BS3036 breaking capacity and PFC..

[HappyHippyDad]

Afternoon....

I have just completed an EICR and am unsure if the Wylex BS3036 fuses require a code due to their breaking capacity related to the PFC.

Firstly I would like to identify if they are S1A, S2A or S4A as that would solve the problem of the PFC being 1.35kA, however I dont think its going to be possible to identify them as there are no markings indicating this information.

So I will put 1kA for breaking capacity which is < PFC!

Guidance note 3 says that you can take the s/c capacity of the fuses to be 16KA when:

the current ratings of the devices don't exceed 50A
The d/b is a 5486-13 or better
it is supplied through a type 2 BS1361 fuse rated at no more than 100A

But if the above is acceptable then I cant quite see the point in having a breaking capacity rating on fuse/MCB if we are going to ignore it?

Do most of you accept GN3 and would not be concerned? Or would you want to change for MCB's with a higher breaking capacity?

I have to admit I do not have a copy of GN3 so have just found the above paragraph on the internet, if I had the copy in my hand and could read it thoroughly I would find it easier to make a decision.

 

[Farmelectrics]

google it

 

[trev]

https://www.google.co.uk/url?sa=t&r...=KV-PmyZ7YY8ifdTHlVZ-pw&bvm=bv.80642063,d.ZGU

 

[Plonker 3]

You need to put N/V (not verified) for the Ka rating of the OCPD if its not present. Then code it accordingly on your report.

 

[Farmelectrics]

like it trev

 

[Guest55]

are you ready to carry out EICR's when you still have to come on the forum every day to get help with all your jobs ?

sorry but inspections require a level of experience you do not possess.

 

[Farmelectrics]

your ruthless biff lol

 

[Guest55]

that was as discreet as i could put it , and it needed to be said for the safety & well being of all concerned

 

[Plonker 3]

To be fair to hhd he has researched for a answer before asking unlike some on here. He has also shown he is capable of thinking outside the box a little bit, I am sure we have all had to look up these sort of things before.

Has he got the experience and knowledge to carry out a EICR I dont know bit at least he seems to be attempting to do it properly rather than just guessing his way through it.

 

[Guest55]

To be fair to hhd he has researched for a answer before asking unlike some on here. He has also shown he is capable of thinking outside the box a little bit, I am sure we have all had to look up these sort of things before.

Has he got the experience and knowledge to carry out a EICR I dont know bit at least he seems to be attempting to do it properly rather than just guessing his way through it.

well thats just fine & dandy , but the customer could have been handed a report recommending replacement of his rewirables for no other reason than theres no PSC rating on the side of the fuse carrier.

and in my mind 3036's will deal with 3kA fault current all day long...........

 

[telectrix]

see your comment, dilb, and agree. HHD has shown his dedication to the trade and, although having come in through the Electrical Trainee route, is keen to get it right and deserves all the help we can give him, respect.

 

[ImpededLoop]

Guidance note 3 says that you can take the s/c capacity of the fuses to be 16KA when:

the current ratings of the devices don't exceed 50A
The d/b is a 5486-13 or better
it is supplied through a type 2 BS1361 fuse rated at no more than 100A

But if the above is acceptable then I cant quite see the point in having a breaking capacity rating on fuse/MCB if we are going to ignore it?

Do most of you accept GN3 and would not be concerned? Or would you want to change for MCB's with a higher breaking capacity?

I have to admit I do not have a copy of GN3 so have just found the above paragraph on the internet, if I had the copy in my hand and could read it thoroughly I would find it easier to make a decision.

As you say, if the upstream BS1361 has a high enough breaking capacity, then you don't need to worry.

Always worth noting it on the report though.

 

[HappyHippyDad]

https://www.google.co.uk/url?sa=t&r...=KV-PmyZ7YY8ifdTHlVZ-pw&bvm=bv.80642063,d.ZGU

Cheers Trev,
But that still shows the breaking capacity could be anywhere from 1-4kA which makes quite a difference with a PFC of 1.35kA.

You need to put N/V (not verified) for the Ka rating of the OCPD if its not present. Then code it accordingly on your report.

It's a difficult one to code Dillb.. I think it's potentially dangerous as PFC > breaking capacity but GN3 states otherwise.

are you ready to carry out EICR's when you still have to come on the forum every day to get help with all your jobs ?

sorry but inspections require a level of experience you do not possess.

Yes.

1.1 threads started p/week..... daily? I do get picky about inaccurate statistics!!!!

But thanks for the input

 

[HappyHippyDad]

well thats just fine & dandy , but the customer could have been handed a report recommending replacement of his rewirables for no other reason than theres no PSC rating on the side of the fuse carrier.

and in my mind 3036's will deal with 3kA fault current all day long...........

Thats a fair point..

Which page is that on Biff? :smile5:

edit ..................

sorry, that was a bit cheeky! Couldn't resist!

 

[Octopus]

To be fair to hhd he has researched for a answer before asking unlike some on here. He has also shown he is capable of thinking outside the box a little bit, I am sure we have all had to look up these sort of things before.

Has he got the experience and knowledge to carry out a EICR I dont know bit at least he seems to be attempting to do it properly rather than just guessing his way through it.

HHD knows how to get the best out of the forum by offering up problems, his ideas of solutions, answering questions and giving feedback.

He could teach the majority of new posters a thing or 2 about forum etiquette!