Відео

Typically a heating system would need the fuse connection unit (FCU) to be fitted with a 3 Amp fuse. FCU’s come with a 13 Amp fuse as standard

My understanding is that the phase sequence test is only carried out at the motor terminals as a functional test.

@headsup4sparkies thanks for the reply I did also have to do the phase sequence of the main supply. I passed the AM2 anyways

@@joeraby1370Thanks for the feedback - good to know. Well done for passing your AM2 👏🏻🏅- Now you’re qualified, your skilled journey begins - keep striving for the best as our industry is ever changing.

Thank you

🙏

Hi … When testing between Line and Neutral (PSCC), the voltage potential is 230V .. we double this to allow for the PSCC between Line conductors as these would have a potential of 400V. The maximum potential to earth (PEFC) is 230 so therefore is not doubled. You only double the highest PSCC value.

All measurements when forming conduit, should progress from one end. The conduit is always placed in the former with the “measured end” under the stock. Then each mark should line up on the former at the “point of bend” which is were the conduit and former separate prior to bending. Some people do mark the formers, but this mark is unreliable as it alters depending on which hole you place the stock on. The exception to this is where the mark on the conduit is for the “back of bend”. Then you would follow the instructions as shown in the video.

Works for me 😀

Did you pass it mate? I’ve got mine in a couple week bricking it

Yea passed 1st time mate 👍🏻 I’ll be honest, if your here looking up videos to pass then you’ll probably be one of the guys that will pass either 1st time or on a return attempt 👍🏻 good luck 🤞🏻

Glad you found this useful 😀

🙏 Thank you .. hope it has helped ..

Hi … If the board is at the origin of supply - then Zdb and Ze would be the same. Ze recorded on certificate and Zdb recorded on schedule of test results. If there is a sub main between the origin and the board under test .. then Zdb is measured at board with earth disconnected - and Ze from origin recorded on the certificate.

The distribution board at the origin supplying the sub main, would also record this supply’s Zs on on it’s own schedule of test results, taken in the same manner but with the earth connected.

The board in the video is assumed not to be at the origin of supply … Hope this helps 👍🏻

​@@headsup4sparkies right... So like a three phase distribution circuit?

Yes … we call them “Sub-Mains” when we distribute the supplies from DNO to distribution boards… and the circuits from there are “final sub-circuits” supplying current using equipment without further distribution.

This can be simple - or complex, depending on the variety of methods employed on the route. You can select the most used method on the route / the method with most detrimental effect .. or so on. The inspector should use engineering judgement to decide … this link to IET - Supporting BS7671 Appendix 4 .. might help electrical.theiet.org/media/1617/appendix-4-of-bs-7671.pdf

Thank you 🙏.., I’m glad you found this helpful 😀

More to come!

Thank you! Cheers!

www.google.co.uk/search?q=hilmor+pipe+bender&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari#imgrc=D9SEkwT73edTWM

When the conduit is resting in the former, the bend will be at the point where the conduit and former separate (underneath) … I generally place my little finger underneath to “feel” where that point is - and try to get the mark in the conduit at that point.. However - you don’t have to get it exactly right, as you can simply adjust the depth of the set. To add depth, put a little more in each bend. To decrease the depth, take a little out of each bend. Making sure to adjust the existing bend and NOT putting and additional bend in. Some people attempt to “mark” the former on top at the “point of bend” but you often have to change the position of the “stock” to get the measured conduit mark where you need it - as soon as you do this, the mark on the former will now be in the wrong place. Try not to over think it - bending conduit is more of a knack than an exact science. The ability to manipulate the bends neatly is the main skill. Practice makes perfect 👌🏻

Thank you …

🙏

Thank you 😀

Thank you very much for your contribution… this particular system is aimed at the AM2 requirements .. You are clearly experienced with these systems. From my own research, the only thing I can be sure of is that there is no such thing as a “typical” system.

Thank you

I’m afraid not .. the running coupler needs to run from one piece onto the next piece. Therefore it will always leave some thread behind it. The way it’s shown leaves half the thread on the existing piece, and puts half the thread on the new piece. Therefore leaving half the thread exposed on the back of the existing piece, with both ends electrically (earthing) and mechanically secure.

@@headsup4sparkies ah yeah makes sense now thank you

@@headsup4sparkies also the nipple part you threaded into the box is this something for the am2 that they will provide ?

😂🤣

Actually working on Contactor and DOL video now .. once it is launched on the other platform it will be on here too

Pretty much any UK electrical wholesaler … here’s a link from a quick search www.toolstop.co.uk/irwin-hilmor-el32-conduit-bending-machine-with-vice-and-20-25-32mm-formers-t113100d-p80043/

😂 … licence free rock n roll 😎

There are different names, but I think the most common in the UK is made by Hilmor .. here’s is an example link from a UK wholesaler .. www.tlc-direct.co.uk/Main_Index/Conduit_Steel_Index/Conduit_Bender/index.html?ad_position=&source=adwords&ad_id=414374435730&placement=&kw=&network=g&matchtype=&ad_type=&product_id=&product_partition_id=&version=finalurl_v3&gclid=Cj0KCQiAwqCOBhCdARIsAEPyW9lmDNmlUux6qJls7H9S6mp5RPNTMG9YdOS4OYPuVNj5bmCCiSHvCiQaAn33EALw_wcB