The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).