Types of rcd

[andy63]

May be of interest to some.. I first read about the various types of rcd that were available a few years ago after finding out that the standard AC type may not in fact be suitable in a modern home with the increasing trend towards electronic circuitry in many household appliances and circuitry..
The issue can only become bigger and begs the question posed in the video I was watching..
Just thought I'd share in case anyone else is interested..



Hope the link works.. if not there will be a few similar videos on you tube
Andy

 

[irnbru]

Very interesting but I know very little about the ins and outs of electricity.

 

[Raul]

To have DC leakage, you need to have a dc source. Most DC sources are tightly regulated above 50vdc. A grid inverter goes trough rigours tests before it is accredited. The US UL don’t even consider a DC system without ark fault device, hence American solar controllers and inverters have that built in.
I would like UK to take same approach and enforce ark fault in DC systems.

 

[andy63]

To have DC leakage, you need to have a dc source. Most DC sources are tightly regulated above 50vdc. A grid inverter goes trough rigours tests before it is accredited. The US UL don’t even consider a DC system without ark fault device, hence American solar controllers and inverters have that built in.
I would like UK to take same approach and enforce ark fault in DC systems.

I only know what I've read but apparently it doesn't take a lot to prevent what we would consider a normally fitted domestic rcd or rcbo not to operate as expected due to a small dc component... washing machine with a dc drive motor... USB sockets in a system.. led lighting...
Contribute I believe..
So in a domestic system there appears to be an ever increasing risk of the generally accepted earth leakage protection device having the potential of not functioning..
Ill most probably change my board breakers to type A rcbo's
Andy..