copied from 2002 nec:
110.22 Identification of Disconnecting Means.
Where circuit breakers or fuses are applied in compliance with the series combination ratings marked on the equipment by the manufacturer, the equipment enclosure(s) shall be legibly marked in the field to indicate the equipment has been applied with a series combination rating. The marking shall be readily visible and state the following:
CAUTION â€” SERIES COMBINATION SYSTEM
RATED ____ AMPERES. IDENTIFIED
REPLACEMENT COMPONENTS REQUIRED.
240.86 Series Ratings.
Where a circuit breaker is used on a circuit having an available fault current higher than its marked interrupting rating by being connected on the load side of an acceptable overcurrent protective device having the higher rating, 240.86(A) and (B) shall apply.
(A) Marking. The additional series combination interrupting rating shall be marked on the end use equipment, such as switchboards and panelboards.
then i copied this from bussmann:
As required in Section 110-22, the load-side panelboard/switchboard label shall be field marked with the short-circuit rating of the series combination, type circuit breaker for replacement, part number for the series rated line-side, feeder fuses and location/name of this fuse switch/panelboard/switchboard. The panel/switch with the line-side fuses shall be field marked with short-circuit rating of the series combination, part number for fuse replacement and the location/name of load-side, series rated panelboard/switchboard.
ok, but thats a lot of marking, so does everybody do this for every lighting panelboard?
or do you throw away the red sticker with the 110.22 blurb?
or do you mark the line-side series rating on the red sticker at the load and line panel locations?
or am i just really lost?
the lighting panel comes with specs attached that says the panel itself is rated for 65,000a at 240v max, so the panel is marked already, and now i am supposed to identify the max short circuit rating for the breakers in that panel? is that right?