Hey how have you got your main switch wired? Is the bottom of the main switch just bridged?
@theea346623 күн бұрын
The main switch is not bridged it is the CB separated and located at the right side. Are you looking at the 3 phase CB on the very left? If so the underside is the Line side. The Neutral and Earth bars have a bridge, its this bridge that you are removing. This is so that you can test the earthing resistance of the earthing; mains, cable and equipotential separately. I noticed you removed the other question you had which might help explain this more. Your other question about the load side being on top and not the bottom is a good one that many new electricians wonder about. The reason for putting the load side on top is for safety. Imagine if dust or ants create a short and a fire for whatever reason you want your damage to be on your sub circuits where you can easily replace wires and not in your submains or mains that usually underground and will cost more and is harder to replace and repair.
@lyntinatkin7847Ай бұрын
Hi Nicky. Thanks for the video. You've helped me out a great deal. I want to build a test fault board to practice on. Do you have any resources you can recommend? Thank you
@theea3466Ай бұрын
@@lyntinatkin7847 Use the installation verification Standard.
@otablu685Ай бұрын
miss youre clutch. im watching this 3months prior. churr
@nixy17562 ай бұрын
Super helpful thank you !!
@warrenkelly45612 ай бұрын
Hi are you able to tell me how you do the IR on the whole installation at the board? Secondly, how do you do a short cct test? thank you
For Complete Installation Bridge A and N at supply. Or Bridge Line and Load if meter. All CBs and RCDs On Disconnect MEN/HWS/Oven elements. Test Ebar to Nbar
@warrenkelly45612 ай бұрын
Hi thanks for getting back to me quick. I dobt know why Inqueationed about the sub mains lol. My second question. Why do you test on the load side of the MS when testing consumer mains? does it matter if we test from the line side ad well? I would imagine teating on the load side, you're sending voltage down to the sub circuits as well? thanks
@theea34662 ай бұрын
At 58seconds I say load side of supply to L1 L2 and L3. Remember also Main Switch is turned on but all other CB and RCDs are off so it's not testing any sub circuits.
@warrenkelly45612 ай бұрын
It makes sense now! in our pract we don't have a sun main to check. Only consumer mains and final sub circuits:) thank you
@theea34662 ай бұрын
@@warrenkelly4561 All good. Just remember lots of places do run submains. As long as you get bigger picture.
@warrenkelly45612 ай бұрын
the 3 phase switch on the right had side you check your consumer mains, Is that the main switch? and the CB you check your submains on the left, is that CB meant to be your service fuse?
@theea34662 ай бұрын
50secs -Main Switch 4mins -Submain. This is a CB that runs cable to another location like a shed or outdoor area There is no service fuse on here. A service fuse runs along service cable (Incoming Supply) My service cable is the extension lead cable that I had removed at the very beginning of this test.
@theea34662 ай бұрын
Check out the installation diagrams on this website. It may help. www.electricaltechnology.org/2021/03/wiring-consumer-unit-distribution-board-rcd.html
@warrenkelly45612 ай бұрын
How did you check IR on sub mains gain? you removed the nuetral, then nuetral to earth? then active load to earth. And neutral you removed to active on load side?
@theea34662 ай бұрын
Rewatch @4mins Submain is not on a RCD it's a CB so you need to remove connected N from N bar. Need to test N and E to Active E to A and N to A. The Neutral was removed at the Neutral bar. Usually your load side comes out from the top. This is because dust and bugs can accumulate on top so if you have a fire it's best it happens on the more protected side.
@toshionagata133 ай бұрын
Why to check the continuity for main earth and equipotencial bond you remove from the earth bar and to check the GPO’s and lights you didn’t remove? Very good videos but I’ve got confused..
@benmaynard60773 ай бұрын
Thanks. Very helpful for capstone
@TradieTrev5 ай бұрын
You'd be just out of your time now I imagine Nikki, love the video!
@stevechadwick1807 ай бұрын
Earth continuity less than 1ohm? Main earth and equipotential have to be 0.5 ohms or less
@theea34666 ай бұрын
Yes at 1.47 I say all the resistances you'll measure are under 1 ohm referring to getting your tester tested properly it wasn't meant to be specific to Main Earth or equipotential.and includes all test readings. Technically final sub circuits can go up as high as 3 or 4 ohms and be a pass according to AS/NZS 3017:2007 Table 3.2. Main Earth and equipotentialbonding does need to be least than 0.50 ohms. Watch from 4:00. All final circuit resistance readings need to comply with earthing Table 3.2 in AS/NZ3017. The limit of ohms is actually dependant on the size of the cable, the CB size and type. So some cable with a reading of 0.4 ohms will actually be a fail. Some with a reading of 0.8ohms is actually a pass. Get familiar with the table you will need this table during your exam.
