Where am I going wrong here?

[roaringgirl]

It looks more like the advertiser has made a mistake, than attempted a scam.

By the way, you'll need some serious battery capacity to run a 2000W induction hob. We have 400Ah of lithium and even when fully charged, running 2x800W induction hobs at full chat pulls the voltage down low enough to stop the fridge (12.2V)

 

[Concerto]

The only true way to solve the power issue for an induction hob is to use a generator. I considered getting an induction hob but decided against as I could only use it when I had shore power. However when I have shore power, I might prefer to use my gas oven to cook with, get a take away or eat ashore, but you will also need somewhere to safely store it whilst sailing unless it is part of the galley units.

 

[Kelpie]

It looks more like the advertiser has made a mistake, than attempted a scam.

By the way, you'll need some serious battery capacity to run a 2000W induction hob. We have 400Ah of lithium and even when fully charged, running 2x800W induction hobs at full chat pulls the voltage down low enough to stop the fridge (12.2V)

We run a 1600w hob (I'm guessing you have the same one- Vango Sizzle?) from a 271Ah lithium bank with a 2.4kw inverter, and the voltage never dips below 13v. The wiring run from battery to inverter is about 500mm of 75mm². Sounds like you have a bit of loss somewhere?

 

[Kelpie]

The only true way to solve the power issue for an induction hob is to use a generator.

Or revert to gas cooking. We don't have a generator.
Sticking a small portable induction hob on top of the gas cooker was much easier than ripping the old system out.
It's also really nice to have two completely independent means of cooking. Funnily enough we've probably had more problems with the gas system than the electric, but both have been out of action for a few days at different times.

 

[AngusMcDoon]

It looks more like the advertiser has made a mistake, than attempted a scam.

I don't agree. There are loads on ebay that make similar stupid claims - search on 10,000W inverter and loads come up. Here's another advert for the same one as Coopec's pile of trash - same ridiculous claim...

10000W Pure Sine Wave Inverter 12V DC to 220V AC Car Power Solar Converter Truck | eBay

10,000 W with 12 V input. That's 1000 A into those tiny connectors. It's only got a single 220 V socket, so that would put out 45 A, way more than the rating of a 13 A socket. If it's 12 V input and claims a 10 kW output and is small and has a socket on the end (and costs less than £3k) - it's fraudulent junk, because 10 kW inverters have a 48 V input requirement, are a hefty 30 kg and are always designed to be permanently mounted and permanently wired to a consumer unit.

They are all junk and are all scams - pure and simple, like many other too cheap to be true things on ebay.

 

[PaulRainbow]

I don't agree. There are loads on ebay that make similar stupid claims - search on 10,000W inverter and loads come up. Here's another advert for the same one as Coopec's pile of trash - same ridiculous claim...

10000W Pure Sine Wave Inverter 12V DC to 220V AC Car Power Solar Converter Truck | eBay

10,000 W with 12 V input. That's 1000 A into those tiny connectors. It's only got a single 220 V socket, so that would put out 45 A, way more than the rating of a 13 A socket. If it's 12 V input and claims a 10 kW output and is small and has a socket on the end (and costs less than £3k) - it's fraudulent junk, because 10 kW inverters have a 48 V input requirement, are a hefty 30 kg and are always designed to be permanently mounted and permanently wired to a consumer unit.

They are all junk and are all scams - pure and simple, like many other too cheap to be true things on ebay.

Post of the week

 

[coopec]

Those feedback ratings are nonsense. Do you really think that it means the product is any good and will do what it says when it clearly does not? All it means is that somebody has ticked a box and it could be for a completely different product.

Best to do proper research and understand the principles underlying what the product is about rather than believe a ticked box.

As said drawing 2KW off a 12 or 24V battery is a huge number of amps which requires heavy duty wiring and a big bank

"After every transaction, buyers and sellers can rate each other by leaving Feedback. You can find your Feedback score next to your username whenever it’s displayed on the site. Buyers can rate a transaction with you as positive, neutral or negative. Sellers can rate buyer transactions as positive. "
Feedback and seller ratings

 

[coopec]

I haven't read all the posts but I am convinced the seller is honest (100% Feedback Rating) but he has made a mistake with the decimal place. He means 1000W (not 10000W). A 1000W (peak) inverter would be quite small and could only handle some lighting. For that size inverter the price asked would be entirely appropriate.

 

[Tranona]

"After every transaction, buyers and sellers can rate each other by leaving Feedback. You can find your Feedback score next to your username whenever it’s displayed on the site. Buyers can rate a transaction with you as positive, neutral or negative. Sellers can rate buyer transactions as positive. "
Feedback and seller ratings

Smoke and mirrors construct to try and convince you that it is useful information.

It does not tell you whether the product is c**p or not. I hope by now you will have worked out that what the product claims to do is impossible and "scores" based on whether they ship on time, answer queries, charge the right postage and so on cannot change that.

Simple facts (as explained by several posters) running an electric cooker on a boat requires a lot of power and if you are going down the inverter route you need very big battery capacity and serious inverter with serious heavy duty cabling. A little box that costs the same as a few beers connected by a bit of lighting flex is not going to do that!

 

[coopec]

It looks more like the advertiser has made a mistake, than attempted a scam.

