I'm pleased you mentioned dual supplies at the end of the video. I blew a PCB becasue I turned the power off and didn't test do a safe isolation, not realising that parts of the PCB were still live through the second supply even though the boiler display was dead.
Excellent tutorial Derek ,imagine the shock of actually finding a live boiler case before commencing with a service.......little life saver this procedure ...cheers Derek.
Another great video Derek, always great to watch your videos and to learn from them, thanks for the brilliant videos and all the time and effort you put in too it.. 👍👍😀😀
At 13:49 there is a switched socket and 3-pin plug. I understand that gas appliance electrical supplies should be an "unswitched socket and plug" or "switched fused spur". Maybe when the video is updated this point could be made about your test installation. Edit: I notice you mention this later on. An edit wouldn't hurt to catch the person who leaves the video before it's mentioned.
Can’t thank you enough for the continued help and knowledge you prove through your videos. Part of the reason I’m now a qualified engineer is thanks to you. What TBs would you recommend getting familiar with?
I hope someone has pointed out that at a out 12:10 into the video you say RCDs trigger at 30Volts. It's Milliamps... It may be worth editing the video becasue this is a significant bit of incorrect info IMHO.
Sorry to say, I rely on you for the TB 😂 I work for a big company, so I not have full access to gas safe site. reading these TB send me to 😴 you make it understandable 👍🏻
just a quick question regarding *lead pipe* on gas fittings. How to deal with it?What does regulations say about it if we find it used alongwith copper pipe in any property. Or on downstream on gas meter.
Great video mate! Just wondered if you could give a good description of a TTB on an instantaneous water heater. (TTB =) plus how it works? Was under the impression it’s a thermal trip breaker?
Hi Derek. The 50 volt AC is "safe" to touch so a voltage indicator like the blue Volt Stick should be the only one used. Some of the ones behind you in the video are 100 volt AC so a lower voltage could be present and not detected until you touch it. I see below someone has posted about an Earth loop impedance test and polarity. These are not safe isolation and should be left to a qualified electrician to carry out before the electrical installation is put into service. Also pointed out below most RCD's trip at 30mA. Gas engineers need to also understand the under certain electrical fault conditions especially on a PME / TNCS Earthing arrangement voltage may be present on pipe work within the property if they originated from the ground. ie metal gas service pipe. Hence the requirement for Equipotential Bonding. So a Volt stick safe to touch test is very important to stay alive. Keep up the good work Derek
Ever since Gas Safe took over Corgi its been a joke. Phoned up o ask a certain non straight forward question they said"well you should know" I called to ask if spiral ducting was ok on a concord boiler that was I.D'd for that reason. Normaly its not, but in this case it was stainless steel. After me telling them what I just stated initially, they said "we'll get back to you"
Where in TB 118 is the gas operative instructed to perform a 'safety touch test' or an 'earth loop impedance test' or a 'polarity test' - the ONLY 'procedure' derined in TB 118 is the Safe Isolation procedure ! This video does nothing more than add to the confusion within the industry because TB 118 is ill-conceived, misguided, misworded, inaccurate and contains an unforgivably dangerous bunch of words - it should be no more than 2 pages long and explain what is in the title of the TB - a SAFE ISOLATION PROCEDURE ! The objective is simple - prove the test gear good, isolate the appliance, prove the appliance is dead and then perform a confidence test of the equipment to prove it is still good. Th edocument has opened the flood gates for test gear manufacturers to sell kit for checks that are NOT required to keep the gas operative safe ....
Always on point Derek! You break it down to understandable terms instead of all the waffle in a TB 👍
I'm pleased you mentioned dual supplies at the end of the video. I blew a PCB becasue I turned the power off and didn't test do a safe isolation, not realising that parts of the PCB were still live through the second supply even though the boiler display was dead.
And to think you was thinking of calling it a day, you bring another quality video out. On point sir👍
Excellent tutorial Derek ,imagine the shock of actually finding a live boiler case before commencing with a service.......little life saver this procedure ...cheers Derek.
It’s also worth checking the pins on a 3 pin plug (when you unplug it) with the non contact volt tester to make sure it isn’t live from another feed.
Excellent & under rated comment 👍
Just done this on my recent ACS reassesment first time id been over it great video as always
Great video once again, Derek!!!, Keep up the good work, Cheers.
Another great video Derek, always great to watch your videos and to learn from them, thanks for the brilliant videos and all the time and effort you put in too it.. 👍👍😀😀
At 13:49 there is a switched socket and 3-pin plug. I understand that gas appliance electrical supplies should be an "unswitched socket and plug" or "switched fused spur". Maybe when the video is updated this point could be made about your test installation.
Edit: I notice you mention this later on. An edit wouldn't hurt to catch the person who leaves the video before it's mentioned.
