DISTRIBUTOR CANNOT BE TRUSTED...

jcm:
33  reply , where they go from the above post.?.

Anyhow here is a young  American that knows what he is talking about in the pitfalls of connecting the earth and neutral together at the consumer end..

Thanks for the link, I have seen some of his other videos. I have been doing my homework on diverted neutrals in the background and have also ruled out a N-E link preferring a TT earthing system to avoid a proportion of the neutral currents returning from not only my own installation but other consumers within the same building via the bonded extraneous conductors and the EMI / EMC effects associated with this (although the extraneous conductors could have means of isolation installed, plastic piping etc.). See Section 444.4.3 and 444.4.4 in the regs for more information on mitigating EMI / EMC effects. I have opted for 2P RCBOs which should disconnect when there is a sufficient difference between L-N including that from a N-E fault (at which point a proportion of an external neutral diversion current from other consumers in the building could flow back through the neutral in one of my circuits).


Also under 444.4.3.1 - "Regulation 8(4) of the Electricity Safety, Quality and Continuity Regulations (ESQCR) prohibits the use of PEN conductors in consumers’ installations.” which enforces the costumer not being permitted to add a N-E bond (i.e neutral and earth are separated by the distributor prior to the costumer connection) which would apply to my scenario (at least for the UK).


Please can you reply to the original post to avoid parallel posts on the same topic :)


Thanks, Chris

jcm:
33  reply , where they go from the above post.?.

Anyhow here is a young  American that knows what he is talking about in the pitfalls of connecting the earth and neutral together at the consumer end..

Thanks for the link, I have seen some of his other videos. I have been doing my homework on diverted neutrals in the background and have also ruled out a N-E link preferring a TT earthing system to avoid a proportion of the neutral currents returning from not only my own installation but other consumers within the same building via the bonded extraneous conductors and the EMI / EMC effects associated with this (although the extraneous conductors could have means of isolation installed, plastic piping etc.). See Section 444.4.3 and 444.4.4 in the regs for more information on mitigating EMI / EMC effects. I have opted for 2P RCBOs which should disconnect when there is a sufficient difference between L-N including that from a N-E fault (at which point a proportion of an external neutral diversion current from other consumers in the building could flow back through the neutral in one of my circuits).


Also under 444.4.3.1 - "Regulation 8(4) of the Electricity Safety, Quality and Continuity Regulations (ESQCR) prohibits the use of PEN conductors in consumers’ installations.” which enforces the costumer not being permitted to add a N-E bond (i.e neutral and earth are separated by the distributor prior to the costumer connection) which would apply to my scenario (at least for the UK).


Please can you reply to the original post to avoid parallel posts on the same topic :)


Thanks, Chris