Product Guide Cables and Wiring Behind the recommendations Related articles Behind the recommendations Related articles Cables and Wiring Products are free of heavy metals and halogens—containing no chlorinated, brominated, or fluorinated substances. More about Cables and Wiring Search for Green Wiring Gets a LifeGuard Wire and Cable: Untangling Complex Environmental Issues Modular EZ-Wiring Eliminates Common Hazards The Death and Rebirth of DC Power Direct current is replacing AC in microgrids and other setups that maximize the efficiency of lighting, HVAC, and onsite renewables. DC Power Supply Integrates AC and Renewables Nextek PhD provides AC-to-DC power at the building scale, integrates renewable energy, and can even save on first costs.