monitaverma
Member
Hello
I am working on Multi-family units (Total 4 units). Currently, there is 200 amp incoming service outside the building and each unit is fed by 30 amps. 30 amp panel is in the hallway. They have also (1)60 amp House panel.
New electrical scope includes new 400 amp service. New 70 amp panel to each unit. Existing 30 panel will serve like a sub-panel to new 70 amp panel.
Plan checker asked me to submit KAIC rating for new distribution board. So I submitted Utility drawing, which says "Maximum fault current is 22KAIC". She asked me about existing 30 amp panel KAIC rating. She also told me that, new panel KAIC rating is 22KAIC and existing panel KAIC will be less, as it was installed like 15 years ago. How you going to protect existing panel?
Pleas give me some suggestion on this, as i really want to get it done.
Thanks
I am working on Multi-family units (Total 4 units). Currently, there is 200 amp incoming service outside the building and each unit is fed by 30 amps. 30 amp panel is in the hallway. They have also (1)60 amp House panel.
New electrical scope includes new 400 amp service. New 70 amp panel to each unit. Existing 30 panel will serve like a sub-panel to new 70 amp panel.
Plan checker asked me to submit KAIC rating for new distribution board. So I submitted Utility drawing, which says "Maximum fault current is 22KAIC". She asked me about existing 30 amp panel KAIC rating. She also told me that, new panel KAIC rating is 22KAIC and existing panel KAIC will be less, as it was installed like 15 years ago. How you going to protect existing panel?
Pleas give me some suggestion on this, as i really want to get it done.
Thanks