Hi,

First question - Does T41.1 (0.8s for TN) exclude disconnection time for RLV systems (411.8.3) which states "The EFLI at every point of utilisation shall be such that the disconnection time does not exceed 5s", so satisfy T41.6 or 411.5.3 by using an RCBO or RCD

Second question - To risk assess a high EFLI on a RLV socket circuit would you take into account:

Risk of fire due to L-E or L-N fault

L-E fault

1. Class II equipment, no possibility for L-E short within equipment
2. Cabling PAT tested etc.
3. Fire detection and suppression systems in place

L-N fault

1. Zs not related to L-N fault provided that R1 value is acceptable
2. If formula for (K^2 * S^2)/(I^2) is satisfied

Any other points to consider whether for or against accepting a circuit exceeding maximum Zs?