Electrical equipment foot bolted or welded fixed national mandatory standards?

All electrical equipment feet should be bolted, such as distribution cabinets, if you switch to welded, once you need to move, replace the cabinet, it will be very troublesome, the motor base are bolted, and so on.

The state does not have mandatory regulations, because the use of bolting is common practice.

General national mandatory provisions, regulations are mostly related to personal and equipment safety, other than mandatory provisions.