A recent study by a reputable electrical contracting business that specialises in solar service and repairs found that of the 5811 service visits undertaken by their business in the last 12 months, 671 failed DC isolators were replaced. This is a greater than 11% failure rate per annum, concerningly these failures showed evidence of DC isolator fires or were at the early stages of becoming a fire hazard. Source: Masters Electricians Association (MEA)
As governments around the world are actively updating their safety standards, regulations are being introduced to ensure solar energy is safe and reliable so that fire risks can be reduced.
Australia lags behind international solar safety standards resulting in conventional DC systems still being widely used.