Search results
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MEGGER Bm223 - how to use it?
I'd look for videos describing ohms law. The relationship between voltage, resistance and current underpins almost everything we do and getting a good grasp of this as early as possible will really help. This one is rather fun as he very practically demonstrates that resistance limits current...- timhoward
- Post #13
- Forum: Electrical Tools and Products
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Dodgy trade pictures for your amusement!
I was drilling through the other day and measured extremely carefully to avoid a gate post and a gas pipe. The pilot hole went fine and it came out exactly where I wanted. Then I went up a size and felt the two skins, but then a bit of air and then something 'strange'. I stopped when it was...- timhoward
- Post #7,580
- Forum: Electrical Forum
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MEGGER Bm223 - how to use it?
This is working: https://tinyurl.com/w8j8x9x9- timhoward
- Post #10
- Forum: Electrical Tools and Products
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MEGGER Bm223 - how to use it?
Try this https://tinyurl.com/w8j8x9x9- timhoward
- Post #8
- Forum: Electrical Tools and Products
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MEGGER Bm223 - how to use it?
His playlist on testing is excellent and I'd watch the whole playlist including the introduction. (There has been a minor change to RCD testing in amendment 2 but the method he shows can still be used, it just goes above and beyond the minimum requirement now) When you have finished those, you...- timhoward
- Post #7
- Forum: Electrical Tools and Products
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MEGGER Bm223 - how to use it?
Back from the pub now.... Link to the manual: https://www.industrialcalibration.co.uk/downloads/Megger%20BM221%20BM222%20BM223%20BM227_SER_UG.a Can I stress that this instrument is for dead tests so don't go near any live circuits with it! Either practise on a completely disconnected cable, or...- timhoward
- Post #4
- Forum: Electrical Tools and Products
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MEGGER Bm223 - how to use it?
Look on YouTube for John Ward. You want the videos on continuity testing and insulation resistance testing. That device is gloriously simple there are only two wires. To null the leads for continuity join them together and press test.- timhoward
- Post #3
- Forum: Electrical Tools and Products
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Some MFTs have PSC/PFC test combined, I wonder why others have it as a separate test
What scale of difference do you see? For me the readings are generally slightly higher on the L-N setting, using the same lead and simply moving the plug. We are talking 0.05 ohm variation at most. The readings on both settings are however slightly inconsistent in their own right; 10 tests in a...- timhoward
- Post #15
- Forum: Electrical Forum
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Some MFTs have PSC/PFC test combined, I wonder why others have it as a separate test
You have certainly piqued my interest. I have a 1731 that I rarely use. I illogically grab the 1553 almost every time as the screen is easier to read, it ‘just works’, the batteries last forever and it never confuses me. I’ve also found the low current loop tests are more accurate than its...- timhoward
- Post #10
- Forum: Electrical Forum
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Some MFTs have PSC/PFC test combined, I wonder why others have it as a separate test
I’m certainly not trying to teach you of all people to suck eggs, but what comes to mind is that on one well known tester L-PE is low current by default but L-N only ever does high current as it will never trip a RCD. Any chance with all the excitement of tea and biscuits with Napit that you...- timhoward
- Post #8
- Forum: Electrical Forum
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Megger BM200
I've never been able to get hold of a service manual for the Megger BM80 or 200. It's a long term goal of mine as I like them. I've had plenty of them open , and the user-service tasks are pretty much changing fuses and cleaning the contacts on the rotary selector switch. If it isn't battery...- timhoward
- Post #5
- Forum: Electrical Tools and Products
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EV charger issue - Garo PME trips
I have to say I think I was barking up wrong tree - it certainly looks more like an earth leakage or over current issue than a PEN fault detector issue. It makes sense to follow the advice above.- timhoward
- Post #15
- Forum: Electrical Forum
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Megger MIT420/2 unstable continuity readings?
Have you tried different test leads?- timhoward
- Post #2
- Forum: Electrical Tools and Products
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EV charger issue - Garo PME trips
Are you suggesting an EVCP installed on a non-dwelling doesn't need to comply with BS7671?- timhoward
- Post #10
- Forum: Electrical Forum
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EV charger issue - Garo PME trips
That is a great question and I did make an assumption there. I assumed the contactor tripped as there are 2 other 30ma Type A RCDs upstream and I suspected one or both of them would also trip if it was the RCD tripping. Unfortunately I'm not aware of any better standalone ones that aren't...- timhoward
- Post #7
- Forum: Electrical Forum
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EV charger issue - Garo PME trips
My guess is either a faulty Garo unit or a regular supply voltage fluctuation that is too short to be picked up by the sampling the car charger is doing hence you can't see it on the app. Leaving a decent multi-meter connected on min and then max might prove the point, failing that a voltage...- timhoward
- Post #4
- Forum: Electrical Forum
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Mystery light failure
IMHO they aren't great. An MK one from Screwfix would be easier to fit, the terminal screws are bigger and they don't fall apart!- timhoward
- Post #14
- Forum: Lighting Forum
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Should i buy Megger MFT-x1 or Fluke 1664fc
If I was spending 95% of my time on T&I contracts I'd consider something high end like the X1 to handle logging of all of the data. But as a lot of my work seems to involve farms and dusty building projects I prefer to use simpler and older testers so if accidents happen (or theft) the financial...- timhoward
- Post #8
- Forum: Electrical Tools and Products
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Low Ze, high PFC in industrial application
I think 434.5.1 , 2nd paragraph, is the bit you are searching for. I'm not saying it isn't a problem, just that it might not be a problem depending on what rating fuses are where.- timhoward
- Post #4
- Forum: Electrical Forum