When using mobile power generators for rescue work and on construction sites, the use of electrical energy must under no circumstance lead to potential hazards to human life or equipment. However, service readiness must be guaranteed as quickly as possible, for example for rescue work. This means no time-consuming calibration of safety measures such as GFCIs and earth spikes, which would necessitate the presence of an electrician. Given these requirements, based on IEC 60364-5-551, the safety measure “Protective isolation with insulation monitoring and shutdown” is the correct solution in practice.
