March 3, 2026 - Arc Flash & Electrical Power Training

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Impedance Grounding and Arc Flash

A short circuit happens when energized conductors accidentally make contact with each other and/or to ground. When that connection forms, the load and its impedance is bypassed resulting usually resulting […]

When Horizontal Bus is NOT HCB

Question:I have a switchboard with horizontal bus. Should I use the HCB model? Short answer:Not necessarily. Wait! What? Horizontal might not be horizontal? NFPA 70E requires performing an arc flash […]

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Day: March 3, 2026

Impedance Grounding and Arc Flash

When Horizontal Bus is NOT HCB

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