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Pull boxes penetrating walls

Question asked by ejlsanpedro on Feb 20, 2019
Latest reply on Feb 22, 2019 by chiefns830

Hi everyone!


We are doing a renovation project and one of our concerns is a pull box penetrating a wall.

According to one of the project managers, in Japan's standards, a pull box made of a 1.6mm-thick plate would be enough when you install them penetrating through the walls. Is this the same with the NEC or the NFPA? 


I attached the pictures of what's currently installed on-site.