Designing Low-Voltage Underground Electrical Duct Banks

Designing Low-Voltage Underground Electrical Duct Banks

How to ensure the cables you’re using are properly sized and de-rated

Performing electrical cable heating calculations can be a cumbersome task, but they’re essential to accurately determining the allowable ampacity of an underground electrical duct bank installation. Improper heating calculations can lead to an undersized duct bank, which can be a costly mistake to fix — if it’s even possible. Electrical engineers designing electrical duct banks must understand the soil’s thermal properties and the effects it will have on the overall installation. In ord

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