Inputs

Load current A Enter a numeric project value in A at or above 0.01. One-way cable length m Enter a numeric project value in m at or above 0.1. Cable resistance per metre ohm/m Enter a numeric project value in ohm/m at or above 0.0001. Current-carrying conductor count Enter a numeric project value between 1 and 4. Feed topology Choose the option that best matches the project condition. Maximum planning drop % Enter a numeric project value in % between 0.1 and 25.

Voltage drop -- V

Estimated end voltage -- V

Voltage drop percentage -- %

Within planning limit --

Feed topology used --

Planning recommendation --

Calculation details

Voltage drop: -- V
Estimated end voltage: -- V
Voltage drop percentage: -- %
Within planning limit: --
Feed topology used: --
Planning recommendation: --

Important notes

Confirm cable resistance, loop convention, connectors, feed arrangement, temperature, and product limits before selecting equipment.
This calculator provides planning support only and is not an installation approval or certification.

Formulas

\(\displaystyle V_{\mathrm{drop}} = I \times L_{\mathrm{one-way}} \times R_{\mathrm{per\,m}} \times N \times F_{\mathrm{feed}}\)
\(\displaystyle V_{\mathrm{end}} = 48 - V_{\mathrm{drop}}\)
Feed topology is a planning factor only: single end uses 1.0; both ends and centre feed use 0.5.

Estimate voltage drop and end voltage for a 48 V LED strip circuit using explicit cable resistance and feed topology.

48 V LED Strip Voltage Drop Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.

Inputs

Results

Formulas