Electrical Design
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What Happens if the Neutral is Lost in the Main or Subpanel?
What Will Happen When the Neutral is Broken in the Main Panel or Subpanel? The neutral wire provides a return path for current back to the power source, completing the…
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Why Must Neutral and Ground Wires Be Bonded in the Main Panel?
Why Do Neutral and Ground Conductors Need to Be Bonded in the Main Panel? According to NEC Article 250, both the neutral and ground wires must be connected only in…
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Why are Neutral and Ground Wires Separated in a Subpanel?
Why Do Neutral and Ground Conductors Need to Be Separated in a Subpanel? According to NEC Article 250, neutral and ground wires must remain separate in subpanels. Bonding (connecting) the…
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Why are Electrical Busbars Rectangular Instead of Circular?
Why is the Preferred Shape of Busbars Rectangular or Flat Rather than Circular or Round Shaped Cables? What is an Electrical Busbar? An electrical busbar is a metallic strip or…
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How Does the Grounding System Work in Aircraft & Submarines?
How is Grounding in AC/DC Systems Used for Protection in Aircraft, Ships, and Submarines? Aircraft, ships, and submarines represent significant investments and require advanced levels of electrical protection. These vehicles,…
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What is the Right Wire Size for 90A Breaker and Load?
How to Determine the Correct Wire Size for 90A Breaker and Load Circuits Based on NEC? A 90-amp breaker is commonly used for large electrical loads like heavy-duty appliances, industrial…
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What is the Correct Wire Size for 80A Breaker and Load?
How to Determine the Suitable Wire Size for a 80A Breaker and Load Circuits Based on NEC? An 80-amp breaker is typically used for high-demand devices such as large air…
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What is the Suitable Wire Size for 70A Breaker and Load?
How to Calculate the Correct Wire Size for a 70A Breaker and Load Circuits Based on NEC? A 70-amp breaker are typically used for high-power devices like large HVAC systems,…
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IEC and BS 7671 Requirements for Consumer Unit and Distribution Board
IEC-60364 and BS-7671 Guidelines for Garage Unit, Consumer Unit and Distribution Board The IEC (International Electrotechnical Commission) and BS 7671 (British Standard for Electrical Installations) both provide essential requirements for…
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National Electrical Code (NEC) Requirements for Panelboards
NEC Requirements for Electric Main Panelboards and Working Space Depth and Mounting Height Panelboards shall be installed in accordance with the listing of the panelboard. The National Electrical Code (NEC)…
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