Seismic Compliance of Electrical Panels

[Pjstol]

So I have 3 vendors offering panels that are compliant with "Seismic Zone 4 (0.5g)". I'm not familiar with this rating provided or used by electricians. I would expect that rating to be in compliance/meets ASCE 7 Cs or Sds=some-high-value
Any previous experience with something alike here?

Thanks!

 

[BUGGAR]

These are NEMA ratings (National Equipment Manufacturers Association). These are the seismic codes electrical people use. I don't know if the electrical seismic is similar to structural seismic. Electrical is just different, for some reason.

 

[wannabeSE]

ASCE 7 requires Special Seismic Certification for electrical panels under certain conditions. I don’t have the code in front of me. I think it is for equipment with Ip=1.5 and seismic design category C and higher. They are typically verified for a max sds and z/h. Typically, shake table testing is used to certify the equipment.

 

[JGard1985]

Certification typically performed by either IEEE certification or AC156 Seismic Certification by Shake-table Testing of Nonstructural Components


Jeff
Pipe Stress Analysis
Finite Element Analysis

http://www.xceed-eng.com

 

[JLNJ]

There are a lot of vendors out there still stuck in the old UBC "zone" nomenclature for seismic.

 

[Bagman2524]

IEEE-344 & 323 are the specs I'm most familiar with for seismic qualification of electrical components. I've only seen qualification by shake table testing. Wyle Labs, Falwell and Hendricks, Trentec are some of the firms I'm familiar with that do this sort of thing. It's been a while, so I'm not sure if they're still around.

All I know is P/A and Mc/I

 

[wannabeSE]

OSHPD (California hospital)has a preapproval program. If you’re interested, you can see the preaproved equipment reports here

https://oshpd.ca.gov/ml/v1/resource...-Finance/PreApproval/OSP-List-by-Category.pdf