@stevechadwick1806 ай бұрын
@@theea3466 thanks for replying. I was being a smartarse. I think you are doing a fantastic job putting yourself out there as an apprentice and doing a testing presentation. Shame some tradies weren’t as dedicated to the trade like you. Just a pointer on earth resistance there is a sub circuit where the earth resistance reading is above 1 ohm. Maybe a reference to Table 8.2 (from memory) to check what the maximum resistance allowed for the circuit under test. Keep up the brilliant work. Cheers Steve
@theea34666 ай бұрын
@@stevechadwick180 Table 3.2 goes up to 6 ohms in 1mm cable but got to keep in mind limits and rules in AS 3000 in regards to cable size for power and lights. If the thinking is that the final sub circuits just always less than 0.50 ohms apprentices will struggle to pass.
@stevechadwick1806 ай бұрын
@@theea3466 When we delve in and only good tradies will delve in and start researching and asking questions it gets deeper. I noted you said you need to ascertain if the installation is new or old and this will make a difference to the insulation readings. 50Mohms opposed to 1Mohm. This would also need to be cross reference with the SIR (service and Installation rules) unless working in WA or Qlds where they have there own name for this document where mains are required. To have a reading of no less than 50Mohms ( that’s from the VIC SIR and from memory). Also another one for old players the same question asked when performing the main earth and equipotential resistance test prior to the AS/NZS3000:2007 the reading would pass if it was 2ohms or less. So doing a test on an old installation 2ohms may be acceptable.
@theea34666 ай бұрын
@@stevechadwick180 Thanks Steve. I do mention the difference between acceptable levels between new and old installations and say to ask your exam officer if they don't tell you its new or old. I made so many videos I'm sure its in the first one. I retook a few videos and I didn't edit so im hoping its there and not in a deleted video.
@nazmussakib21818 ай бұрын
Appreciate your efforts, i would love to know you better, can i have your ig/contact no.?
@Askfordannygyeah9 ай бұрын
I have a question. When testing your 'consumer mains' how is it possible to do that. If the consumer mains has power to it and your testing it with your IR tester wouldn't that technically blow up your IR tester? From my understanding the consumer mains has a fuse out on the street so unless your actually disconnecting it out there i dont see how you could even test that without causing harm to the cable? cheers
@theea34669 ай бұрын
It's a new installation. You have run the cable but it's not connected at Connection Point or Point of Attachment. You have to check the entire installation before connection. :)
@Askfordannygyeah9 ай бұрын
Thank you so much that makes sense now @@theea3466
@bonaminhrasmey429 ай бұрын
Are your circuit has a ring circuit?😊
@theea34669 ай бұрын
Be that ring circuit in circuit are? 😎😁
@bonaminhrasmey429 ай бұрын
❤nice, thanks 😊 best of luck with your exams 😊
@theea34669 ай бұрын
😎😁💪🍻🍕 Good luck to all the lads and ladies studying hard. Should all be proud of yourself.
@sameer719310 ай бұрын
Thanks a lot for your help, I just passed my capstone, and your videos helped me a lot 💡🎉🎉🎉
@nathanielcrowe1834 Жыл бұрын
Thank you so much absolute legend !
@johnfitzpatrick2469 Жыл бұрын
Should you be wearing rubber insulated gloves and leather overs, when carrying out * Earth leakage * Continuity * Resistance When the mains power switch (RCD) is off and checked zero readings, you can probe with bare hands? 🐝💨
@theea3466 Жыл бұрын
These test are performed to check system integrity before any supply power is connected. So no you don't need rubber insulated gloves. E.g You have just wired a new installation on a new house, your checking system before supply is connected.
@presssack4 ай бұрын
Firstly, there is no scenario in which wearing PPE is wrong. If you want to make it a habit to wear gloves, go for it. Also, you should note that when running an insulation resistance test, your tester is pushing 500V of DC current through the installation. You should definitely be careful when conducting this test.
