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  • Home
  • Lighting Products
  • Lighting Applications
    • New Construction Can Light (Down Light + Can Housing)
    • RGB Lighting & Smart Controls
    • Decorative Pendants and Wall Sconces
    • Architectural Linear Fixtures
    • Cove, Indirect, Under Cabinet Lighting
    • Green Wall Lighting
      • Projects and Products
      • Green Wall Lighting Design Case Study
      • Green Wall Basics
    • Exterior Lightscaping
    • Black Light Lighting
    • Horticulture LED Lighting
    • Commercial Lighting
    • Residential LED Lighting
  • SST’s Project Gallery
  • About SST
    • Contact Us
  • Blog Post
  • Resources

Frequently Asked Questions

Home How far can an LED driver be from the light fixture so as not to significantly affect voltage drop?

How far can an LED driver be from the light fixture so as not to significantly affect voltage drop?

Wiring and distances between LED drivers and fixtures do not have set requirements, but circuits are generally designed so that the voltage drop due to wiring is no more than 5% of the total circuit voltage.  As stated in Ohm’s Law (V=I*R), current conducted by a wire is proportional to the voltage drop across the wire.  A wire’s gauge, length, and composition affect the resistance of the wire, and hence affect the voltage drop across the wire when a current is applied.  There are only two options to reduce the resistance of a length of wire, namely by increasing the wire’s gauge or decreasing the wire’s length.

Electrician-related questions

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