Correct dimensioning of mounting plates near an edge in concrete is of utmost importance to prevent breakage. This study, which is primarily experimental, investigates the capacity of a certain type of embedded mounting plate when placed adjacent to an underlying edge. The purpose is to gain an understanding of how these mounting plates should be dimensioned against edge breakage and to investigate how a transverse bar affects the shear capacity near an edge. The study presents the results from practical tests and compares them with calculations made according to the Eurocode. The results show that the actual fastening has a higher strength than what is described in the calculation models from the standards. Full-scale testing and dimensioning guidelines based on testing led to comparable results in the experiment. The method used in the experiment yielded promising results and shows that calculations according to the Eurocode do not correspond to reality. Instead, the capacity turns out to be significantly higher than what is shown after calculations according to interpretations of standards.