AFDDs are a massive fraud

[Cookie]

Derailed another thread with AFDDs, so I am starting this one. I will simply say that UK RCDs and MCBs provide arc fault protection as is. UL not only knows that, but extensively researched UK power systems in an effort to emulate the very same concept 40 years. One the simply fact (growing concern) that the US National Electrical Code does not prohibit a maximum earth fault loop impedance.

 

[The Ghost]

a) I'm wondering if things have moved over in the "sticks" with good mobile phone coverage .
b) Or if Truckers still use CBs and big-dirty "linears-Boots-Power/Amps"
c) (We have a post elsewhere Higher power PMR radios upsetting RCDs.. close UP -Inv-cube-law (volume-signal has to fill))

He speaks in parables

 

[static zap]

He speaks in parables

Old Chinese proverb ,
Man with hole in pocket ,
He loose all his change ..! (WRONG)
(No insult is intended from correct answer)

 

[Sisyphus]

For that matter arcing gives out radio frequencies, just get a "listener" that picks them up and alarm sounds and remote switch??? something like that anyway. Beleive it or not @Sisyphus I looked at those videos and while I told @Cookie not to tell us there are bad men out there and AFDD are bad I didn't tell you so you get a pass on that one.
I can only conclude with a strategy. If you face a giant you don't go for its head you go for its feet. What is the feet of corporation I hear you ask...why it is the consumer. Therefore it would behove us to inform the consumer that AFDD have some questions that need answering before we feel confident enough to recommend them. If all the electricians did this and left the decision up to the consumer we could write on the certificate the client declined the AFDD offered. As well we could ensure that we price them unattractively, say £200 an AFDD. Given that we would need to fit one on every circuit that would add several hundred pounds to the cost of a consumer power distribution unit. As I retire next year (God willing!) I have little to lose in informing consumer associations as well. I reckon the above would effectively throw a spanner in the works, no?

Yes it's a prevalent strategy here Vortigern...slow a process as it may be....

Our consumer protective agencies being no help at all.....

Anyway according to the videos @Sisyphus posted arcing is not the problem, glowing connections are. It would seem arcing is not the problem at all. The guys seem to be credible witnesses and amply qualified although I have not researched and confirmed that.

Absolutely.

Arcing is the end result of heated connections , which are incendiary

a daily affair for most sparks here.....

Which brings us to simple 'point of use' thermal dynamics, something your ring circuits addressed how long ago???


But i digress, the widget exists....looks like a big wirenut....OR can be incorporated into electrical outlets

The patent war over it is HUGE, as well as international, the AFDD manufactures want to either own it, or silence it

~S~

 

[DPG]

What widget exists? What are you referring to here? Your posts are like riddles sometimes.

And if arcing is the result of heated connections, then surely a device which detects this arcing is a good thing? Note, I am not necessarily saying that AFDDs do this successfully, that is a different argument.

 

[The Ghost]

He looses all his change ..! (RIGHT!)

 

[The Ghost]

arcing is the result of heated connections

I think it's vice versa

 

[Deleted account]

This is my first post and last on this thread.

Every time I look to see what’s new in the posts. This one is top.

I’ve read it and it’s repetitive and boring.

Enjoy.

 

[DPG]

I think it's vice versa

I was referring to his post though where he states this.

 

[PEG]

Crikey....what a ramble...nobody mention vehicle air-bags...

 

[static zap]

Yes it's a prevalent strategy here Vortigern...slow a process as it may be....



a daily affair for most sparks here.....

The size of those terminals !
(Have torque "wrenches" been specified yet ?

 

[Sisyphus]

What widget exists? What are you referring to here? Your posts are like riddles sometimes.

And if arcing is the result of heated connections, then surely a device which detects this arcing is a good thing? Note, I am not necessarily saying that AFDDs do this successfully, that is a different argument.

try this DPG>

~S~

 

[Sisyphus]

Crikey....what a ramble...nobody mention vehicle air-bags...

~s~

 

[PEG]

~s~

It appears you have played a trump card ...

 

[Sisyphus]

It appears you have played a trump card ...

Please , let's not allow this issue into the political rathole of cognitive dissonance PEG. We really are serious in our quest to give a 'heads up' herre

~S~

 

[Cookie]

The size of those terminals !
(Have torque "wrenches" been specified yet ?

Was just required in the 2017 NEC

110.14 (D)

(D) Installation. Where a tightening torque is indicated as a
numeric value on equipment or in installation instructions
provided by the manufacturer, a calibrated torque tool shall be
used to achieve the indicated torque value, unless the equipment
manufacturer has provided installation instructions for
an alternative method of achieving the required torque.

And if arcing is the result of heated connections, then surely a device which detects this arcing is a good thing? Note, I am not necessarily saying that AFDDs do this successfully, that is a different argument.

Assuming it doesn't catch fire first... At the end stage the tempratures are already obscene.