dangers on type c for domestic help

[scott g]

im doing inspection on flats and ive came across
all 61900 type c rcbo ive recommended changing to type b
due to type c for inductive loads . could cause overload
what is the general opinon on type c on domestic?

 

[Mr Mark Sparks]

most rcbos are attached to type c mcb this is because the rcbo will provide the protection over the mcb

 

[Guest123]

Hey Scott.

I'm a little confused by your post mate, a C type merely copes better with a high start-up current than a B type, and as it's an RCBO the breaker type isn't really an issue.

I believe wylex and crabtree only make their RCBO's in C type.

Can you elaborate on your "could cause overload" statement please.

Cheers

 

[Spudnik]

I take it you mean 61009?

As long as your Zs is within the lower limits of a type C then i dont see a problem at all.

In fact, some manufacturers dont even make B type RCBO's.

 

[johnnyb]

We only use C type when we are dealing with machinery or motors, due to the higher start up current being drawn for that split second, not heard of em in domestic situation unless they have made a boo boo.

 

[DanBrown]

We only use C type when we are dealing with machinery or motors, due to the higher start up current being drawn for that split second, not heard of em in domestic situation unless they have made a boo boo.

Our house has just been rewired by southern electric, with all type c rcbo's and nic'ed... Ther's nothing wrong with type c breakers so-long as the zs is still met..

 

[johnnyb]

I wonder why they do that Dan, Agree with the zs part, but i would bet that the majority of domestic premises are type b, don,t you think.

 

[DanBrown]

I wonder why they do that Dan, Agree with the zs part, but i would bet that the majority of domestic premises are type b, don,t you think.

I also agree with you that the majority of domestic are on type b breakers, but really does it matter type b or c?, i don't really think it matters, and as far as a danger - well, i dont think so ...

 

[Mr Mark Sparks]

i think for all of us who understand that type c have half the max permitted eli of a type b it doesnt matter, but not everyone realises this and that is where the risk is,( know your max eli and all is well)

 

[johnnyb]

Never mentioned it was a danger Dan.

 

[Spudnik]

Chaps,

The MAJORITY of manufacturers do not even make B type RCBO's as there is no real reason to.

The C type covers all installations, provided that the EFLI is within the maximum permitted. (or 80% corrected)

 

[johnnyb]

Sorry boys i was just on about normal type breakers, not rcbo,s.

 

[Spudnik]

Sorry boys i was just on about normal type breakers, not rcbo,s.

Keep up

 

[Jono Pashley]

Wylex do make type b rcbo's they are just rare as rocking horse poo. Untitled Document

 

[maddfridge]

We only use C type when we are dealing with machinery or motors, due to the higher start up current being drawn for that split second, not heard of em in domestic situation unless they have made a boo boo.

hi there

type c are used a lot in some lighting appilcations such as display lighting, air con etc but they are also used to give a bit more before all the lovely 3 kw fan heaters are connected in the office when the heating breaksdown lol

cheers