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dfc81

Connecting Meter to CSU >3m

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dfc81

Hi,

 

I've seen so many different opinions on this but could someone clarify;  what are the rules on connecting a meter to 100A CSU (has dual 30ma RCD's) using 25mm tails and the distance is 4-5m (1m under 1st floor, then 4m in loft of an single storey extension where CSU is located in a small cupboard).

 

I'm hoping I don't need a 100A Fused Switch on the meter side all the tails from 100A supply fuse are 25mm (double insulated).

 

Thanks

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Blue Duck

SFU > SWA > CSU 

 

need more info really...

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Andy™

most DNO will only allow 2-3mtrof tails to be protected by their fuse, so unless you speak to DNO and they allow 4mtr then you will need to install your own overload / fault protection for the wiring

 

and im sure you are aware that they may also require RCD protection at 30ma. have fun with that one

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dfc81

@blue duck: why SWA, it's not mandatory if all the wiring is internal i.e. drill hole from loft of the extension -> first floor of attached house

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Andy™
Just now, dfc81 said:

@blue duck: why SWA, it's not mandatory if all the wiring is internal i.e. drill hole from loft of the extension -> first floor of attached house

 

see line 2 of post 3

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Murdoch
22 hours ago, Andy™ said:

and im sure you are aware that they may also require RCD protection at 30ma.

 

 

Not 100% sure I agree with that

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Andy™
Just now, Murdoch said:

 

 

Not 100% sure I agree with that

 

may. im not there, i dont know how he's installing it

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