3036 with RCD

[kant]

Can any one tell me if i need to put rcd on 3036 cu if I am just changing socket faces cause i was told i did?

 

[Guest123]

Is it me or are the L&N of the 6mm T&E terminated into seperate fuses????

 

[nickblake]

If your supply fuse is a BS1361 and your installation is domestic single phase then you can use the s/c capacity of that device (16.5kA).
not that its important for this post but i thought a 1361 was 33Ka

1361 type 2 is 33ka 1361 type 1 is 16.5 ka

looking at the pics though the discolouration of the fuse carrier is due to the fuse blowing and not to overload , meter tails look like 16 mm ,and if im not mistaken the fuse carrier is a 3036 rewireable , if i am mistaken and i could be then the fuse may will be a BS88 or a 1361 , think ive mentioned them all , but id be suprised if the fuse was any higher than a 60 amp , have a close look at the fuse carrier it may well give you the fuse rating (capacity) on it

 

[nickblake]

lenny looking at it somethings not right you can see a black identified with blue tape and a neutral on the L/H of the neutral bar , but why has the black been marked with brown tape is it 2 blacks im confused ????? 3 blacks 1 red !!

 

[Guest123]

Sid.....what's occuring there then???

 

[TPES]

It does look odd at first glance.

Looking into it shows the shower circuit is wired via 6.0mm 4 core stranded flex, not sure what the cable BS number is, has a thick grey outer insulation, copper strands.

This is why they are all black but have been taped up to identify conductors.

No markings on the fuse carrier as to what size or type. im guessing BS88 because of its shape/length

 

[nickblake]

now it makes sense , im thinking BS 88 too

 

[TPES]

I know its each to there own, but what codes if any would you give just from what you can see on photos and from what ive said, if doing a PIR.

 

[TPES]

anyone else confirm 4ka is the rating for 3036 fuses?
if not and its 1ka for the 5a lighting for example does it not matter that my PFC is greater than this cappacity?

 

[IQ Electrical]

anyone else confirm 4ka is the rating for 3036 fuses?
if not and its 1ka for the 5a lighting for example does it not matter that my PFC is greater than this cappacity?

Did you not see post 15?
I don't just guess!

 

[TPES]

Yep seen that, heard you loud and clear..

But i dont think i have a 1361 main fuse..

and i always see this ka rating 1 to 4 on 3036 fuses but which is it... 1,2,3 or 4?

 

[IQ Electrical]

I use these figures, I think from a BS7671 appendix

Fuses Short circuit capacity of BS3036

5A - 1kA
15 - 30 2kA

 

[Des 56]

Any fuse below 30 amp will be rated at either 1 or 2 KA S1A or S2A
The 4KA will be 30 up to 100 amp S4A


S1A can also be up to 60 amp
S2A up to 100 amp

 

[jibjob]

First photo shows main earth attached to incomer with bonding clamp, reckon that's a code 2 on PIR

 

[IQ Electrical]

First photo shows main earth attached to incomer with bonding clamp, reckon that's a code 2 on PIR

That's the DNO cable and connection, it isn't covered by BS7671

 

[jibjob]

I thought BS7671 covered all things electrical. It maybe their responsibility to put it right but surely the person carrying out the PIR has a responsibilty to point it out.

 

[IQ Electrical]

If the Ze reading was unacceptable then you'd rightly list it as a defect.

 

[pushrod]

Yep seen that, heard you loud and clear..

But i dont think i have a 1361 main fuse..

and i always see this ka rating 1 to 4 on 3036 fuses but which is it... 1,2,3 or 4?

Have a careful look on the fuse holder and you might just be lucky and see S1A, or S2A on it. 1 means a breaking capacity of 1kA and 2 is for a BC of 2kA. unfortunately a lot of them have nothing but dead spiders in them!

If you have a type 1 bs1361 main fuse you can use its BC of 16.5kA (type 2 is 33kA) , but if it is a BS 88-6 their BC is also 16.5kA

If you come across the old bs 3871 circuit breakers it is the "M" number on the side that tells you the BC eg M3 is a BC of 3kA.


edit ; should have said that you can only rely on the upstram fuse if the CU is to BS 5486-13 or BSEN60439-3 and with your missing cover if it was to the BS standard it won't be now.

However in this http://www.esc.org.uk/pdfs/business-and-community/SwitchedOn-Issue-17.pdf from the ESC (page18?) it says that the BC of 3036s in domestic use was the 2kA versions . Which would mean with your pfc you are ok

 

[Dolph Lundgren]

Providing earth loop complies with 41B1 in BS 7671 then you don't need an RCCD.

 

[IQ Electrical]

Providing earth loop complies with 41B1 in BS 7671 then you don't need an RCCD.

He's carrying out a PIR so if cables are buried in Walls at depths of less than 50mm etc etc then of course there should be(and is) 30mA rcd protection!

 

[Dolph Lundgren]

Do cables buried at less than 50mm on a PIR mean an RCD should be present. Not sure it does. Otherwise 90 % of DBs in UK would need replacing. Sockets should always have an RCD but lack of them on a PIR does not constitute a code 1 unless external sockets lack RCD protection.