When installing a spotlight, the transformer is generally mounted inside the hole and there are no unsafe problems. Because of the large space in the ceiling, the heat dissipation is very good. First, the common problem with installing spotlights is that some workers did not put the power cords in place during the early construction period. After the ceilings were created, the lighted holes could not be found. Therefore, attention should be paid to the layout of the lines. . Requires an electrician to work well with carpentry. Second, another problem is that some light holes are inaccurate when excavated, resulting in inconsistencies in size or spacing around the left and right, looking awkward. Third, the lamp hole due to the height of the ceiling to form a depth, this depth should be able to put into the spotlight. If it is not enough, the lamp cannot be installed. Therefore, what kind of spotlights should be considered when the ceiling is in use. It is roughly this. I hope my answer will help you. Aisle ceiling living room ceiling layout space Pu Adhesive For Furniture And Building Materials Polyurethane Adhesive,Polyurethane Glue,Aluminium Honeycomb Neutral Silicone Sealant,Professional Silicone Adhesive Co., Ltd. , http://www.chsiliconesealant.com