External socket for sewage plant - Earth Rod?

[frontier219]

Hi all,

I have been asked by a company that installs sewage systems to have a look at some recommendations from another sparks who has looked at one of their jobs. I haven't visited the job, but I have seen a few of their installations in the past and he has me at a bit of a loss. The plant is apparently connected into a commando socket in a small waterproof housing with the pump, near to the septic tank. This is run in SWA back to an external spur on the side of the house, fed from an existing socket which is on an RCD protected circuit.

A sparks has inspected the property and told the customer that the SWA should be seperated and an earth rod installed because "PME Supply must not be used for outdoor wiring due to the risk of the incoming neutral being open circuit."

Can anyone shed any light on this, or send me some reg numbers to look up? It seems like massive overkill as there are no extraneous conductive parts that this could affect.

 

[Wilko]

So he has quoted to TT it but not to install an RCD on it?

Let's hope not, worst of both worlds ...

 

[telectrix]

What do the manufacturers instructions stipulate for the sewerage system?

---- flows downhill..

 

[Pete999]

**** flows downhill..

It may flow down hill Tel, but in business it always ends up at the top of the pile.

 

[sparkybudge]

I got medical locations with that link? Thought 722 might be more of a facsimile? 'Cept there's no metal car, just a load of pooohh.

Maybe refer to using a socket circuit as the supply for the external equipment. Is the commando socket(BS4343) 16A, if so i'd quote REG: 411.3.3 (i) and state the protection for the socket outlet only. As you may have noticed exporting the earth is a very subjective matter.

 

[Deleted member 26818]

Glad someone has said that, had me worried that I'd missed something somewhere. I feel like I might need some proof though, anyone know any relevant regs for this? I'm struggling to find the right term to look up.

There aren’t any relevant Regs, because it’s not an issue.

 

[cprfenom]

In your first post at the bottom of the paragraph
"This is run in SWA back to an external spur on the side of the house, fed from an existing socket which is on an RCD protected circuit." So unless it was a time delay there would be no requirement for it?