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ground Fault protection

truckie117 New Member Posts: 2	ground Fault protection May 16, 2016 11:16:03 GMT -8 Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by truckie117 on May 16, 2016 11:16:03 GMT -8 Hi I am building a system from your 400 watt 12 volt panels with 40 amp mppt controller. How do you size a ground fault breaker for this system?