How do I avoid a linewrap in powershell output? Appearently powershell thinks the terminal is of limited size.

I call it like that:

ssh user@winsrv powershell -NonInteractive -NoLogo -File some.ps1

This causes the lines to be wrapped/truncated at 80 chars. Only powershell has this issue, the parent POSIX shell gets it right.

You can try setting the bufferwidth using [console]::bufferwidth. Create a profile and set the value to whatever you want. The profile path is generally 

C:\Users\<user>Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1

If it doesn't exist create it and add the [console]::bufferwidth = <whatever> command.