PVstudent - Solar Education Resource
RSS Follow Become a Fan

Delivered by FeedBurner


Recent Posts

Advancement and Development of Electricity and Technology
Building Integrated PV
Bypass diodes
Determining low temperature that caused the inverter to go over voltage
Another NABCEP PVIP Certificate in the mail!

Most Popular Posts

Feeder PV Connections 705.12(D)(2)(1)(b)
Crimping MC4 Connectors without the tool
Converting kWh to pounds of CO2
NEC 310.15(A)(2) Exception, 10% or 10 feet or less for sizing conductors
PV Temperature coeficcients in V/C, mV/C and %/C with conversion examples

Categories

Advanced PV Course
NABCEP PV Installation Professional Exam Prep Course
NABCEP PV Technical Sales Exam Study Group (which will evolve into a full course)
PV Boot Camp and NABCEP Entry Level Exam Prep Course
powered by

HeatSpring PV Course Blog

705.32 Ground Fault Protection


Q:

Hello Sean,
About Question 33, if the building has less than 1000amp service, can we do the load side connection on subpanel?
Thanks!

A:

The answer is no, because the subpanel is on the supply side of the of the 1000A ground fault breaker.

In the NEC it says:
705.32 Ground Fault Protection: Where ground fault protection is used, the output of an interactive system shall be connected to the supply side of the ground fault protection.
One of the reasons is that if there were a ground fault on the supply side of the main breaker, the fault current could go to the inverter rather than tripping the ground fault breaker.

Thanks,
Sean White


0 Comments to 705.32 Ground Fault Protection:

Comments RSS

Add a Comment

Your Name:
Email Address: (Required)
Website:
Comment:
Make your text bigger, bold, italic and more with HTML tags. We'll show you how.
Post Comment
Website Builder provided by  Vistaprint