Well they rocked up at 6.30am this morning and were gone by 12.30pm... 20 off 250W solar panels on the roof with a  5KW inverter all now installed.
Apparently, im now to wait for Energex to come round ( 2 - 3 weeks) so the system can be switched on... Electrician showed me how to do this in case I need to switch it on at some point AFTER Energex have been.....
Pool pump is running... no system is not switched on... no it is not currently generating 3.5KW of power... no my meter is not going backwards right now...