Guru
Joined: 11/02/2018
Location: AustraliaPosts: 3013
| Posted: 08:23am 02 Aug 2024 |
Re isolated SMPS modules, ask on the Electronics Forum. The inverter guys use ones available in this part of the world with a good reliability record.
As you are using phone pairs isolated from the old phone system, ground loops are unlikely to be an issue.
Edited 2024-08-02 18:24 by phil99