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Hi all,
Does anyone recognise the oven in the attached picture? Looking for even a potentially similar model if nobody can match it exactly as I know there could be multiple that look the same.
Bit of background here. Shadowed one of my guys to a job a month or so ago (try to do this every now and again) and there was no switch for the oven on the wall and the oven was dead. Checked the fuse box and nothing had tripped, turned out the customer had it wired into a 13amp plug socket and the fuse had gone.
Advised the customer 13amp plug isn’t sufficient for a double oven and told them to get an electrician to check it over. Replaced a blown element and told the customer in the meantime they could use it short term if they only used one oven at a time as they need to make dinner that night but as she advised they used both ovens together a lot, advised this was not safe and needed to get it checked.
Fast forward a month and the customer contacts us saying an electrician has been out and told them we were totally wrong, perfectly fine with running this full load through a 13amp plug. Now, I assumed the customer exaggerated what they were told so phoned the electrician’s company myself and the guy basically said he didn’t visit himself, but he didn’t see a problem with the advice given as many double ovens are fine full load on a 13amp plug.
Basically the customer claims there is no rating plate, electrician advised “his guy” couldn’t see one either but couldn’t advise how they deemed the appliance safe without knowing the wattage. I told him the bottom element is ~1700w on the half moon element alone and the picture indicates there are 2 elements in the top oven, he still tried to make the point it would likely still be safe to use at full load on a 13amp plug and couldn’t fault the advice given.
What I’m really looking for here is someone to give me a potential model number that I can then use to find a manual and show this customer whether or not it can safely be installed on a 13amp plug, as when you have an electrician claiming it’s fine, they now think I’m wrong but I’m adamant I am not.
Re: Neff Double Oven
I had the same thing took the oven out of the housing to find it connected to a burnt out 13a plug. this fitted by kitchen fitters. I advised to get an electrician to fit 30a supply and said double ovens draw more than the stated 13 amp when used both cavities at once hence the burn out although not on long enough to take the fuse out..
customer contacted the kitchen fitting firm they told her they always carried out work this way it was perfectly ok and my information was out of date.electrical science dont change do the sums to calculate the load and wire accordingly.
but what do I know wilf
Re: Neff Double Oven
This appears to be a U1721W. The installation instructions don’t tell you the fuse rating but refer the installer to the rating plate to determine total connected load.
But as you say, fan element is 1700W, grill element in small oven is 2300W according to The Element Man, so that gives a minimum total load of over 4kW, ie a separate 20A circuit as a minimum.
The reason these installers get away with a 13A plug is that a standard 13A fuse requires a steady current of over 20A to blow.
Re: Neff Double Oven
stratfordgirl wrote:
The reason these installers get away with a 13A plug is that a standard 13A fuse requires a steady current of over 20A to blow.
reminds me of the old electrical regs. rated fuses as close and coarse excess current protection
definition of coarse excess current protection was ]
“A fuse, when carrying 1.5 times its rated current takes over 4 hours to blow”
needless to say close excess current protection took under 4 hoursDave
Re: Neff Double Oven
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stratfordgirl wrote:This appears to be a U1721W. The installation instructions don’t tell you the fuse rating but refer the installer to the rating plate to determine total connected load.
Darn it you just beat me to it. I have just been going through all the installation instructions by ENR on Tradeplace, like you I could not find the total connected load.
It’s not rocket science working out amperage.
Don
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