Bus-duct system

[m sleem]

I'm in a project where the bus duct system was designed to be terminated at the LV switch-gear, the fabrication details show the bus duct routing crossing above the whole unit substation includes switch-gear as well as the transformer and the RMU while maintains only 400mm clearance from BOD to the units, is there any code issue for that installation?

 

[m sleem]

The bus duct is plug-in type feeding some DPs through the switchgear.
I really appreciate your feedback.

 

[ron]

It is hard to understand the installed conditions. 15" of clearance from the plug-in units to the SWGR / transformer, is only an issue if you violate working clearances or the heat rise from the transformer changes the "ambient" temperature that the busway needs to operate.

Hard to visualize your application.

 

[m sleem]

Due to the site condition The bus duct crossing above the whole substation & maintains 400mm distance to the substation.

 

[ron]

Due to the site condition The bus duct crossing above the whole substation & maintains 400mm distance to the substation.

Sounds similar to the OP. What is the concern? Do you suspect the busplugs will not have adequate working clearance?

 

[m sleem]

Sounds similar to the OP. What is the concern? Do you suspect the busplugs will not have adequate working clearance?

110.26(E)(1)(A) applies here?

 

[augie47]

110.26(E)(1)(A) applies here?

It is my understanding that the restriction applies only to equipment foreign to the electrical installation.
Sounds like very poor design, but no a violation, IMO.