Type AC or type A RCD?

[Zdb]

What's everyone using for the following?

Domestic lighting
Ring final
Kitchen ring final

Just read an article that says type A should be used in most scenarios and that type AC are banned in some countries?

Type A or F RCDs? 18th Edition B57671 - https://www.voltimum.co.uk/articles/type-or-f-rcds-18th-edition-b57671

 

[Risteard]

AC won't provide sufficient protection in many scenarios. I've been pushing wholesalers to supply Type A over AC for years.

 

[Wilko]

Hi - I'm using type A rcbo but they do cost double. Happy to be proven wrong, but I don't think there's any twin RCD boards that are fitted with type A. (Edit : Bold statement - just off to check Hager ).

 

[Gavin John Hyde]

isnt the issue to do with the difference between AC and DC currents in fault conditions? in particular so much of today's electrical stuff in use is AC until the transformer then DC. examples, tv's, games consoles, laptops, computers etc..

 

[Risteard]

isnt the issue to do with the difference between AC and DC currents in fault conditions? in particular so much of today's electrical stuff in use is AC until the transformer then DC. examples, tv's, games consoles, laptops, computers etc..

Type A protects against pulsating DC as well as AC. As you point out this is increasingly important all the time now.

 

[Deleted member 26818]

So type B it is then.