1. Solar bollard garden lights or courtyard lamps shall be arranged properly according to the size of the road. The lamps shall be arranged symmetrically or zigzag on both sides of the road with a distance of 15-25m; the lamps shall be arranged on one side of the road with a distance of less than 6m with a distance of 15-18m.

2. The illumination of the solar bollard garden lights and lawn solar garden lights shall be controlled between 15-40lx, and the distance between the lamp and the roadside shall be kept within 0.3-0.5m.

3. Street lamp and courtyard lamp shall be designed for lightning protection and galvanized flat steel not less than 25mmx4mm shall be used as the grounding electrode, and the grounding resistance shall be within 10 Ω.

4. The underwater lamp adopts 12V voltage and isolation transformer.

3. Underground lamp, fully buried underground, with the best power between 3W and 12W.