by ericmark »
Sat Dec 02, 2017 5:50 am
The neutral loss first thing that comes to mind in a kitchen is either a switched FCU or some grid switches often labelled fridge, washer etc, gone faulty. Unlikely to loose neutral with a ring final as no switches to cause it to fail.
Neon screwdrivers are good tools for picking up faults like borrowed neutrals but are not really much good as a tester.
Don't recognise the fuse box, the Wilex has plug in replacements for the fuses, quite simple to change, around £11 each, really should be tested first, but unlikely to be a problem.
As to consumer unit change, first job is to test house, all too often there are faults which have been there for years, but without an RCD you just do not know the fault exists, so when the RCD is added also you need to correct existing faults.
I would be expecting over £500 for most houses which is around a days work and cost of parts. There is some options, cheap option is two RCD's covering whole house, better option is all RCBO's which means each circuit has it's own RCD.
This house has two consumer units, main one has two RCD's and a MCB not RCD protected feeding the kitchen consumer unit which has 4 RCBO's fitted. So there is an option to have say the sockets on RCBO's and the rest on two RCD's it is something to talk about with the electrician doing the work so adjusting the price for your pocket. The more the RCD's fitted (a RCBO is a RCD and MCB combined) the less likely they will trip for no reason.
I bit the bullet here after my mother put an extension lead in a bucket of water as she thought it was on fire when she saw the red neon, dementia had reached a stage where she could do silly things. In my own house RCD's were fitted years ago when my son passed his RAE at 14 years old to become a radio ham, he is now 40. My father-in-law still has no RCD protection.
Here in my mothers house the wiring was not good enough to use RCD's so to fit them needed a rewire, so it cost around £3500 to fit the new consumer unit, not cost of CU but cost of the rewire needed before it could be fitted, in my own house I still have old Wilex consumer units with the £11 MCB's fitted both feed from two RCD's in a separate box, but when fitted you could not buy consumer units with RCD's built in, would not do that today, in fact I have a new metal consumer unit ready to fit and turn three boxes into one box.
Last year I lost a freezer full of food due to the RCD tripping while away from the house. Lucky second freezer was on the other RCD so only lost one.