2330 level 3 much same as level 2 but more intense deeper subject knowledge required.
Lots about motors, inspection and testing, fault finding and diagnostics.
You'll have one gola exam on H&S and electrical princibles and therory lots about motors in that one.
2 written exams one on inspection and testing, one on fault finding about 40-45 question on each exam paper they say 16 questions but normally 3 parts to questions.
Then you will have 2 assignments again I&T and fault finding. In these papers you will need to fill out method statements, risk assessments, describe inspection and test procedures, expected results, tool selection etc...
Then finally, practical exams that follow up your 2 assignments. I&T and fault finding.
These will include filling in EIC and schedules of inspection and schedules of results, inspecting for non compliance of BS7671/GN3 and fault finding on circuits.
These 2 assignments take about 10 hours and 6 hours, the two written exams are about 2 hours, gola an hour I think (40 questions) the written exams do touch a little on BS7671:2008. Your allowed your regs book and OSG in written exams and assignments but not for gola.
Hope this helps think, I've covered most of it.