Panasonic KX-TDA100 Installation Manual page 33

1.4 Specifications
Equipment Type Load Figure
Total 96
The total load figure is 96. As this is between 64 and 128, you should install the PSU-M. However, if you
expect expansion in the future, it may be better to install the PSU-L. There is no harm in installing a PSU
that is larger than is required for the current configuration.
Installation Manual 33