Maybe I should just do 30 second videos then because most people leave within 30 seconds
Can’t thank you enough for the continued help and knowledge you prove through your videos. Part of the reason I’m now a qualified engineer is thanks to you.
What TBs would you recommend getting familiar with?
Just keep them to hand so you can reference when needed
@@tomkatgastraining are there any you would say are a need to know, like this one?
I hope someone has pointed out that at a out 12:10 into the video you say RCDs trigger at 30Volts. It's Milliamps... It may be worth editing the video becasue this is a significant bit of incorrect info IMHO.
its ok derek your here to inform us..
Sorry to say, I rely on you for the TB 😂 I work for a big company, so I not have full access to gas safe site. reading these TB send me to 😴 you make it understandable 👍🏻
Back on form ! good man !
Phil Brown
Nottage Gas & Heating (est 1972)
Excellent Derek
Cheers Derek, great video as always 👍
Thank you, Nikola Ditsov
Another very handy video! Keep up the good work!👍
just a quick question regarding *lead pipe* on gas fittings. How to deal with it?What does regulations say about it if we find it used alongwith copper pipe in any property. Or on downstream on gas meter.
If it’s not leaking gas it’s fine but if you are installing a new appliance such as a boiler it should be replaced as it won’t be the correct size
Thank you for another great video👍👍👍
Great video mate! Just wondered if you could give a good description of a TTB on an instantaneous water heater. (TTB =) plus how it works? Was under the impression it’s a thermal trip breaker?
Videos on water heaters in defo on the to do list 👍🏻
Can you please do a video on gas regulations
On the to do list 👍🏻
Very informative. Thanks Derek
Hi Derek. The 50 volt AC is "safe" to touch so a voltage indicator like the blue Volt Stick should be the only one used. Some of the ones behind you in the video are 100 volt AC so a lower voltage could be present and not detected until you touch it. I see below someone has posted about an Earth loop impedance test and polarity. These are not safe isolation and should be left to a qualified electrician to carry out before the electrical installation is put into service. Also pointed out below most RCD's trip at 30mA. Gas engineers need to also understand the under certain electrical fault conditions especially on a PME / TNCS Earthing arrangement voltage may be present on pipe work within the property if they originated from the ground. ie metal gas service pipe. Hence the requirement for Equipotential Bonding. So a Volt stick safe to touch test is very important to stay alive. Keep up the good work Derek
Ever since Gas Safe took over Corgi its been a joke. Phoned up o ask a certain non straight forward question they said"well you should know" I called to ask if spiral ducting was ok on a concord boiler that was I.D'd for that reason. Normaly its not, but in this case it was stainless steel. After me telling them what I just stated initially, they said "we'll get back to you"
where can i find the regulation that said i cant use a multi meter for safe isolation.
Gas safe tb 118a
Another great video..
Very informative 👍
Shane Hunt
Excellent Derek. helpfull video
ray hurrell brilliant
Brilliant as always 👍
Great videos.. keep em coming..
Thanks mate
Easier on a plug what about testing on a fused spur not many boilers are on plugs not covered
It’s the same process wether it’s on a plug or a fuse spur
👍Thank you
Thank you so much its really helpful
Derek! Start Up a Discord Channel! We need a Guru like you and others on tap and on-line to help each other!
Very informative. Thanks for your valuable educational support.
Kindest regards Adnan
Brilliant video
👍 Sue Warrington
If your safe to touch test failed how would you prove its not safe 🤔
Using a multimeter if you have the training or getting a qualified electrician to prove it’s safe
Callum Collins - Tomkat Training
👍👍👌👌
Stephen Humphreys
Tomkat👍🏻
👍👍👍
✅👍🏻
Jon-Paul Ward
my mate got electrocuted when fixing a boiler and died he now works as a milkman
As a comedian you are also dead, don’t give up your day job
steve ward
👍🏽
🤘😎🤘
James O’Brien
MP 06/02/23
Where in TB 118 is the gas operative instructed to perform a 'safety touch test' or an 'earth loop impedance test' or a 'polarity test' - the ONLY 'procedure' derined in TB 118 is the Safe Isolation procedure ! This video does nothing more than add to the confusion within the industry because TB 118 is ill-conceived, misguided, misworded, inaccurate and contains an unforgivably dangerous bunch of words - it should be no more than 2 pages long and explain what is in the title of the TB - a SAFE ISOLATION PROCEDURE ! The objective is simple - prove the test gear good, isolate the appliance, prove the appliance is dead and then perform a confidence test of the equipment to prove it is still good. Th edocument has opened the flood gates for test gear manufacturers to sell kit for checks that are NOT required to keep the gas operative safe ....
Why do you say everything like it's a question lol
👍🏾