Mem EATON 100 AMP 30mA DOUBLE POLE RCCB RCD A100HE

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is the 100a 30ma RCD a main isolator for the whole of the fuse bord or is it just protecting part in a split-load arrangment. The older RCD does seem to be affected by spikes, so likely a SPD would stop it, but a consumer unit is a type tested distribution unit, and to retain the type testing only items recommended by the manufacturer can be used, even if they seem to fit.

The revised RCD guidance in 531.3.3 is precise. The appropriate Type of RCD must be selected, based on the characteristics of the residual current and the equipment that is likely to be connected to the RCD protected circuit".

Justifying the use of Type F RCDs

In your own words - It is not appropriate electrotechnical language, its generic and anyone following that as a lead will not carry out an appropriate assessment. The MR 30 is one of their most popular products. The Memshield 2 MR30 RCBO Pod is a residual current operated circuit breaker that can be added to any standard 1 pole or 1 pole + N Eaton MCB. It is a Miniature Circuit Breaker with the function of a Residual Current Circuit Breaker and is fully compliant with IEC 61009.

UK electricians can still make informed technical decisions. This is explained in Chapter 12, 13 and Chapter 30. The Electrician is responsible, not the Technical committee, to make the decision on which device is appropriate for the installation. The revised RCD guidance in 531.3.3 is precise. The appropriate Type of RCD must be selected, based on the characteristics of the residual current and the equipment that is likely to be connected to the RCD protected circuit. and the RCD should be selected based on the characteristics of the connected loads. Type F RCDs are not designed to detect smooth dc residual currents. They will still trip within safe limits with < 10 mA smooth dc superimposed on a 50Hz pulsed residual current.

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Add to that the changes that have been imposed on the local supply networks i.e. green energy they have caused a situation that is going to result in frequent surges and transient voltages being produced all the time hence we now need to install surge protection or the likelihood is that if a surge occurs at a property and there is no surge protection then the blame will be passed on to the little man again.

Designing to pass an immunity test at 200V/m from 10kHz to 6GHz (the Def Stan) is far more demanding that one at 3V/m (CE marking for type B, domestic situations) or even 10 V/m (CE marking industrial), there is a reason that all the geen boxes are milled from solid metal and have EMC gaskets everywhere. This handy RC Unit (residual current unit) has been designed for installing on to any standard 1P or 1P+N Eaton MCB with a 10kA, 15kA & 6kA rating to create an RCBO. The MR30 RC POD unit is ideal for standard applications with a 230-240 VAC voltage rating and 30 mA breaking capacity and is field fitable. Fully compliant with Standard 61009, this capable MR30 POD is utilised in numerous industrial and commercial applications due to its versatility and ease of assembly. I feel like BIG BUSINESS is trying to pull a fast one with the new 18th edition regs, they are trying to shift responsibility for their sometimes obvious poor standards onto the little man at the bottom of the food chain. It's pretty obvious that insurance companies are trying to get out of paying for damage caused by products that quite frankly should not be in peoples homes in the first place.For single phase inverters used in motor speed control, the characteristics of the equipment will determine if Type A, F or B is required, to meet Regulation 531.3.3 For 3 phase inverters which do not incorporate isolating transformers, Type B RCDs must be used to meet the requirements of Regulation 531.3.3 For additional information. The fault current (If) contains mixed frequency components between 10Hz (minimum motor frequency) and 1kHz (maximum inverter switching frequency) ***.