High power Luminus LEDs are rated for high currents such as in the example below for a CBT-140-W where the maximum rated drive current is 28 A. This requires a large wire gage for correct operation. The proper size wire for a given current considers the voltage drop and the temperature rise constraints for the desired wire length. Various free calculators can be used for these calculations.
Luminus uses a 14 AWG wire harness in our development kits to accommodate the range of the possible currents that may be used. There are situations where the connectors/headers in the power supply boards are not big enough to insert a 14-gage wire and multiple parallel wires with a smaller gage need to be employed.
A simple gage calculator based on maximum current and insulation temperature ratings can be found here: http://wiresizecalculator.net/calculators/wiresize.htm
An equivalent gage calculator for parallel combined wires can be found here:
These links are being provided as a convenience and for informational purposes only; they do not constitute an endorsement or an approval by Luminus of any of the products, services or opinions of the corporation or organization or individual. Luminus bears no responsibility for the accuracy, legality or content of the external site or for that of subsequent links. Contact the external site for answers to questions regarding its content.
Please sign in to leave a comment.