RCD socket outlet.

Good morning members of the flat earth society, at least it feels that way as those people refuse to believed any evidence that is contrary to their belief.


A few points that may help some of you come to a different view.


Chris


Your SRCD near doors to the outside on your 15th Edition installation were no no doubt put there to comply with regulation 471-12 of the 15th Edition to protect leads and appliances going outside the equipotential zone. Your SRCDs would have no doubt complied with BS 7288-1990 not the current BS 7288-2016. I would recommend you bring your whole installation up to the 18th Edition standard for the added benefits. Just to show I am not smug I have a house with a 16th Edition installation. I have a new dual RCD board sitting on the floor waiting for me to get my a**e in to gear and get it fitted, in my defence I do now have Type 2 surge protection on my newly fitted REC 2 isolator carried out as part of the enabling works for the CU upgrade.


Andy B


Back to school for you. RCDs do not limit touch voltage to 50V.  Andy J pointed you in the right direction. RCDs do not limit current or voltage they limit time a set current can go for. Most of our protection is time based. The touch voltage under earth fault conditions is dependent on the ratio of R1 and R2. Also your comment on 50V and sometimes 70V being a whim of JPEL, not true. I assume you are referring to 722 which relates to hand to foot contact, not hand to hand.


You asked what law must be complied with? If it domestic installation work then the Building Regulations requires compliance with BS 7671 not just for notifiable works. The Approved Document says "should" I would have preferred "shall".


To help you get off to sleep this afternoon post a traditional British Sunday lunch I would recommend reading the following.


1. Approved Document P.

2. BS 7288-1990 and BS 7288-2016.

3. BS 7671 531.3.6 noting the word "shall".

4.BS 7671 511.1. and then a look through Appendix 1 to see if BS 7288 is there?

5. BS 7671 Regulation 133.1.3.

6. And for good measure and to see the big picture BS EN 61140-2016 "Protection against electric shock common aspects for installation and equipment, and in particular Clause 5.5.1 re. Additional Protection.


I can hear the chants now of "How the hell can I read all those standards, have you seen the price". No you don't have to, the wise old men and women on JPEL have done that for you and put the outcome in BS 7671. 


If I may ask a rude question, " Are you happy to sign EICs and Minor Works as being compliant with BS 7671 when you have fitted an SRCD"? How would you code a BS 7288-2016 having discovered one on a periodic inspection?

Good morning members of the flat earth society, at least it feels that way as those people refuse to believed any evidence that is contrary to their belief.


A few points that may help some of you come to a different view.


Chris


Your SRCD near doors to the outside on your 15th Edition installation were no no doubt put there to comply with regulation 471-12 of the 15th Edition to protect leads and appliances going outside the equipotential zone. Your SRCDs would have no doubt complied with BS 7288-1990 not the current BS 7288-2016. I would recommend you bring your whole installation up to the 18th Edition standard for the added benefits. Just to show I am not smug I have a house with a 16th Edition installation. I have a new dual RCD board sitting on the floor waiting for me to get my a**e in to gear and get it fitted, in my defence I do now have Type 2 surge protection on my newly fitted REC 2 isolator carried out as part of the enabling works for the CU upgrade.


Andy B


Back to school for you. RCDs do not limit touch voltage to 50V.  Andy J pointed you in the right direction. RCDs do not limit current or voltage they limit time a set current can go for. Most of our protection is time based. The touch voltage under earth fault conditions is dependent on the ratio of R1 and R2. Also your comment on 50V and sometimes 70V being a whim of JPEL, not true. I assume you are referring to 722 which relates to hand to foot contact, not hand to hand.


You asked what law must be complied with? If it domestic installation work then the Building Regulations requires compliance with BS 7671 not just for notifiable works. The Approved Document says "should" I would have preferred "shall".


To help you get off to sleep this afternoon post a traditional British Sunday lunch I would recommend reading the following.


1. Approved Document P.

2. BS 7288-1990 and BS 7288-2016.

3. BS 7671 531.3.6 noting the word "shall".

4.BS 7671 511.1. and then a look through Appendix 1 to see if BS 7288 is there?

5. BS 7671 Regulation 133.1.3.

6. And for good measure and to see the big picture BS EN 61140-2016 "Protection against electric shock common aspects for installation and equipment, and in particular Clause 5.5.1 re. Additional Protection.


I can hear the chants now of "How the hell can I read all those standards, have you seen the price". No you don't have to, the wise old men and women on JPEL have done that for you and put the outcome in BS 7671. 


If I may ask a rude question, " Are you happy to sign EICs and Minor Works as being compliant with BS 7671 when you have fitted an SRCD"? How would you code a BS 7288-2016 having discovered one on a periodic inspection?