readings

Recent contents Top users
  1. A

    UK Oven element insulation resistance readings

    I have a dual grill element from an electric oven, one circuit of which trips the power when switched on. I have removed this to replace it and have since tested it with an insulation resistance tester. For the good circuit, I get a reading of 500MegOhms, for the supposed "bad" one, 20MegOhms...
  2. A

    Marginally high CPC end to end readings

    Sure this has come up before but yesterday testing after adding a spur and end to end readings on CPC come out about 0.2ohm over expected reading (was expecting about 1ohm from LL & NN (0.65) Checked all sockets I could see (some were very old so suspect the sockets themselves might be a...
  3. J

    Insulation resistance test readings.

    Had an interesting one today, ring circuit blown the Mcb in a kitchen apparently a few times over last day or so. It has blown once when nothing was really in use in kitchen so kind of ruling out overload. When turned up and turned it back on it held for maybe 5 minutes before blowing again…...
    • Jm1980
    • Thread
    • insulation insulation resistance insulation resistance test readings resistance test
    • Replies: 2
    • Forum: UK Electrical Forum
  4. C

    UK High PSCC and strange readings - help much appreciated

    Hey hows it going, So was doing two different EICR the other week. Two different locations, same issue and I’m not sure what the best course of action is. Both constructed in 2016, 100% new. Hager metal dbs. TN-C-S (PME) So for example on one: Original test sheet Zdb - 0.21ohms, 1.18 kA (No...
    • CalB4676
    • Thread
    • appreciated help inspection and testing pfc pscc readings strange
    • Replies: 21
    • Forum: UK Electrical Forum
  5. P

    What causes low IR readings?

    I’m currently at the second fix stage of a rewire and before all the flooring goes down I’ve decided to do r1+r2 readings to make sure everything is continuous and polarity is correct. I also decided to do insulation resistance tests and have got lower than expected readings. On the downstairs...
  6. M

    Voltage spike causing strange readings?

    Hi guys, Our client called us out to assess a fault in one of their buildings today, it turns out that certain circuits (those with fixed electronic equipment within them) are now acting as if there is no load and the neutral wires back at the board are now showing 230V to earth. Could a...
  7. L

    Bollard light mystery IR readings?

    Hi everyone. Hopefully someone can help with a little mystery i had today. The issue is fixed but I want to understand what was going on to help in the future. Fault Finding a tripping fault on some bollard lights. Low IR L - CPC/N - CPC. It was an easy fix, whoever had done it originally had...
  8. E

    Different kw readings

    Hello, I’m testing some electric meters. As the circuits have no load on them to prove each ct I’ve plugged a hair dryer to simulate a load and put the ct around the line of the hair dryer to check measurements are the same as a calibrated meter. The Ct’s from each phase read the same Amps...
  9. W

    Megger X1 PEFC readings

    Megger X1 - anyone getting a vastly higher PEFC reading (2ka more) on 2 wire no trip, than PEFC on 3 wire
  10. A

    Megger MIT420/2 unstable continuity readings?

    Chaps - having problems with a new Megger MIT420/2 insulation/continuity tester 'oscillating' and failing to give stable resistance readings in continuity mode with some motors (although it did it once on a Cal Card!). I don't think it's a duff unit, but anyone else have one and experienced...
  11. A

    Help with Readings on circuit

    Hi Can anyone clear up or explain in a bit more detail what could potentially be causing the results I have. I have just tested a 32a ring main wired in 2.5mm twin on B32 Rcbo. There are 8 sockets on the ring and all are in plastic dado trunking in 2 offices. The readings I have are: L-L= 0.76...
  12. E

    Ze readings >2000Mohms

    Fluke MultiFunction Tester 1662 TNS Earthing system. Switchboard - 415v - 3 Phase + Neutral + Earth. MCB 1000A 3 individual Earths (185mm) connected to the Switchboards Earth Busbar via a main earth bar which is then connected to the sites Earthing Grid that is bonded with exothermic...
  13. D

    Readings from a multimeter

    Hi I am trying to do the 180 degree test on the aramature of a 240 volt electric motor, out of a blender. Youtube would sujest that the resistance readings should be about the same if there is no fault. I am getting the following- 1.4 2.6 4.9 5.4 7.0 8.0 9.0 10.5 11.8 12.4 12.1 12.7 Likewise...
  14. G

    How accurate are solar panel output readings?

    Hello Is it possible for solar panel monitoring to over state the actual power generated by the system? My friend’s 6.4kW system has generated 1280 kWh in the 82 days since its commissioning on 1/12/2022. Extrapolation of this output predicts an annual production of around 5,700 kWh which...
  15. E

    cooker element readings

    I have measured the following readings to earth on a twin oven---- Element 1... 0.149, Element 2... 0.9, Element 3... 0.88 , Element 4 0.08. These all with the merger set at 500v. they all seem low to me especially Element 4, needless to say the RCD trips randomly.
  16. L

    R1 + R2 expected readings

    Has anyone got a table of expected R1 + R2 readings that give a guide to what readings we should be getting when testing
  17. T

    Low Insulation Resistance readings N-E

    Looking for some guidance here. I'm currently shadowing a guy and we're testing a new extension on a school. 3 phase TNCS supply from the original busbar. Feeds a section board and from the section board it feeds 4 3 phase DB's. The DBs have one feed in and then split to a separate power and...
  18. C

    18th edition max zs readings

    Hi can anyone point me in the right direction I’m looking for a copy of the max zs tables for fuses/mcbs etc from 18th Ed. I’m awaiting my regs book to arrive and need to swat up, has anyone got a link I can print out thanks
  19. J

    UK Zs readings unusually high on new installation, what is the best option to lower them?

    I've just finished an installation on a large outhouse around 50 meters from the main property, but I'm having issues with unusually high Zs readings within the new installation.. The nature of the installation is a TNCS system with 25mm tails & 16mm cpc Henley blocked from the main supply to a...
  20. alexander jackson

    UK Zs Readings seem to be a bit low.

    Gents. I did some earth loop tests on Rolec power pedestals (2x 16 amp outlets) that are harbour side, looped in and out from one another. Three months ago I got Zs readings from about 1.2 ohms to 0.50 ohms. This time round the readings are all less than 0.01 ohm. Megger MFT meter. The RCD in...
Best EV Chargers
Best EV Chargers by Electrical2Go! The official electric vehicle charger supplier.

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Advert

YOUR Unread Posts

Daily, weekly or monthly email

Receive a daily, weekly, or monthly email containing a digest of new and recently updated threads.

Advert

TrueNAS JBOD Storage Server

UK Tiling Forum | Tilers Forums
UK Tiling Forum by Tilers Forums UK
Plumbers Forums | Plumbing Advice | Gas Forum
Electrician Tips from Professional Electricians
JBOD Forums: a forum for JBOD storage server advice
JBOD Suppliers: JBOD Storage Server Supplies
Back
Top