We are looking at a older GE Panelboard 480volt 3phase 4wire system. Type CCB. The Nameplate states the following. "Short Circuit Current Rating 35,000 RMS Symmetrical Amperes 480volt Max." We are going to install a 35,000 AIC rated breaker in the panelboard. The building Engineer says it takes a 100,000 rated circuit breakers. Engineer says 35,000 is The RMS value not the AIC rating. The question is, "What is the Difference between RMS and AIC."
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[ November 22, 2004, 07:45 PM: Message edited by: charlie b ]
{Moderator's Note: Edited to remove personal contact information. If you wish to contact this person directly, then start by sending a Private Message.}
[ November 22, 2004, 07:45 PM: Message edited by: charlie b ]