Excellent

@obloni_Electrical

Жыл бұрын

Thanks

I'm here again. Thanks for sharing it with us

my teacher way back in school ................. GOD richly bless u sir

@obloni_Electrical

2 жыл бұрын

Thanks very much Emmanuel

Very educative...

@obloni_Electrical

2 жыл бұрын

thanks Abdul Razak

Great job

@obloni_Electrical

2 жыл бұрын

thank you so much

Useful demo.

@obloni_Electrical

Жыл бұрын

Thanks

watched many experts you were the only one who explained what insulation resistance was

@obloni_Electrical

2 жыл бұрын

Great to know! Thanks very much alan stone

@danielteyehuago1633

9 ай бұрын

​@@obloni_ElectricalPlease kindly reply me

How much for an Insulation resistance tester In your country? I really love it and I want to learn how to to use it.

Good work

@obloni_Electrical

2 жыл бұрын

Thank you! Cheers!

Please can you use IR tester for continuity test, if yes how is it done.

Superb

@obloni_Electrical

2 жыл бұрын

Thank you

Nice work .help us know. how to connect rcd and rccd on a db

@obloni_Electrical

Жыл бұрын

Thanks very much. Please check this out kzread.info/dash/bejne/aZmduI-Yg7iueZs.html

12:13 Please can you interchange tje lead or probe during testing

can you use digital multimeter to do the testing

@obloni_Electrical

4 ай бұрын

No please.

good explanation, why is your installation missing earthing conductor ?

@obloni_Electrical

2 жыл бұрын

Thanks for your comment. the focus was on how to do IR test. I will make another video on how to do earth electrode resistance test and another one on how to properly connect earthing conductor in a consumer unit. thank you

Please my name is Owusu Ernest from Ghana and I would like to taught electricals by you. I am in an electrical school but I don't feel good in the practicals

@obloni_Electrical

6 ай бұрын

No problem contact me on WhatsApp at +233209323669

thank u, when we are testing with 500v do we need to have unplug all loads or not?

@obloni_Electrical

2 ай бұрын

Yes, all loads should be unplugged before the test

@obloni_Electrical

2 ай бұрын

Yes, all loads should be unplugged before the test

@BirukWolde-mn6hi

2 ай бұрын

@@obloni_Electrical how can i test if there is no option to unplug some loads?

@obloni_Electrical

2 ай бұрын

@@BirukWolde-mn6hi Switch that load off. The test is done on the cables in the wiring, not the loads so switch off , unplug or remove all loads before the test.

@BirukWolde-mn6hi

2 ай бұрын

@@obloni_Electrical ok thank u for your good response

Please i wantw to ask the following questions. 1. Must the voltage always be 500V 2. When testing for the insulation resistance test for fhe circuit must we turn the switch of the lighting circuit ON or OFF. 3. What happens or what do we do when the test is below 2 mega ohms 4. Must the time always be set to 10sec 5. Please what does it mean to say there's a leakage between conductors

@obloni_Electrical

9 ай бұрын

1. Ans: Common industry standards such as IEC 60255, and IEEE 43, recommend different test voltages and durations for insulation resistance testing depending on the application. Typically, the test voltage for low-voltage systems may range from 500V to 1000V, and for high-voltage systems, it can be significantly higher. 2. Ans: For an insulation resistance test, you should generally turn the switch of the lighting circuit OFF. This is done to prevent any interference from the connected load. 3. Ans: That would mean that the insulation on some cable(s) is not up to standard and you have to replace those cables. But you must know that there are standards and electrical codes that must be adhered to in every country. so the value “may” be different depending on the country and the application. 4. Ans: Testing for too long with excessive voltage(500V) can potentially damage the insulation on the cables, so it's crucial to adhere to the prescribed test parameters. 5. Ans: "leakage between conductors," typically refers to an unintended flow of electric current between two conductive elements that are not supposed to be electrically connected. This can occur due to Insulation Breakdown.

@danielteyehuago1633

9 ай бұрын

@@obloni_Electrical wow! Thanks for your response. I really appreciate it

@danielteyehuago1633

Ай бұрын

​@@obloni_Electrical Please can you use IR tester for continuity test, if yes how is it done.

@obloni_Electrical

Ай бұрын

@@danielteyehuago1633 Technically, Yes but you must note that, Insulation testers apply high voltage (usually around 500V) to measure resistance and this can damage delicate electronic components in a situation where such components are present. Multimeters use a much lower voltage for continuity testing, making them safer for general use. So in summary, for intentional measurements, use a multimeter for the continuity test.

Please what is the name of the testing device

@obloni_Electrical

5 ай бұрын

Insulation Resistance Tester. it is also known as Megger or Megger tester

@danielteyehuago1633

Ай бұрын

Please what's the model number and how can I get it

Thank you sir, but I want to ask, how will you know if there's a leakage in the system?

@obloni_Electrical

2 жыл бұрын

Before I answer, Please note that, there are rules regarding electrical circuits. And these rules are country specific. for instance, in Ghana, The Ghana Electrical Wiring Regulations 2011, (L.I. 2008) says that, the minimum acceptable IR test value should be 2M Ohm (2000000 Ohm) This means that, if the IR tester reads a value less than 2M Ohm, then the integrity of the insulation in a part of the circuit is questionable. In that case, you will have to do the test on individual final sub circuits to identify the particular circuit with the low reading IR (leakage) If the IR tester reads 0 Ohm, it means there is a direct short circuit between the cables in that particular circuit. So let's say, for instance, there is a leakage between the live conductor supplying the sockets and the earth wire. In such case, the IR tester will read a low resistance value, may be 0 Ohm, 10 Ohm, 200 Ohm 1K ohm, the reading will depend on how close the two cables with the insulation problem are, to each other a leakage simply means that, there is current leakage between; 1. Two live conductors (in the case of a three phase wiring) 2. Live and neutral conductors or 3. Live and earth Please let me know if I have answered your question to your understanding

@ahiagbleseth9500

2 жыл бұрын

You have answered it to my understanding, thank you sir

@ezekielobloni1982

2 жыл бұрын

@@ahiagbleseth9500 Great!

@danielteyehuago1633

9 ай бұрын

​@@obloni_Electrical well explained, so with this how do you rectify the leakage. 2. Is the IR tester the only instrument you can use for it. 3. What brand of the tester is the best

@danielteyehuago1633

Ай бұрын

​@@obloni_Electrical 14:51 Good explanation