Inrush current

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Inrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform.

Excerpt from the Wikipedia article “Inrush current”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: The original uploader was Ignaciomella at English Wikipedia., Public domain, via Wikimedia Commons.