I’ve got one a couple of days ago. I’ve only bench tested it and tried attaching the magnet to various mcbs. It’s good to know it works on deeper rcbo terminals, and that the resistance isn’t overly excessive. Cheers Gaz👍
Thought it would add some, however I am surprised how little to be honest may have just twisted my arm in buying a few. Great video again keep up the good work 👍
Thanks for this Gaz, I very much enjoy your channels. Would you say the 0.05ohm gain in resistance is from the inside of the RCBO or it not being a perfect connection between the bit head and screw?
Got one and are brilliant. Just wish they made a longer one for the bigger, say 12 way 3phase boards. I know I could joint a bit of single into it but that’s just adding more points of failure lol
I always used. Crocodile clip between buzz bar and earth bar and as you said the amount was very low to make any confirm and NIC assessors over the years never had any concern
Question regarding the r1+r2 link lead. You often see its unacceptable to work backwards for your r1+r2 etc zs-ze=r1+r2 because of parallel paths. But if your not disconnecting your cpc from the DB and leaving it connected in the earth bar, how is this any different from the above? Wouldn't you still pick up those parallel paths?
Thanks for doing the follow up video. However, that test uses magnetism PLUS gravity... a better test would be in a vertically oriented board - as in real life. I'm betting that the resistance would climb further as the contacting surface area of male to female Pozi geometries reduces as the weight of the cable pulls the driver bit down and away. Even rotational position of the screw's pozi head might affect this, depending upon the strength of the magnet. Pre wear of the screw head might also affect this, and crap stuck to the magnet too. Good for quick and dirty testing, I reckon.
Why not just remove busbar cover, attach croc to both ends and connect to the earth bar and the busbar, and then just open the breaker of the circuit you want to test?
Because of the internal resistance of each circuit breaker. It may be slightly different between each circuit breaker and therefore you are not getting and accurate result.
When you constantly & physically depress “croc clips” when using your chosen MFT for desired results, how could this gimmick give you the same confidence with a magnet 🤷♂️
I’ve got one a couple of days ago. I’ve only bench tested it and tried attaching the magnet to various mcbs. It’s good to know it works on deeper rcbo terminals, and that the resistance isn’t overly excessive. Cheers Gaz👍
Thanks Daddy B 👍🏻
Thought it would add some, however I am surprised how little to be honest may have just twisted my arm in buying a few. Great video again keep up the good work 👍
As soon as these are back in stock will be ordering one (as I was late to this new product - thanks for the tip) 👍
Thanks for this Gaz, I very much enjoy your channels. Would you say the 0.05ohm gain in resistance is from the inside of the RCBO or it not being a perfect connection between the bit head and screw?
Got one and are brilliant. Just wish they made a longer one for the bigger, say 12 way 3phase boards. I know I could joint a bit of single into it but that’s just adding more points of failure lol
They do a 1m version
I always used. Crocodile clip between buzz bar and earth bar and as you said the amount was very low to make any confirm and NIC assessors over the years never had any concern
I think it’s a good bit of kit to have in your MFT bag
Fantastic video Gaz As always
👍👍👍❤️
They’re so easy to make yourself & you can use thicker flex which should help with the difference in readings.
what do you do at the driver end to keep it magnetic
@@curlyzoo00 I’ve got an Irwin Magnetiser/demagnetiser but, they’re easy enough to make yourself too.
2 strong magnets does the job.
Thanks for the videos much appreciated. Quick ? , is the mtf1711 suitable for all current regulations or do I need something newer?
For me yes the 1711 is ok just depends on your thoughts about testing different types of RCD’s
This may help
ruclips.net/video/CqQfN3-nf4s/видео.html
Question regarding the r1+r2 link lead. You often see its unacceptable to work backwards for your r1+r2 etc zs-ze=r1+r2 because of parallel paths.
But if your not disconnecting your cpc from the DB and leaving it connected in the earth bar, how is this any different from the above? Wouldn't you still pick up those parallel paths?
Thanks for doing the follow up video. However, that test uses magnetism PLUS gravity... a better test would be in a vertically oriented board - as in real life. I'm betting that the resistance would climb further as the contacting surface area of male to female Pozi geometries reduces as the weight of the cable pulls the driver bit down and away. Even rotational position of the screw's pozi head might affect this, depending upon the strength of the magnet. Pre wear of the screw head might also affect this, and crap stuck to the magnet too. Good for quick and dirty testing, I reckon.
Anybody know who sells them ? I can't seem to find them many thanks
The link is in the description 👍🏻
Why not just remove busbar cover, attach croc to both ends and connect to the earth bar and the busbar, and then just open the breaker of the circuit you want to test?
Because of the internal resistance of each circuit breaker. It may be slightly different between each circuit breaker and therefore you are not getting and accurate result.
Where can I buy a set
Fantastic bit of kit
Link in the description 👍🏻
Just put the r1r2 link in circuit when you null the test leads?
I have purchased one
Let me know how you get on with it 👍🏻
Does the magnetic tip have any effect on the readings?
Where can I purchase one of these.
Link in the description 👍🏻
The resistance is only so low because the breaker isnt upright normally you will add about an ohm
When you constantly & physically depress “croc clips” when using your chosen MFT for desired results, how could this gimmick give you the same confidence with a magnet 🤷♂️
Great in colleges - point taken 👍🏻
Negligible in most cases.