zmVault/timestamped/2026-02-12_09-49-56.md

id, aliases, title, tags, daily, dg-publish

id	aliases	title	tags	daily	dg-publish
2026-02-12T09:49:56-0500		2026-02-12 09:49:56	status/draft topic/construction/electrical	2026-02-12	true

2026-02-12 09:49:56

Interrupting Rating

• "short-circuit interrupting rating"

Applies to "Equipment intended to interrupt current".

nfpa-70_110_requirements#^9

Maximum current that the equipment can interrupt without damage. Measured in amperes, usually shown as kAIC.

Short-Circuit Current Rating (SCCR)

• "withstand rating"

nfpa-70_110_requirements#^10

Applies to assemblies: distribution equipment like switchboards, panelboards, switches, etc.

Maximum current that the equipment can withstand in a short-circuit event without damage. Measured in amperes, usually shown as kA.