CSA C22.3

CSA C22.3 is the Canadian standard for overhead and underground electrical distribution systems.

CSA C22.3 is the Canadian Standards Association series governing overhead systems (No. 1) and underground systems (No. 7) for electrical utilities. It sets the load cases, clearances and construction requirements that distribution design in Canada must meet — the Canadian counterpart to the US NESC. Distribution design and pole loading for Canadian utilities is verified against the applicable CSA C22.3 requirements.