Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is 1900 Electrical Box ?1900 Electrical Box DefinitionA 1900 Electrical Box is defined as a standard 4-inch square electrical switch box, used when a simple switch box is insufficient.Types and Capacity 1900 Electrical Box 1900 Deep Electrical BoxDesign and DimensionsThese boxes have a patented design for easy cable removal and reuse. The regular box is 4×4 inches and 1.5 inches deep, while the deep box is 4×4 inches and 2.125 inches deep.Historical BackgroundThe name “1900 Box” comes from

What is CSST Bonding ?CSST Bonding DefinitionCSST (Corrugated Stainless-Steel Tubing) bonding is defined as connecting a conductor to the CSST gas pipe and grounding system to ensure safetyNecessity of CSST BondingProper bonding reduces the risk of fires or explosions caused by lightning strikes or power surges.Proper Bonding TechniqueA bonding wire should connect to the rigid gas piping or directly to the CSST fitting, ensuring a secure and continuous path to the ground.Code ComplianceCSST bond

What is a Dead Short ?Dead Short DefinitionA dead short is when electrical current flows where it shouldn’t, with no resistance, often causing damage or hazard.Comparison with Short CircuitUnlike a short circuit, which has some resistance and reduced voltage, a dead short shows zero voltage and resistance, indicating a more severe problem.Give an exampleBolted Fault SimilarityA bolted fault, like a dead short, also exhibits zero resistance, but it specifically involves connections to ground.Grou

What is Clamping Voltage?Clamping Voltage DefinitionClamping voltage is defined as the maximum voltage allowed to pass through a surge protector before it limits further voltage, protecting connected devices from surges.Purpose and OperationSurge protectors use clamping voltage to suppress excess voltage, ensuring devices remain safe from power surges.Breakdown VoltageBreakdown voltage is defined as the minimum voltage at which an insulator starts to conduct electricity, allowing current to flow

What is Available Fault Current?Available Fault Current DefinitionAvailable Fault Current (AFC) is defined as the maximum current available during a fault condition, also known as available short-circuit current.Importance of AFC MarkingAFC must be marked with a calculation date as per the 2011 NFPA 70: NEC section 110.24.Fault Current CalculationTo calculate fault current, use the system voltage, conductor constant, and length of the service entrance conductor. Find the system voltage (E_{L-L})

Actual safety requires whole hearted cooperation, from all levels of workers involved in the work. It is need not to say, that all the people engaged in the electrical work should well aware of all safety rules and regulations related to the work they are executing. The workers executing the work should be extremely disciplined. Electrical work should not be done by wearing loose dresses.Before starting the work, the working place should be made neat and clean. The place should also be sufficien

Nobody should climb any tower carrying liveoverhead conductors. Cows or other domestic animals should not be tied with any tower legs and stay wires. Nobody should be allowed to throw any metallic strip, metallic wire, ropes and green twinges to the live over head lines. If anyconductoris snapped or dangling from the tower, should not be touched without proper shutdown and temporary earthing arrangement. In this case nobody should be allowed to come closer to the snapped or hanged conductor unt

What is Dielectric Grease?Dielectric grease is a silicone-based grease that is used in an electric circuit to protect components from dirt, moisture, and corrosion. Dielectric grease is also known as silicone grease.It is a non-conductive material used in the electrical circuit to transfer heat from the device. It is a waterproof grease and made by adding a silicone oil with a thickener.What is Dielectric Grease Used For?Dielectric grease is used to disturb the flow of electric current with the

What is a Cut Sheet?A cut sheet (also known as a spec sheet or specification sheet) is an equipment information sheet that provides and describes the specifications and/or features of a piece of equipment. These are common in the electrical industry for equipment such as motors, circuit breakers, transformers, and other electrical equipment.Any commercial electrical job typically has to have all material or equipment approved by the electrical engineers, owners, or both. A cut sheet gives you s

What is a 1900 Electrical Box?A 1900 Electrical Box is defined as a standard 4 inches (4’’) square electrical switch box which is the combination of a gas and electrical box. It is the most commonly used box when a simple switch box is not big enough. 1900 Electrical Box 1900 Combination Gas and Electrical Box Cover There are usually two types of 1900 Electrical Box are available. 1900 Electrical Box 1900 Deep Electrical BoxTwelve 10 AWG (American Wire Gauge) can be installed in a 4-