Type A and AC earth leakage

[Alfred M]

I understand the difference between an earth leakage unit which is used an isolator and has no over load protection and an earth leakage with overload protection.

When referring to the type A and type AC, it is with refence to the type of equipment it protects.

The reason I am bought up this topic, it could explain why some people complain about certain earth leakage units "nuisance" tripping for no reason.

If a type AC is install it might not trip when connected to electronic devices, however if for example you are using a type A earth leakage unit, the electronic devices could be tripping the units due to a fault or incorrect wiring.

I get you no problem i do understand your post and your intentions just thought i put some earth leakage history in my post the older earth leakages was monitoring live conducter to earth where the new technology rcd checks the balance between live and neutral much safer that the old type earth leakage. To me i always believed that nuisance tripping is actually a fault condition. It is just easy if you experience nuisance tripping to remove circuits from the rcd. Rather investigate nuisance tripping than changing to delayed rcd types. To me all circuits should have rcd protection remember the reason for installing a rcd is all about safety to people and animals. Poor db design is sometimes the reason for nuisance tripping. Do split neutral and install 2 or 3 rcd's in db boards if necessary. When using RCBO's like UK there is no way around nuisance tripping. The regs stipulate that certain circuits in South Africa may be excluded from rcd protection it doesn't mean it is the safest option.