Forensic Engineers and Consultants

Archive: Lightning Damage

Testing…testing… Is this thing on?

Many people just take for granted that something is just going to work, and in many cases assume that it will work forever.  One such device that does not get enough attention is the Ground Fault Circuit Interrupter (GFCI).   Simply put, a GFCI is a protective device that compares the current flowing on the hot and neutral wires of the circuit and will “trip” to disconnect power to the circuit if a small imbalance of current is detected.  The imbalance of current is an indication of a dangerous alternate path for the current to flow from a damaged line cord or a fault inside an appliance and constitutes a shock hazard to a person. Read More

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Ready, Set, Fly! – Understanding Another Technology for Forensic Investigations

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This is the first blog in a series on integrating new technologies into the process of forensic investigations.  Documenting the scene of an incident accurately, efficiently, and safely is a key step in every investigation.  Busy roadways and unstable structures present hazards to the investigator during the investigation process. The use of remote sensors can reduce these risks and provide data that otherwise could not safely be obtained. Read More

Grounding versus Bonding – Understanding the Difference in Building Electrical Systems

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While a teenager might be very familiar with being “grounded”, there is confusion over the meaning of the word in the electrical sense. In building electrical systems, “grounding” and “bonding” are two terms that are often misunderstood. Improper application of the concepts of grounding and bonding may create lethal shock and fire hazards. “Earthing” is a term which comes from the European International Electrotechnical Committee (IEC). Earthing is synonymous with grounding but often thought to have a different meaning. Read More

Using Historical Weather Data to Investigate Lightning Strike Claims

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Property damage claims to sensitive electronic equipment due to a direct or nearby lightning strike are frequently difficult to substantiate to a high degree of confidence.  Electrical damage to common consumer electronic equipment (televisions, computers and accessories, wireless routers, telephones, fax machines, electronic security systems, etc.) is most frequently not visible to the naked eye during a physical inspection of the allegedly failed equipment.  So, how do we investigate an electrical loss when an insured claims he has $30,000 worth of non-functioning equipment? Read More

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