The Norwegian Railway Museum in Hamar needs to replace the existing exhibition lighting. It is exhibition lighting and possibly dimmers on cable racks that are to be replaced, as well as lighting in some passenger carriages. As stated in SSA-O Annex 3 (Project and Progress Plan), the contracting authority plans to start the replacement of one exhibition before Christmas 2017. The tenderer that is chosen in this competition must, therefore, reckon on starting relatively immediately after the contract has been signed.