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What is the short circuit rating of my panelboard?

If fully rated the short circuit rating of a panel is listed on the rating nameplate of the panel.  This rating will be the withstand rating of the panel interior or the interrupting rating of the lowest rated overcurrent device in the panel. equal to short circuit interrupting rating of the If series rated, a sticker with field added interrupting rating should be visible on the panelboard without removing the dead front. The installer would have written the series rating on the sticker. If fully rated, the interrupting rating is equivalent to the lowest rating of any contained circuit breaker, whether main or branch. Typically located on the backside of the dead front cover, a sticker describes this process of determining the rating. UL and NEC do not require a label listing the specific interrupting rating for fully rated panelboards.
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