Fire barriers when cable sizing

L

Lc1

-

Reaction score

22

• Nov 17, 2018

• #1

Hi
I am hearing different things, some people have said no and some yes. Do rubber and foam fire stops through walls count as thermal insulation when cable sizing?

Thanks

 

buzzlightyear

-

Esteemed

Arms

Reaction score

7,752

• Nov 17, 2018

• #2

Try cement .

 

buzzlightyear

-

Esteemed

Arms

Reaction score

7,752

• Nov 17, 2018

• #3

The idea is to stop fire from speading to another part of a building .has long has it is flame proof .

 

OP

L

Lc1

-

Reaction score

22

• Nov 17, 2018

• #4

Thanks for this. If these were to be treated as thermal insulation the cable would need to be substantially larger, so as they are to stop the spread of a fire they do not require to be treated as thermal insulation when sizing a cable?

Thanks

 

telectrix

-

Mentor

Esteemed

Arms

Reaction score

67,272

• Nov 17, 2018

• #5

i would not think so, unless the cable is on it's limit, load wise.then the fire protection effect on thermal effects might be a consideration.

 

OP

L

Lc1

-

Reaction score

22

• Nov 17, 2018

• #6

Thanks I am hearing different things. But the majority of people I have spoken to say that tubber and foam fire stops are NOT treated as thermal insulation when cable sizing

Thanks

 

Midwest

-

Esteemed

Arms

Reaction score

10,616

• Nov 17, 2018

• #7

Isn't a figure of 500mm mentioned in the regs, before insulation effects ccc?

 

T

Toneyz

• Nov 17, 2018

• #8

Midwest said:

Isn't a figure of 500mm mentioned in the regs, before insulation effects ccc?

Click to expand...

Reg.523.9(page132)BYB table52.2.