Lesson 5 — Power, Lighting, and Controls

Goal: power the nursery reliably and safely (pumps, timers, greenhouse fans, heaters, lighting).

Power map (simple)

Main panel → subpanels (greenhouse / barn / pump house)
→ dedicated circuits (pump, fertigation, fans/heaters, lighting)
→ low-voltage controls (timers, solenoids, sensors)

Design principles

• Dedicated circuits for pumps and high-draw equipment.
• GFCI where water is present.
• Labeled “control wall” for timers/relays.
• Plan for future automation (even if you start manual).

Do this

1. List every device you expect in Year 1 and Year 5 (pumps, heaters, fans, lights).
2. Decide where subpanels go so cable runs stay short.
3. Build a simple electrical legend: breaker → device → location.