in a building according to IRC commentary guidelines.
Gas Pipe Becomes An Equipment Ground
A gas pipe was mistakenly used as an equipment ground at a commercial building. The National Electrical Code requires that gas piping not be used for grounding electrical equipment. Using a gas pipe for grounding can corrode the pipe and potentially lead to a gas leak or explosion. Proper grounding helps ensure safety and prevents hazardous electrical shocks.
Ifcg 2009
The International Fuel Gas Code establishes minimum regulations for fuel gas systems and gas-fired appliances that are installed and utilized within buildings. It provides requirements that aim to protect public health, safety and welfare insofar as they are affected by the design, installation, and inspection of fuel gas piping and equipment. The code also regulates gas utilization equipment and related accessories as installed and utilized within individual structures.
Gas Meter With Dielectric Union
This gas meter features a dielectric union to electrically isolate the gas line from the meter body. Dielectric unions help prevent corrosion by ensuring there is no direct electrical connection between the piping and meter. The union uses non-conductive material to separate the line and meter electrically while still allowing gas to flow through.
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NJ DCA Commentary
This is a 2 page document. The summary is unable to provide any meaningful information as the document contains no text, only page numbers. More context would be needed to generate an informative summary.
Ansi Gptc Z380.1 2009 192 467
The document provides guidance on external corrosion control for buried or submerged pipelines, specifically regarding electrical isolation. It states that pipelines must be electrically isolated from other underground structures unless they are interconnected and cathodically protected as a single unit. Insulating devices can be installed where needed to facilitate corrosion control. Pipelines must also be isolated from metallic casings, with some exceptions. Inspection and testing is needed to ensure adequate isolation. Precautions must be taken if insulating devices are installed in areas with combustible atmospheres. Pipelines near electrical transmission towers also require protection from fault currents or lightning.
Outside Gas Meter
The outside gas meter has a bonding wire attached to it. This bonding wire grounds the gas meter to the electrical system grounding. Properly bonding gas meters helps prevent gas leaks, fires, and explosions that could result from stray electrical currents or lightning strikes on underground gas lines.
Irc Bonding Diagram
The document discusses an IRC commentary bonding diagram. It appears to relate to construction codes and regulations regarding bonding of electrical systems. The diagram likely shows the required bonding connections between various metal components in a building according to IRC commentary guidelines.
Gas Pipe Becomes An Equipment Ground
A gas pipe was mistakenly used as an equipment ground at a commercial building. The National Electrical Code requires that gas piping not be used for grounding electrical equipment. Using a gas pipe for grounding can corrode the pipe and potentially lead to a gas leak or explosion. Proper grounding helps ensure safety and prevents hazardous electrical shocks.
Ifcg 2009
The International Fuel Gas Code establishes minimum regulations for fuel gas systems and gas-fired appliances that are installed and utilized within buildings. It provides requirements that aim to protect public health, safety and welfare insofar as they are affected by the design, installation, and inspection of fuel gas piping and equipment. The code also regulates gas utilization equipment and related accessories as installed and utilized within individual structures.
Gas Meter With Dielectric Union
This gas meter features a dielectric union to electrically isolate the gas line from the meter body. Dielectric unions help prevent corrosion by ensuring there is no direct electrical connection between the piping and meter. The union uses non-conductive material to separate the line and meter electrically while still allowing gas to flow through.