About RCD Handbook

[yigitsdr]

'Hello everyone,

I want an ask question. About The RCD Handbook. There are some statement.


There are two marked items in the picture

It say there "Class 1"..... and "Class 2". Are these about IEC 61140 Class I and Class II Basic Insulation and Earth Connection or Nec Class 1 and Class 2 Power Supplies classifying? Thank you so much for responses.

.


And this is hager's brochure. There is a statement too, about "Class 1". Is this about IEC 61140's "Class I" or NEC's "Class 1"?

Thanks for your responses.

 

[telectrix]

class 1 are itemsthat need earthing. i.e. conductive exposed parts. class 2 don't require earthing. class 2 items are marked with a square within a square symbol.

 

[yigitsdr]

class 1 are itemsthat need earthing. i.e. conductive exposed parts. class 2 don't require earthing. class 2 items are marked with a square within a square symbol.

I want to learn is these statemens about IEC 61140 classifying?
[automerge]1581191374[/automerge]
There are also Class 1 and Class 2 classifications of nec related to the output voltage of power supplies.
[automerge]1581191480[/automerge]
IEC 61140 Class I and Class II or
NEC Class 1 and Class 2
[automerge]1581191519[/automerge]
I don't sure these.

 

[Lucien Nunes]

I think you are correct. These applications refer to IEC 61140 Class I and Class II. The documents should use Roman numerals (I, II) not Arabic (1, 2) but in the UK it is quite common (although incorrect) to use Arabic. We don't recognise the NEC circuit classes so there is little chance of confusion.

 

[yigitsdr]

Thank you so much for all responses,

best regard.