It sounds to me like the 240 VAC (via the N1/N2 wires) is not making it to the generator or the devices that use that voltage to determine that utility power exists may have been damaged.
Do you have a good multimeter and the skill to use it?
I hope that there is a junction box where the cuts were made. By code, no splicing can legally be done inside a conduit run unless the splices are in an accessible junction box of the correct size.
All connections are in junction box . I have 240 at N1 and N2 in both the generator and the transfer switch. I do have multimeter and am average at best in using it