An ‘Earth fault’ (also known as a ground fault, isolation fault or leakage current) means the current from the solar panels has taken an incorrect path due to a system defect such as poor wiring insulation, causing inverter shutdown. This often occurs in the presence of moisture. (e.g. rain or condensation)
Earth faults can come and go, but should be investigated immediately. Just because the inverter switches back on and solar production goes back to normal, this does not mean the problem is solved.
An Earth fault can present an electrical hazard for anyone touching the array or surrounding structures. DO NOT climb on your roof or touch your solar panels at any time.
In the event of an Earth fault, Solar Analytics will notify you via email and the dashboard and advise you of the recommended course of action to resolve the fault. This notification provides compliance with the new AS5033, clause 3.4.3 requirement for Earth Fault alarms effective from 11 July, 2015.