Power quality (PQ) Loose termination 2 Neutral to Earth Voltage (NTEV) 2 Open conductor 2 Commercial building 1 Distribution systems 1 Electrical appliances 1 K-nearest neighbor (K-NN) classifier tools 1 Location 1 Measurement points 1 Neural network (NN) 1 Neutral conductor 1 Neutral to earth voltage 1 Neutral to earth voltage (PQ) 1 Neutral to ground (NG) voltage 1 Office buildings 1 Power quality 1 S-transform (ST) 1 SAG-SOURCE LOCATION 1 Wavelet transform (DWT) 1