@goodvibes0101 Жыл бұрын
Legend hopefully all is going well with your career and future videos of the floods were insightful hopefully all is ok now
@goodvibes0101 Жыл бұрын
Excellent Niki great effort making yourself a prop board a great resource for all the new sparkies entering the work force plenty of good tips 👍all the best for the future from someone who was an apprentice in 1975 😊
@goodvibes0101 Жыл бұрын
Well done you're a real cobber to all those stumping up to the capstone exam 👍
@MegaBken Жыл бұрын
Thanks for your great videos they help. Do you still have your board?
@theea3466 Жыл бұрын
Yes and No. I had to pinch parts for jobs I needed to do.
@MadFishing247 Жыл бұрын
G'day mate. Thank you so much for helping a heap of us get through our capstone. Cheers from Darwin NT.
@theea3466 Жыл бұрын
So glad to hear bud.
@mbrenengen Жыл бұрын
Is everything reversed because you are in the Southern hemisphere?
@Tuesdayb2008 Жыл бұрын
I miss being an apprentice hahah fun day.
@snappaclappa8693 Жыл бұрын
Why do you disconnect the main Neutral?
@kylemailey7661 Жыл бұрын
Hi I been working as a ta and thinking of getting qualified,,, do you do one on one tutoring on your practice board?
@theea3466 Жыл бұрын
No I don't sorry bud. When you sign up for an apprenticeship a teacher will go over these practice tests with you.
@blake3871 Жыл бұрын
Thanks a lot of these videos. A lot of these points seem to have been neglected from my course. Something I did notice is that earth continuity cannot be done with a normal multimeter. Not sure if they allow this in the capstone. AS/NZS 3017 says the test equipment must comply with AS 61010.1 and IEC 61557. In IEC 61557-4 Resistance of earth connection and equipotential bonding states: 4.2 open circuit voltage shall not exceed 24 V and shall not be less than 4V 4.3 Measuring current within the minimum measuring range according to 4.5 shall not be less than 0.2A 4.5 Measuring range within the operating uncertainty in accordance with 6.2 is maintained, shall include the values between 0.2 and 2 Ohms normal mustimeter do not measure at 200mA and are not accurate for these low resistance values. Hence why it is only giving you one decimal place. Just something to keep in mind as it caught me out too.
@theea3466 Жыл бұрын
AS/NZS 3017 Page 8 says test equipment should comply with requirements of IEC 61557 and Page 6 states 3017 refers to IEC 61557 Parts 3 & 5. 4.3 is saying your testing range needs to be larger than 0.2ohms. Ideally you'd use analogue ohmmeter as figures show in AS/NZS3017 My multimeter reads more than 1 decimal point as I show in the video and multimeyer ranges do go below 200mA. Different multimeters have different ranges, accuracy and resolution..
@nicolaamw9765 Жыл бұрын
sitting capstone in a week these videos have helped be prepared thank you
@animekingz5552 жыл бұрын
yes. wish she had more content. its very useful
@timothyworrall23702 жыл бұрын
Absolute champion, thank you so much
@mrseanpride64492 жыл бұрын
You removed earth from the hot water unit but not from the equipotential bonding. Shouldn’t you take it off the pipe as well?
@theea34662 жыл бұрын
Great Question. I have no pipe on here just earth stake. What is equipotential bonding? What is it attached too? In this case it's the metal water pipe and its attached to my Hot Water System. Your water pipe may have a parallel path so that's why earth comes off the HWS.
@russelsprout21552 жыл бұрын
not all heroes wear capes
@russelsprout21552 жыл бұрын
I passed my certificate of proficiency interview yesterday because of these videos i can get my NSW licence now
@markstone55932 жыл бұрын
perfect, very good demonstration thank you
@bennyogunshola97792 жыл бұрын
Hi Nikki, please let me have your contact , i have some job for you in Our RTO to design this board , please share your contact detail
@mikeadler4342 жыл бұрын
👍👍
@lotharhennig44062 жыл бұрын
Hi Could you give me a clue as to how you test the earth continuity on a underground cable connecting the MSB and a sub-board. Thank you
@theea34662 жыл бұрын
Depends on why your doing it? Keep in mind I'm not a teacher but will explain it the best I know how. If you know that N is sound and not intermixed you can attach the Neutral to earth at either the MSB or sub board. Then go to the other board that's not attached remove earth and Neutral from bars and test resistance if the resistance of both cables are lower than the maximum resistance according to table for cable size and CB size you know it complies. If it is strict testing like in capstone. You'd use a trailing lead or in fact any cable you have that is long enough to reach your MSB and Sub board. Step 1 Test the resistance of your trailing lead or cable. Write the ohms result down on paper or cardboard or enter into your phone. Step 2 attach lead or cable to the underground earth cable at one location either at at MSB or Sub board. Ask yourself what am I attaching this lead to? Have I attached the earth cable only for this cable under ground? Then walk the trailing lead to the other board. Remove the earth cable for that cable underground out of the earth bar. Test between Earth of the underground cable and trailing lead or connected wire in cable. Write the result ohms down. Then subtract the trailing lead or cable reading that you wrote down before. This will leave you with your restistance reading for just the underground cable. Does this help? Please don't be afraid to ask your teacher. Chances are if you don't know half the class won't.
