| 
                                    gptkb:Manitoba_power_grid
                                 | 
                                
                                    
                                        500 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Manitoba_power_grid
                                 | 
                                
                                    
                                        230 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Hydro-Québec_hydroelectric_system
                                 | 
                                
                                    
                                        735 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:New_South_Wales_grid
                                 | 
                                
                                    
                                        330 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:National_Grid_of_India
                                 | 
                                
                                    
                                        400 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:UK_electricity_system
                                 | 
                                
                                    
                                        275 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Michigan_electricity_grid
                                 | 
                                
                                    
                                        345 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Hong_Kong_power_grid
                                 | 
                                
                                    
                                        400 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:BC_Hydro_grid
                                 | 
                                
                                    
                                        500 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Iranian_power_grid
                                 | 
                                
                                    
                                        230 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:UK_electricity_system
                                 | 
                                
                                    
                                        400 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Ontario_electricity_grid
                                 | 
                                
                                    
                                        500 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Northern_Ireland_electricity_grid
                                 | 
                                
                                    
                                        275 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Michigan_electricity_grid
                                 | 
                                
                                    
                                        138 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Hong_Kong_power_grid
                                 | 
                                
                                    
                                        132 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:National_Grid_of_India
                                 | 
                                
                                    
                                        220 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:BC_Hydro_grid
                                 | 
                                
                                    
                                        230 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Ontario_electricity_grid
                                 | 
                                
                                    
                                        115 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Iranian_power_grid
                                 | 
                                
                                    
                                        400 kV
                                    
                                 | 
                            
                        
                            
                                | 
                                    gptkb:Northern_Ireland_electricity_grid
                                 | 
                                
                                    
                                        110 kV
                                    
                                 |