Line Losses & Wire Sizing
Where do the joules go down a transmission line? Slide voltage, distance, current, and cable gauge to solve Ohm's law losses.
1. System Setup
2. Parameters
load power [W] 1000
nominal voltage [V] 48
one-way distance [m] 10
conductor size [AWG] 14
wire temperature [°C] 60
3. Target Sizing Solver
Automatically find the minimum conductor size required to keep the voltage drop below a target threshold.
%
Current —
Voltage Drop —
Power Lost —
Efficiency —
⚠️
Overcurrent / Thermal Hazard Warning!
Live Circuit Schematic
SELV
Efficiency vs Voltage
Voltage →
Efficiency (%) →
Power Loss vs Distance
Distance →
Loss (W) →
Annual Cost of Wire Waste
annual wasted cash: $0.00 / yr
Conductor Characteristics
conductor dia—
cross-section area—
resistance (loop)—
thermal delta (rise)—
Step 1: Calculate Copper Resistivity at Target Temperature
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Step 2: Calculate Loop Conductor Resistance
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Step 3: Calculate System Current
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Step 4: Calculate AC Voltage Drop and Power Loss
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5. Wire sizing comparison table
Compare your current configuration against standard adjacent wire thicknesses.
| Size | R (Loop) | V Drop | Watt Loss | Efficiency | NEC Limit |
|---|
Configuration parameters automatically synchronize with the URL.