DISCONNECTING TIME FOR BS1361 (80A)

[NEBITOMI]

HELLO
Just i would like to know if the BS 1361 80A fuse overloading ,how long will take to disconnect for example 90AMPS!
i have to install 14.4 kw electric boiler in the flat!and that would take 60A and 20A would remain for the rest of the house!
The main meter tails 16mm ,50cm long from the main panel (Ryefieild board )!Cooker and hob also in the flat
Please share you opinion!
thx

 

[suffolkspark]

14.4kw one in a flat???!!! How big is the flat?? Last one I fitted was 11kw and that was in a 3bed house

 

[NEBITOMI]

14.4kw one in a flat???!!! How big is the flat??

3 bedroom!not big flat!

 

[suffolkspark]

3 bedroom!not big flat!

Have you calculated how many BTU'S are actually required?

 

[NEBITOMI]

Have you calculated how many BTU'S are actually required?

what is that btu??

 

[suffolkspark]

what is that btu??

British thermal unit.

 

[NEBITOMI]

British thermal unit.

can you plese tell me how to check that?
[automerge]1596647995[/automerge]

British thermal unit.

40968 :BTU

 

[suffolkspark]

You need to work out how many btus are required to heat the flat, there are online calculators, and then size your boiler accordingly.

 

[NEBITOMI]

You need to work out how many btus are required to heat the flat, there are online calculators, and then size your boiler accordingly.

ok! but my original post not been answered yet!

 

[suffolkspark]

ok! but my original post not been answered yet!

Well no because it doesnt sound like you even know what your doing!

 

[Lucien Nunes]

You need to look at some fuse curves. You will see that the time is not defined for an 80A fuse at 90A, with good reason. No OCPD should ever be operated in this region by design, so you can't just slap on any amount of load on the basis that if the fuse doesn't blow, all is well.