Electronics > Projects, Designs, and Technical Stuff
Earthing mains power supply
themadhippy:
If i was doing the job i wouldn't take an earth or put a rod in at the kiosk keeping it a true TN-C-S within the kiosk and make the supply at the property a TT system.If using swa to connect from the kiosk to property only connect the armouring at the supply end.
akis:
--- Quote from: Monkeh on June 27, 2020, 04:44:05 pm ---Okay, so you're moving the cutout away from the building.
What's the supply type?
--- End quote ---
I think it is live in the centre and neutral on the steel armour, but cannot be sure.
Monkeh:
--- Quote from: akis on June 27, 2020, 05:42:39 pm ---
--- Quote from: Monkeh on June 27, 2020, 04:44:05 pm ---Okay, so you're moving the cutout away from the building.
What's the supply type?
--- End quote ---
I think it is live in the centre and neutral on the steel armour, but cannot be sure.
--- End quote ---
Well, you'd need to ask the DNO.. they probably aren't using steel armour for that matter.
If you have a TN-C-S supply I see no problem whatsoever with simply carrying that on to your building and performing bonding as normal. No need to TT, no rods, just use the supply normally.
themadhippy:
--- Quote ---If you have a TN-C-S supply I see no problem whatsoever with simply carrying that on to your building and performing bonding as normal. No need to TT, no rods,
--- End quote ---
Depends how you interpret the regs regarding extending TNCS outside the equipotenial zone,and whats regarded as the zone.
Monkeh:
--- Quote from: themadhippy on June 27, 2020, 06:53:59 pm ---
--- Quote ---If you have a TN-C-S supply I see no problem whatsoever with simply carrying that on to your building and performing bonding as normal. No need to TT, no rods,
--- End quote ---
Depends how you interpret the regs regarding extending TNCS outside the equipotenial zone,and whats regarded as the zone.
--- End quote ---
Well, there's absolutely no need to have any exposed metal whatsoever at the site of the cutout, which means there is no zone to care about.
But yes, the joys of equipotential zones, bonding, and exporting are real.. Remember radiator clamps? Some serious re-evaluation of that bit of The Book is needed. Again. Let's bring up car chargers for more hilarity.
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