ECN Forum Forums Code Related Discussion Canadian Electrical Code Topics Need help with voltage drop CEC test question

If the load is unknown, the demand is 80% (8-102(2)).

The max ED on a circuit or feeder is 3% (8-102(1)(c)).

If you exceed the table values, you made a mistake. The questions aren't that dirty.

Check your calculations here: http://www.codemath.com/cgi-bin/Run.pl?script=CecAwgRw2012 . They aren't guaranteed correct but should point you in the right direction.