The Advanced Competence Assessment (ACA) was introduced in 1999 as a path for graded Electricians who have gained the required level of site experience and wish to upgrade to Approved Electrician. The ACA is a mandatory requirement for upgrading to Approved Electrician. The ACA is undertaken at...
sjib.org.uk
The ACA consists of the following five sections:
A –Assessment of Safe Working Practices (Risk Assessments)
B – Safe Isolation of Supplies
C – Inspection and Testing
C1 – Initial Verification
C2 – Periodic Inspection and Testing
D – Supervision (Operatives and Installation Work)
E – Underpinning Knowledge Assessment
I don't know this system, but it seems like like apart of the NVQ and AM2
I would say Go for the testing qualifications.
So the 2391-51 is the 2395 periodic inspection
And the 2391-50 is the 2395 initial verification
What makes 2391-52 the full thing , ie both section's.
How long ago did you do your ACA , if wasn't long ago I would go for the 2391-52 while it's all fresh in your mind