Oldfilament
New User
- Location
- California
- Occupation
- Electrician
I'm looking for information on the withstand (Bracing) ratings for a 600 amp & a 400 amp ITE single phase, fused, residential service main with meter stacks. The service was installed in 1966. The AIC from the new utility transformer is 39k. The service is still in good condition but all labels have been painted over or are missing. All installed 125 amp feeder breakers are rated 10k. I understand that newer Siemens breakers with a higher AIC (42K) can be retrofitted but the issue of the bus bracing is in question. If anyone has any info regarding bracing ratings of these boards it would be very helpful indeed.