Transformer & voltage drop
Transformer Turns Ratio
Vₚ / Vₛ = Nₚ / Nₛ
Voltage transformation proportional to winding turns ratio.
Transformer Current Ratio
Iₚ / Iₛ = Nₛ / Nₚ
Current transformation inversely proportional to turns ratio.
Voltage Drop
Vᵈ = 2 × I × R × L
Voltage drop along a cable run at given current and resistance.