RTL 3390 Inspection and Testing 1-day refresher

This practical-based testing workshop is ideal if you are looking to prepare for:

  • a 2391 inspection and testing course
  • an AM2 assessment
  • a 2919 Electric Vehicle Charging course
  • a competent person scheme visit

Whatever your reason for attending, you will feel more confident and better informed after completing our workshop.


1 day
Cost ( EX. VAT)
enquire now enquire now
Course Date Exam Date Venue Availability Booking
RTL 3390 Testing Refresh - Thu 30th May 2024 May 30, 2024 Stoke on Trent PLACES AVAILABLE Book Now
RTL 3390 Testing Refresh - Mon 22nd July 2024 Jul 22, 2024 Stoke on Trent PLACES AVAILABLE Book Now
RTL 3390 Testing Refresh - Mon 23rd Sept 2024 Sep 23, 2024 Stoke on Trent PLACES AVAILABLE Book Now
RTL 3390 Testing Refresh - Mon 18th Nov 2024 Nov 18, 2024 Stoke on Trent PLACES AVAILABLE Book Now

Course Description

This popular 1-day course is a hands-on testing workshop and is ideal if you need to refresh your skills at a low cost. You will quickly improve your knowledge and understanding of the initial verification process in a small group.

Our tutor will demonstrate testing in the morning session, and then you will test an installation in the afternoon session, covering a selection of 1-phase and 3-phase circuits.


About this course…

Our testing suite consists of various testing rigs, and you will be able to test a selection of electrical circuits following a tutor demonstration.

You will be provided with a Megger MFT 1700 series tester for use during your training. If you prefer, you are welcome to bring your test equipment, provided you are familiar with its operation and have a current calibration certificate.

The training will be structured as follows:

Morning session

  • A brief overview of an Electrical Installation Certificate
  • A tutor demonstration of the following tests:
    • Safe isolation
    • Ring Final Circuit continuity testing
    • 2-way lighting circuit continuity testing
    • 3-phase contactor circuit continuity testing
    • 1-phase and 3-phase insulation resistance testing
    • Ze
    • Zs@DB
    • PEFC and PSCC
    • Circuit Zs (calculation & measurement)
    • RCD testing

Afternoon session

You will test an electrical installation as above, recording your findings on an Electrical Installation Certificate.

What’s included?

  • Rebus 3390 Certificate of Training on completion
  • Free IET Guidance Notes 3 book hire
  • Refreshments

Course entry requirements?

You should have prior knowledge and experience of inspection and testing.

What’s next?

After completing this course you may wish to consider:


You will not be required to complete any assessment for this workshop.


Keith Martin Electrical Tutor and Assessor

Keith is a highly experienced electrician with over 25 years of experience with the local electricity board.

More recently, Keith has worked as a self-employed electrician and electrical trainer.

A fully qualified tutor and assessor, Keith now delivers a number of our courses, including 18th Edition and Domestic Electrical Installer courses.

Simon Hodgkiss Electrical Tutor and Assessor

Simon trained as an electrician with NORWEB and has accumulated a wide range of experience working predominantly in the industrial sector.

Simon has worked as an engineer in several production environments learning skills in both electrical and mechanical disciplines.

Simon delivers a range of our courses such as 18th Edition, Electrical Duty Holder, Authorised Person and Electrical Maintenance.