Final answer:
Outdoor lighting should be installed at a safe distance from pools and fountains, which is typically determined by local building codes. The safe distance, often suggested to be at least 10 feet, is to prevent electrocution hazards.
Step-by-step explanation:
The question of how far away from pools and fountains outdoor lighting must be is primarily concerned with safety regulations and electrocution prevention. While the provided reference material doesn't specify a precise distance expressly for outdoor lighting relative to water features, it highlights concerns with the effectiveness of light sources at varying distances. In the context of lighting near water, it is not just about the reach of the lighting effect but about ensuring safety by keeping electrical fixtures away from water to prevent electric shock hazards. Building codes and local ordinances typically dictate these distances and may vary. To ensure compliance and safety, it is recommended to check with local building codes or guidelines provided by the National Electric Code (NEC). As a general safety rule, lighting and electrical outlets should typically not be installed within 10 feet of pools or water sources, but again, please refer to your local regulations.