Video: What is Square D's bus bar phasing standard?
What is Square D's bus bar phasing standard?
Product features and application
We standardize on the convention established by the NEC which is A-B-C from left to right on vertical bus and from top to bottom on horizontal bus as viewed from the front. The I-line construction is stacked from front to back as ABC and is mounted vertically. There is an option for CBA construction but that is ordered as a special.