@lotharhennig44062 жыл бұрын
@@theea3466 Thanks heaps great reply
@jacobfierro17492 жыл бұрын
Is there any good resources in wiring a domestic board?
@theea34662 жыл бұрын
If there is I haven't seen it yet. I was going to make a video on Main Switchboards so I'll try to get that happening. Things are a little chaotic with the flooding at the moment.
@joelrobertson43672 жыл бұрын
Why would a brand new installation have greater then 50M Ohms ? Teacher sent me here
@theea34662 жыл бұрын
It's in the NSW SIR and it's specifically states this for brand new installations that have brand new service conductors. Brand new wiring shouldn't have any resistance other than the wire itself. What increases resistance? Moisture, leakage..etc. SIR. 1.12.3.1 Minimum Insulation Resistance. 'The insulation resistance between conductors and between conductors and earth of new services shall not be less than 50 megohms when tested using a 500V DC insulation resistance tester.'
@MrDazFlash2 жыл бұрын
I do believe this is for the service side (level 2 work) as 1.12 ‘Provision for services and service equipment’
@alyceaistrope75212 жыл бұрын
4th year sitting capstone in May - thank god for your videos! Only experience I have had with a switchboard/mandatory testing is at tradeschool (and they don’t teach you much because they expect you to know it all already!!! Shame not all of us do!!!!) Thank you so much for your videos. I’ll be watching them on repeat for the next 2 months! Thank you thank you!!!!
@theea34662 жыл бұрын
This is why I created the videos. I was just really lucky to have some good teachers at my TAFE who did the precapstone tutorials who explained it in a commonsense way.
@420woodsy2 жыл бұрын
Someone get this women a slab .thanks for all the help!
@JakksMH2 жыл бұрын
This is great. Preparing for my Capstone prac later in the year ...
@theea34662 жыл бұрын
Good luck bud. If there is any topics you need help with let me know.
@JakksMH2 жыл бұрын
I will thank you. Great to see other female sparkies out there smashing it. I’m a 4th year at the moment.
@aleksandarserafimovski39922 жыл бұрын
1st year trying to understand 🤯
@dimitarmilojkovski61782 жыл бұрын
I got my capstone tomorrow If I pass it will be from you Thankyou !!
@theea34662 жыл бұрын
Wishing you the best of luck. Let us know how you went.
@jackmcconnell84712 жыл бұрын
Hi Nicky, ive got a Kyoritsu snap ,meter thats a few months old.it doesn't make the beeping noise when testing resistance. does this matter or should i take a different meter into my exam?
@theea34662 жыл бұрын
So many kyoritsu meters. You'll need to use a Meggar for Insulation resistance. They may provide one for you. Find out what brand they use and be familiar with it. You'll need to know how to calibrate it and test the voltage. In regards to the beep... Totally fine. The beeping is good when testing continuity it means you know there is a path without having to look at your screen. You'll just have to check by viewing the reading that you have resistance for continuity. With all other test you need to read your results and determine if the reading is appropriate.
@tianabrady22312 жыл бұрын
Sitting capstone next week, your vids have been amazing, thank you!!!
@theea34662 жыл бұрын
How did you go?
@lennyg84612 жыл бұрын
In AS/NZ 3017:2007 they have a IR test for complete installation…. Could you explain how that works? I’m confused on why it only test earth to neutral bar ?
@theea34662 жыл бұрын
Yes. When you test for complete installation your testing the entire system. Mains + Submains +Final subcircuits. If you test at the mains with everything connected your testing the entire installation. If this passes everything is fine. For the capstone you need to test each section to show you know how. Remember IR test is checking for any insulation leakage under pressure. The rules state all live conductors needed to be tested with earth. Neutral is considered a live conductor.