- Location
- New Jersey
- Occupation
- Journeyman Electrician
Just took a code update class and they mentioned that the ampacity for several conductors had been changed in the 2011 NEC. The one major change is that now in the 60? C column #14 and #12 conductors are lowered by 5 amps to 15 amps and 20 amps respectively. This can have an impact when using NM cable to feed AC units and motors.
It seems rather odd to me that the substantiation for this change was to move the table more inline with the Canadian Electrical Code where the tables actually originate from. I find this to be rather bogus. Were the values in the old table really a problem from a safety standpoint?
It seems rather odd to me that the substantiation for this change was to move the table more inline with the Canadian Electrical Code where the tables actually originate from. I find this to be rather bogus. Were the values in the old table really a problem from a safety standpoint?