Our electrical safety test process [Step-by-step guide] in Luton and harpenden

At Ohms Electrical, we take great care when it comes to electrical inspections and testing. Unfortunately, not every electrician will do their due diligence when it comes to completing an EICR (Electrical Inspection Condition Report), but we feel that not doing so would jeopardise all members of the household. Read this blog post to find out exactly how we undergo our electrical inspection testing procedure…

Our process when it comes to electrical testing

  1. We visit your property and check that the supplier’s earth is adequate (ze reading), which has to be below a certain reading to enable a fault to trip the board at the speed of light (0.4 seconds). 
  2. Then we check for bonding to exposed metalwork that has a path to the ground (earth) in the event of electrocution, when touching metal parts (ie: a radiator, sink or a tap) and if not bonded, then the voltage will run through you. If bonded, then the voltage will be reduced to a tolerable level.
  3. The next step is to check all distribution circuits (to a subboard like a summer house or garage) and final circuits ( lights, cooker, sockets etc). We undertake an earth continuity test on each circuit, then an insulation resistance (IR) test (the condition of the insulation of the wire – blue and brown wire).
  4. Live testing: Zs test (earth fault loop impedance test) Making sure there’s an earth fault path. When there’s a fault to find the earth to ground
  5. Polarity test on all of the circuits (include photo)
  6. RCD test: Make sure the RCDs are functioning correctly
  7. Finally, we check whether the installation was done competently, making sure there are no faults from previous installations  

What happens next?

At the end of the report, you will get either a Successful or unsuccessful report. The codes relate to each checklist items just like an MOT we have a list of items we check and the below codes added or a N/A or a ✅

C1: danger present we will fix this straight away as the result is life-threatening

C2: is potential danger…an action is required to make it danger present, these can be left for us to come back to repair.

One or more of the above means the test is unsatisfactory  

C3: is a recommendation and ideally to be sorted before the next inspection

FI: Further investigation required: Unsatisfactory – something like we see something and we’re not too sure about it. (If we get a resistance reading that comes in low or a fan that hasn’t got an isolator on it) This could be in between a C2 and a C3. 

%d bloggers like this: