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 Taps and radio behaviour
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 Return to top of page · Post #: 31 · Written at 10:47:32 AM on 11 June 2018.
Marcc's avatar
 Marcc
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5254

With RCD's, unlike the old system, the neutral within the house floats, rather than being tied directly to ground.

When we upgraded here, in one shed, we found the N to E short (after about an hours looking). I am wondering what sort of wire & conduit is in that building?

At one point here Energy Safe Vic (or whatever there called this week) was recommending Insulation testing circuits every five years. Might be worth investigating? That metal conduit can be dangerous & has killed.

Interested also in where this has ended up........
 
 Return to top of page · Post #: 32 · Written at 12:30:53 PM on 11 June 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6687

With RCD's, unlike the old system, the neutral within the house floats, rather than being tied directly to ground.

Not the case here. In the case of sub-boards, the earth bus is not linked to the neutral bus, but at the main board it is.
 
 Return to top of page · Post #: 33 · Written at 5:48:47 PM on 11 June 2018.
Brad's avatar
 Brad
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7303

If a building has VIR cable in split seam conduit, I wouldn't recommend testing, I'd recommend replacement. RCDs and VIR cable rarely go together well. The cable is fairly stable inside the pipe but at the ends where the wires terminate to lamp holders is where problems arise with overheating and mice.

GTC is correct - in the 'bible' (SAA Wiring Rules) it states that an MEN link can only be installed once in an installation - at the main switchboard.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
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