Available fault current ratings 3

[deetz]

We have a new machine that came in. It has a 5ka rating. My available fault current is higher than that. I assume I need to install a disconnect and fuses to get it lower than the 5000. Anyone know what style or type of fuse I can use?

 

[FacEngrPE]

I probably should have figured out how to add a "specimen" watermark on the image before posting.

 

[wroggent]

An isolation transformer will limit fault current.

Provided an AHJ accepts that as an "approved method", and then you have to live with the losses of that transformer forever.

Why do you suggest an AHJ would need to approve this in regards to the acceptability of installing the panel at this location? It is simply lowering the "available fault current" as mentioned in 409.22.