Forum Replies Created
-
Posts
-
Re: The Fault Code Guide
Good Evening Ken
Is there any intention to setup the Fault Guide to work on Blackberry smartphones?
Regards
Re: changover a new double oven
So, as I stated correctly before then.
I wonder how this is going to work with a 13A spur? I can see a callback and other problems happening with this one. 😯
Regards
Re: changover a new double oven
Quote…. ‘In theory, surely it depends what rating cable has been used for the ring main, how many sockets are on the ring, and what fuse is in the breaker for that circuit, as to whether its necessary to insist on the expense of getting a spark out for it? If certain factors outlined below are ok, then would it not be adequate to connect it under an advisory condition that remedial work is undertaken at the customers earliest convenience? ….’ unquote.
This is not correct. Ring final circuits are normally wired in 2.5mm T&E, or in old money, 7/029 in. Other variations (e.g larger cables) are unusual to say the least.
If there is a heavy load on the ring (say in the kitchen e.g washing machine, dishwasher etc) then current hogging can occur on one leg leading to premature failure. UNDER NO CIRCUMSTANCES SHOULD YOU CONNECT a heavy load oven to a ring. No. of sockets do not contol the load by any means.
By all means, advise the customer that an additional radial circuit is required. But, leave the oven disconnected until a new circuit has been installed by a ‘Competent Person’ as defined by Part P.
I’m sure you do not wish to ‘grip the bar’ in the event of an adverse incident.
If you would like further info on current hogging in ring circuits then let me know.
Regards
Re: changover a new double oven
If the oven exceeds 2kW, it is considered best practice to wire it seperately to the Consumer Unit as a radial.
Keep in mind that this sort of wiring work comes under the Part P stuff.
Regards
Re: Neff U1721N2GB/01 Oven Blows Trip
Very strange.
Have you tried disconnecting the fan element completely and then run the oven? This would then eliminate the element failing when it is hot.
Did you carry out insulation testing with the selector in the fan oven position?
I suppose you have verified that the supply to the oven is okay (a missing neutral will trip the RCD)?
Have you checked the RCD with a RCD tester (just in case :twisted:)
I presume that you have ‘eyeballed’ the wiring to verify nothing is falling off or showing signs of breakdown.
Have you checked the grill element?
Have you checked the Function Switch & Selector Switch to make sure that nothing is breaking down to earth?
Starting to grab at straws now 😳
Can you get the oven back to your workshop & test there?
I’ll give this some more thought.
Let me know.
Regards
Re: Neff U1721N2GB/01 Oven Blows Trip
I have changed a good number of fan motors over the years in Neff ovens. You may just have to take a ‘punt’ and see what happens. 😉
RegardsRe: Europart WTA 10{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} discount con
As indicated in a previous post, I stopped using Europart.
My business was too small for them and they closed the account.
I now use Qualtex. Have found them to be more helpful & friendly so far.
Regards
Re: BSH Dishwasher Recall
Ooops a bit slow. Been away in hospital.
Just catching up on post and other info. Could not find anything on the forum, so I thought it might have got missed.
Re: Talktalk what a joke!
Quote …..’Have they taken over AOL in the UK too?’……. unquote
Yes – It has gone right down the tubes – even the Customer Service people in Ireland are fed up with Talk Talk.
The quality of the AOL service has gone right down. Regular failures with their service. 👿
But they all seem to be the same.
Regards
Re: Oven not tripping RCD
You will find that most RCDs will start tripping at about 22mA. This is due to cable capacitance.
The 30mA trip rating for RCDs was set based on shock current survival rates 😈 (can’t remember the EN standard for this).
Keep in mind that most modern RCDs operate based on differential current measurement. i.e difference between line and neutral currents.
350kohms represents about 0.7mA of leakage.
Keep in mind that when you measure the insulation resistance of an element it is cold. When hot, the element insulation resistance could be driven a lot lower.
HTH
Regards
Re: Neff B1430NOGB/02 sgl f/oven w. grill. Tripping problem.
Quote……’Thanks for the reply, Brains. Hmm. I did suspect something like that might be going on. But the sort of current put out by my megger which runs off a 9v PP3? I can’t imagine it could damage anything! ‘…… Unquote
Keep in mind that the test voltage is generated by an invertor. Its not the current that does the damage, its the voltage.Voltage tends to stress insulation dielectrics.
Keep in mind that with the old hand crank ‘Meggers’ as the current increases (due to insulation breakdown), the output voltage drops severely. Modern electronic meggers, tend to main output volts for quite a significant output current (i.e low insulation resistance).
HTH
Regards
Re: Neff B1430NOGB/02 sgl f/oven w. grill. Tripping problem.
Mike
Sometimes when you test elements at 1000V you can pop the insulation leaving a small pin hole which gets bigger as the element heats up.
Use a max of 500V when using the megger.
Also, I have had faulty elements in the past.
Without wishing to teach you to ‘suck eggs’, I always run the oven or cooker for about 5 mins and run up to about 150 deg C before I leave – generally, I suggest the customer puts the kettle on and we have a chat about the weather, politcs, you get the idea I’m sure – 5 mins soon flies by. I have caught a number of duff elements over the years using this method.
Sometimes ‘cold’ insulation testing’ does not show a duff element 👿
Regards
