immersion double pole

[devil109]

hi all,
should there be a 21amp double pole switch or a 13amp to a immersion heater
thanks

 

[RF Lighting]

What size is the immersion heater?

 

[ColJack]

depends on the circuit and the element.
as most elements are 3KW that's 12.5A @240V.. so a FCU will do, but if its only a 20A or 16A circuit ( dedicated radial ) then a 20A DP switch will do..

 

[Chri5]

The element is a standard 3kw, so 13a will do. I spec Mk and they rate DP as 20a.

 

[devil109]

it has its own circuit with a 15amp wire breaker? two 11" elements,1.5mm or 2.5mm does this depend on the fcu?
thanks

 

[ColJack]

each element will require it's own FCU as they are both 3KW.. length doesn't matter ..

is this an existing immersion or a new installation?

 

[devil109]

hi coljak the 2.5 t&E from the cu is old,the immersions are new,and i want to put new fcu or dp switch but need advice on which one also flex size from fcu or dp to immersion

 

[ColJack]

20A DP switch and 1.5 heat resistant flex should do you as you have 15A protection on the cables..

 

[devil109]

coljak!i posted this one as i received your last post! so i apologise for that, in regards to the question it wasnt answered in two posts,so ffs dont be a smart one! straight foward question 13amp fcu or 20amp dp switch 1.5mm flex or 2.5mm flex i am not a electrician so i dont know hence the questions i wanted to be certain,isnt what these forums are for? do reply otherwise!

 

[ColJack]

I posted teh reply full 10 mins before you posted the same question again.. and youd already been told on here that either a FCU or a DP switch would do..
as for cable rating..
you know that you have a 15A fuse, and B&Q have their flex marked as rated in amps.. so it's not hard to pick the one that's rated higer than 15A is it?

 

[ban-all-sheds]

I'm starting to see more and more similarities between devil109 and lammiegb....

 

[mikhailfaradayski]

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