Can I run 3 doubles socked from 16 am rcb

[JohnW2]

And what's a 16 am?

Probably a friend of a "1 gig" something

 

[plugwash]

What else could it possibly be. I don't think anyone is going to find a 16A RCD, in a domestic CU or anywhere else.

A quick google suggests 16A standalone RCDs (not RCBOs) in din-rail format do exist.

 

[Risteard]

There are at least two things to think about here.

Firstly, what exactly do you mean by "RCB"? that's not a commonly used acronym! To comply with current standards, your socket circuit needs both overcurrent protection and RCD protection.

* A "MCB" provides overcurrent protection.
* A "RCD" or "RCCB" provides RCD protection
* A "RCBO" provides both.

You need to understand what the devices you are looking at actually do and how they are connected. Post photos and ask if you are unsure.

Secondly you need to think about what the sockets will be used for. BS7671 does not explicitly limit the number of sockets on a circuit, but you should not design installations you anticipate will be overloaded.

RCD or RCCB is technically incorrect. An RCCB is a type of RCD. An RCBO is also a type of RCD.

 

[securespark]

I have seen many a circuit in my time just "protected" by an RCD and nothing else.

It's got an Amp rating on it so it must be right, hey?

 

[securespark]

A quick google suggests 16A standalone RCDs (not RCBOs) in din-rail format do exist.

Denmans were selling them decades ago. Don't know if they still do.
All sorts of ratings.

The ones I remember were 16, 20, 25, 40, 63, 80 and 100.

 

[JohnW2]

A quick google suggests 16A standalone RCDs (not RCBOs) in din-rail format do exist.

Interesting.

What does the 16A relate to? If the IΔn, I find it hard to see why anyone would want that, and if the 'rating' (maximum current-carrying capacity) I would imagine that it would be quite hard to design one with such a low capability even if one wanted to

Whatever, I would personally be happy to assume that the probability of such an animal existing in a domestic CU would be so low as to not really warrant much consdieration!

 

[ebee]

As in In I reckon John rather than I delta n, it does confuse some people who calls themselves Electricians but that is another story for another day methinks

PS - an Electrician once asked why we Electricians use so many Greek Symbols and another Electrician replied "Then we can charge more when we do our Invoices!"

 

[JohnW2]

As in In I reckon John rather than I delta n, it does confuse some people who calls themselves Electricians but that is another story for another day methinks

I'm not at all sure that an RCD has an "In", does it - and, as I said, if (as I am assume) it relates to the maxi,um current it is 'rated' to be able to carry, I doubt that it would be very easy to design one that couldn't cope with more than 16A (and why would one try to make one, anyway?).

 

[plugwash]

I would imagine that it would be quite hard to design one with such a low capability even if one wanted to

Not really, just a matter of making things smaller/thinner.

(and why would one try to make one, anyway?).

In the UK caravan parks, caravans, marinas and maybe some industrial scenarios spring to mind.

And remember, din-rail mount devices are used across much of the world (basically everywhere except america), even if the UK market for such a thing would be relatively small doesn't mean the global market is.