AISWEI inverter cannot be used with thin film modules which require a functional earth on either the positive or the negative DC conductor, in these cases we suggest using an isolated (transformer based) inverter. Our non-isolated (transformerless) inverters are normally designed for silicon solar modules. However, there are thin film solar panels that do not require a functional earth, and in these cases AISWEI inverter will operate correctly. Before designing your plant, please consult with module supplier and our service for technical support.