LED T8 tubes are now used widely for replacing linear fluorescent lamps in existing fixtures for commercial and industrial and educational lighting applications due to their energy efficiency, longer lifetime and lower maintenance cost. What most people may not understand is that not all LED T8’s are wired the same. Different LED T8 wiring design affects greatly the installation time and labor costs. In some cases projects can be delayed when the lamp holder configuration was not taken into account. In most projects the targeted fixtures have shunted lamp holders (estimated 60% fixtures in use have shunted lampholders). Using an LED T8 that can only work with a non-shunted lamp holder will increase the project cost with additional time (per fixture) on lamp holder replacement. SEPICN TYPE A & B LED T8 lamps are compatible with both non-shunted and shunted lamp holders. While other major LED T8 lamp manufacturers now provide extra parts (wirings and non-shunted lamp holders) needed to properly complete the project, this only adds to the cost of installation.