rcd tripping on a ring main | Page 2 | on ElectriciansForums

Discuss rcd tripping on a ring main in the UK Electrical Forum area at ElectriciansForums.net

Joined
Jul 13, 2018
Messages
55
Reaction score
17
Location
Cheshire
Ok help before a pull out the rest of my hair got an rcd that trips when ring main breaker turned on got continuity but still trips when only live connected ant ideas
 
OP is saying he has only lives connected, energises mcb & then RCD trips. That 'lecky is going somewhere, and as already suggested there must be a parallel path to earth. Even 16 MΩ sounds like there's an issue somewhere, connected load or earth fault.
 
ok so got continuity not shorts insulation resistance low but not too low at 16meg and again all I have connected or two lives of the ring no neutrals for any circuit no earths for any circuit. RCD stays on until I turn the breaker on. Never come across a fault like it
Why would you energise without cpcs connected (let alone neutrals)?

This is not a safe way of fault finding.
 

Reply to rcd tripping on a ring main in the UK Electrical Forum area at ElectriciansForums.net

News and Offers from Sponsors

  • Sticky
  • Article
Wicked I've just actually looked through it and it's very smart. Some good stuff in it. There's a tile association company that do a magazine...
Replies
2
Views
283
  • Article
OFFICIAL SPONSORS These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then...
Replies
0
Views
273
  • Article
Hi everyone, Another weekend, another sale! Get ready for colder days with Haverland Radiators, combining efficiency with modern design. Keep...
Replies
0
Views
351

Similar threads

My guess is an earth to N fault in the damaged light fitting. This will become a problem when other devices draw large currents.
Replies
2
Views
321
L
  • Question
My Understanding is the 6 Months interval is IET Guidance and this wording is incorporated onto the label which is a requirement in 514.12.2 where...
Replies
9
Views
604

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top