Describe the bug

For PV-battery configurations with DC-connected batteries, with transformer losses specified, SAM calculates very large loss values.

A workaround is to assign the transformer loss input to the AC wiring loss category and set transformer loss inputs to zero.

https://sam.nrel.gov/forum/forum-general/3700

To Reproduce

Steps to reproduce the behavior:

1. Create a default PV-Battery / Single Owner case.
2. On the Losses page set both the transformer load and no load loss values to 0.2%.
3. On the Battery Cell and System page, choose the DC Connected option.
4. Run.

Expected behavior

Annual transformer loss percentage in results should be of similar magnitude as input percentages.

Operating System and Version

SAM 2021.12.02, tested in Windows