Assuming it wasn't, do you think that would have made a difference?I very much doubt any of those where designed under the NECs requirements.
If so, specifically in what way?
Assuming it wasn't, do you think that would have made a difference?I very much doubt any of those where designed under the NECs requirements.
It may as the NEC is very conservative and installations made based on Article 220 load calculations results in an electrical system that has more capacity than will ever be used in most buildings.Assuming it wasn't, do you think that would have made a difference?
If so, specifically in what way?
Assuming is never a good plan.
Within sight of were I am sitting is a Dranetz PX5 PQ meter, a Flir P45 IR cam, my truck has two sizes of a torque wrenches and a torqure screwdriver in it. I am also a Flir certified level 1 thermographer.
FWIW you really should not 're-torque' connections, you end up damaging the conductors.
It may as the NEC is very conservative and installations made based on Article 220 load calculations results in an electrical system that has more capacity than will ever be used in most buildings.
Good summation.To sum up - good engineering and well maintenance prevent most of the problems. There are places with problems, including of harmonics, and it is recommended to periodically check the status.
Good summation.
I am glad you have remained a participant of the forum.
I believe in Europe they don't have anything like NEC or code to follow. They are required to do some testing like the use of loop testers which you can't even purchase in this country even though companies like Fluke offer them. Loop testing is required on a new home and every ten years there after.I agree with this statement (with some exceptions). The problem is that because of this (or other reason?) the level of maintenance is less than in Europe.
I believe in Europe they don't have anything like NEC or code to follow. They are required to do some testing like the use of loop testers which you can't even purchase in this country even though companies like Fluke offer them. Loop testing is required on a new home and every ten years there after.
For example, the maximum voltage drop on long line is 2% according to NEC,
What I mean is that here, they follow NEC and don't look back. Here, you test a GFCI by pressing the Test Button, if it trips, it's good. Similiar RCD(?) in England must pass a trip time and current trip test using the fuctions on the loop tester I mentioned above.There are many obligated standards by different standard organizations like IEC and EN. On top of this, there are the directives. Most of this standards are more comprehensive and more demanding than NEC.
What I said is that NEC is more conservative and the result is that the investment in infrastructure is higher, which leads to less issues. For example, the maximum voltage drop on long line is 2% according to NEC, 3% according to BS (British Standard) and 5% in Europe. This means the cross section is 2.5 larger according to NEC.
This is exactly what I am saying. Next time when you see over heating, use the Dranetz to measure harmonics. You may be surprised with the correlation. I know more than one thermographers that when they measure high temperature they recommend to perform harmonica analysis..
And I will say again, most of the information out there about the problems caused by harmonics, is written by those who have a vested economic interest in solving those problems.
I cant speak for all of Europe, but can for what it used to be like in the UK.I believe in Europe they don't have anything like NEC or code to follow. They are required to do some testing like the use of loop testers which you can't even purchase in this country even though companies like Fluke offer them. Loop testing is required on a new home and every ten years there after.
it is only common sense as that is how we make a living, little more testing little more cash. GOOD BUSINESS
That sounds more like dishonest business, therefore it is eventually bad for everyone.
Actually it is called good business, the customer has a possible issue as a PROFESSIONAL electrician it is MY JOB to determine what the issue is, this involves testing of a variety of types and a harmonic survey may be ONE OF the methods a professional utilizes to identify and solve problems. AS THAT IS MY JOB.
So thanks for the compliment.
So there you go Brian, you have been over-reaching. :grin:A 'professional' electrician is not qualified to perform a harmonic study.
I saw a Ripley's episode where some guy made his own false teeth using concrete and stuff. Ground his own teeth, drilled into his jaw, etc. Ouch!I also stay away from self-thaught brain surgeons.
I think you are ill informed, many electricians can actually teach you (yes even you) if you listen.A 'professional' electrician is not qualified to perform a harmonic study.
I also stay away from self-thaught brain surgeons.