TheElectrician
Senior Member
- Location
- New York, NY, USA
Hey Guys,
In the attached 3 three line I have bonded N-G on the first disconnecting means on both the primary and the secondary of the T/F to earth and connected the transformers G to earth as well. I followed NEC 230.30(A)(1) Exception No. 2, but just a doubt if the "first disconnecting means" just denotes that it should be bonded either on the primary or on the secondary or should it be on the both disconnecting means. Is there any other code that stated this?
Thanks
In the attached 3 three line I have bonded N-G on the first disconnecting means on both the primary and the secondary of the T/F to earth and connected the transformers G to earth as well. I followed NEC 230.30(A)(1) Exception No. 2, but just a doubt if the "first disconnecting means" just denotes that it should be bonded either on the primary or on the secondary or should it be on the both disconnecting means. Is there any other code that stated this?
Thanks