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John Livingston's

The Nuclear Electrical Engineer

An educational resource for electrical engineers in the nuclear power industry

Here you can find design tips on technical skills like cable and breaker sizing, short-circuit evaluations and more, PLUS deep-dive analysis of nuclear-specific topics like design basis, Tech Specs, UFSARs, and safety-related SSCs — built from primary source documents.

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Tag: time-current curves

Coordination curves

Sometimes you’ll need to use more exact methods for sizing your breakers than the rules given by the NEC . . . .

Sizing Breakers