Hobbyist.
I have done N.Z.C.E. in power electronics, studied some advanced electronics, and like reading service manuals, Silicon Chip magazine, electronics schematics books.
I do the odd 110 and 24 volts battery charger repairs for the powercompany i work for as well as some SCADA repairs and alarm systems in substations.
I like using the older technology with discreet components like TTL, CMOS and normal transistors 2N3055, BC 547 etc, instead of using PICS or other type of processors.
I work mainly with 110, 230 / 400 Volts equipment as an electrician for the powerboard, normal wiring jobs, whatever has to be done, instrument calibration, pilot control systems for hotwater and streetlights, ripple injection plant, faultfinding in distribution cables, connecting up generators ( 100 to 1000 kVA )when there is an underground cable fault.
Work in 11, 22, 33 and 110 kV substations for all types of maintenance on OCB's, ABS's, electromechanical protection, testing and commisioning of substation transformers, and pressure testing of HV cables after a fault has been repaired.
Have over 20 years experience in kWh metering systems for revenue metering from the humble 1 phase one rate meter to the newer TOU metering systems with CT's currently in use at the larger customers. Done installation, calibrating, refurbishing old meters, timeclocks etc.