Earth rod needed for shed supply or pme allowed ????

[Tim collins]

should you install a earth rod if running a feed to a shed which is built on timber frame and is all timber , no metal parts and will have no services ie gas or water in it so no need for bonding only a supply for a light and a couple of sockets or can you use a pme earth from fuseboard if the shed supply is run in 6mm armoured from the outside of the house ( inside house 6mm t+e to fuseboard ) protected by 32amp rcbo will be installing a 2 way board with rcd main switch in shed approx 25 meters away

 

[MDJ]

I wasn't trying to explain that.

It must be your moustach putting me off my posting lol, apologies then

 

[Midwest]

I never in 40 years of my working life asked for advice from any scheme.

Have you an admission to make; have you been a member of one of the schemes?

 

[Michael Sands]

To be honest who needs to ask a schemer we have all we need here and more
24/7

 

[Midwest]

Whilst I value the knowledge & experience members on this forum have, if you have a question thats pertinent to a design or install on a working job, I don't see that you can rely on an response from a forum member. If it all goes horribly Pete Tong, I wouldn't like to be using 'the advice I received from Mr Miggins, on the electrical forum was' in my defence. Hence when I did seek guidance from my schemes technical, it was always in an email format, copy secured away.

I would use and have used this forum for advice, but always knowing the answer almost, and just seeking confirmation or agreement, like you would from any other working colleague.

I have read quite often the response, 'why ask some faceless individual on a forum, ask your scheme'.

 

[Michael Sands]

As you said you need confirmation that your thoughts are on par with the trusted members on here you know who to heed and who to just ignore as some like a windup

 

[Toneyz]

I never in 40 years of my working life asked for advice from any scheme.

Only had dealings with NICEIC via the previous so-called electrical contractors I worked for, spoke to their technical helpline on a few occasions and I found them extremely knowledgable

 

[Strima]

Only had dealings with NICEIC via the previous so-called electrical contractors I worked for, spoke to their technical helpline on a few occasions and I found them extremely knowledgable

Spoke to the NIC tech helpline on Friday for a sanity check and he knew the reg number straight off the top of his head before I'd even finished speaking.

 

[oracle]

You can use two RCD's, one type S at the CCU protecting the supply to the shed and normal RCD protecting the shed final circuits. This will give you discrimination between the two

 

[Strima]

You can use two RCD's, one type S at the CCU protecting the supply to the shed and normal RCD protecting the shed final circuits. This will give you discrimination between the two

What if the RCD in the CU is providing additional protection for other circuits?

 

[oracle]

Obviously I would use RCBO to supply the shed. I don't use split boards, I use breakers and RCBO's as suitable for each circuit.

 

[Nigel]

You can use two RCD's, one type S at the CCU protecting the supply to the shed and normal RCD protecting the shed final circuits. This will give you discrimination between the two

Why would you need a Type S? RCD?

 

[oracle]

BS7671 Regulations 314.1(iv)and 531.2.4 require installations to be subdivided into circuits to prevent accumulated protective conductor currents causing unnecessary tripping of RCD’s. Where there are RCD’s in series for Additional Protection, then Selectivity must be provided to comply with Regulation 536.3.
This can be provided by the use of Type S RCD’s which will provide a time delay to allow for a lower rated RCD down stream of the main RCD to operate first under fault conditions.

 

[Nigel]

BS7671 Regulations 314.1(iv)and 531.2.4 require installations to be subdivided into circuits to prevent accumulated protective conductor currents causing unnecessary tripping of RCD’s. Where there are RCD’s in series for Additional Protection, then Selectivity must be provided to comply with Regulation 536.3.
This can be provided by the use of Type S RCD’s which will provide a time delay to allow for a lower rated RCD down stream of the main RCD to operate first under fault conditions.

That does not answer my question.

 

[westward10]

Isn't that the 18th, too lazy to look.

 

[Dillb]

BS7671 Regulations 314.1(iv)and 531.2.4 require installations to be subdivided into circuits to prevent accumulated protective conductor currents causing unnecessary tripping of RCD’s. Where there are RCD’s in series for Additional Protection, then Selectivity must be provided to comply with Regulation 536.3.
This can be provided by the use of Type S RCD’s which will provide a time delay to allow for a lower rated RCD down stream of the main RCD to operate first under fault conditions.

That does not answer my question.

@oracle didnt quote you