Answer by  
                                                                                          Anita27 (656)
                                                            
                          
                          
                                                           Grounded electrical wires are a good idea in all electical work, but they are really only necessary when there is a risk of electrocution.  Bathroom and kitchen outlets absolutely need to be grounded because there is a higher chance of water being in those areas.  Light fixtures are less likely to get wet.