By the way, you'll need some serious battery capacity to run a 2000W induction hob. We have 400Ah of lithium and even when fully charged, running 2x800W induction hobs at full chat pulls the voltage down low enough to stop the fridge (12.2V)

I agree with you! You have restored my faith in the forum

After reading some of the comments here you start to wonder who does their shoe laces up for them every morning

 

[AngusMcDoon]

I haven't read all the posts but I am convinced the seller is honest (100% Feedback Rating) but he has made a mistake with the decimal place. He means 1000W (not 10000W). A 1000W (peak) inverter would be quite small and could only handle some lighting. For that size inverter the price asked would be entirely appropriate.

Yeah, I expect so, along with the thousands of other sellers who accidentally and completely honestly made exactly the same mistake on similar items.

 

[Tranona]

I haven't read all the posts but I am convinced the seller is honest (100% Feedback Rating) but he has made a mistake with the decimal place. He means 1000W (not 10000W). A 1000W (peak) inverter would be quite small and could only handle some lighting. For that size inverter the price asked would be entirely appropriate.

No it is not! "Proper" basic 250w inverters start at £80, basic 1000w inverters nearer £200.

You really have to recognise this is a scam.

 

[coopec]

It looks more like the advertiser has made a mistake, than attempted a scam.

By the way, you'll need some serious battery capacity to run a 2000W induction hob. We have 400Ah of lithium and even when fully charged, running 2x800W induction hobs at full chat pulls the voltage down low enough to stop the fridge (12.2V)

Yes I agree with you regarding the power required of a 2000W induction hob.

I fully expect to have the motor running (or be hooked up to shore power) while using the hob. (The alternator is 24V 60A) I did buy a suitcase 3000W inverter genset which I did intend to run on deck but my current thoughts is that it is a bit heavy - (around 30kg)

 

[AngusMcDoon]

No it is not! "Proper" basic 250w inverters start at £80, basic 1000w inverters nearer £200.

You really have to recognise this is a scam.

It's really not very difficult to 'do the research' and find out what an inverter with a genuine rating costs...

Victron Phoenix 24/1200 VE Direct UK (BS 1363) Inverter

...but there's none so blind and deaf and thick as those who've 'done the research' on Amazon and ebay and are convinced that they've found a bargain.

 

[roaringgirl]

Anyone who buys this believing it's a 10kW product, not a 1kW product is probably safer being sold a metal casing with a few rattly screws inside than playing with their electrics.

 

[AngusMcDoon]

Anyone who buys this believing it's a 10kW product, not a 1kW product is probably safer being sold a metal casing with a few rattly screws inside than playing with their electrics.

No way is it even a 1 kW continuous device - I give it 250 W at most. Similar listings give this inverter a mass of 1.2 kg. A genuine 1 kW continuous inverter will have a mass of about 7 kg because of the size of the transformer and inductors required. Here's what a genuine 2 kW inverter looks like with the lid off; look at the size of that transformer and the input power connectors...

Here's Coopec's device again from another listing...

2000W Power Inverter Pure Sine DC 12V to AC 220V Car RV Motor Converter LCD +USB | eBay

The title says 2000 W. The image says 6000 W. The text then says 650 W quickly followed by the maximum continuous is 45% of the peak 6000W, which is 2700 W. And then it says (correctly) that it's not suitable for powering any heating appliance. If all that's not a sign of fraudulent bullsheet, I don't know what is. (And the CE mark is fraudulent too).

 

[Kelpie]

There's YouTube videos of people opening up these scam products and finding a tiny inverter inside a big empty case. It is fraud pure and simple. The product works just well enough to fool you until you really need it to work to its true rating.
It happens with lots of products. Years ago I bought a big-name stage microphone at what was too much of a bargain price. It looked perfect, even the packaging was indistinguishable from the real thing. And it worked too, to a point. In a real setting it became evident that it was a cheap copy. So much effort had gone in to making it and it was a pile of junk.

Fraudulent feedback is a well known problem. It's evidently quite hard for online marketplaces to police whether transactions are genuine or not. All someone has to do is set up several accounts and then conduct a series of pretend transactions to build up feedback history. eBay don't know whether an item was actually delivered or even existed in the first place.

 

[Alan S]

Coopec, if you look more carefully at the link in your first post you will see that it is actually a 950W inverter.

Quote....
Continuous power: 350W/550W/800W/950W
Peak power: 4000W/6000W/8000W/10000W
...end quote

No way will it power your 2kW hob.
I would be surprised if it is even able to provide a continuous 950W without overheating.

 

[William_H]

Hello Clive
This post of yours makes me question the whole need thing for cooking for you. Unfortunately you will not know how you are going to use your lovely new boat until you do it for a period. I am guessing perhaps not so much camping on the boat in a marina with mains power perhaps unlike our UK friends. You might spend some time at Rottnest where dining is available on shore. But I suspect you have ideas of traveling north where you will be mostly isolated from facilities.
I admire and agree with a decision to avoid a gas installation. The option of electric cooking, excellent for shore power is going to be of limited value on boat power. Many serious mobo owners go for diesel generator like Onan. Expensive but good. This makes the whole ship electric, so microwave oven, electric kettle hot plates and oven.
I have friends who have sailed to Bali and all report on the fierce cabin heat problem in tropics. I suspect you will also want cabin air conditioning. All pointing to a need for generator that is quiet and runs on diesel.
However going to the other extreme of cost you might be able to find a methylated spirit cooker for use away from mains electricity. Scarce now days but safe but not power full. Or perhaps go for a diesel oven hot plate type cooker. The latter being bad for cabin heat. Good if you go south of course.
There is one boat at our club which was set up for electric cooking 12v with so he claimed 1000w of solar to batteries. I doubt it is very successful in real life however the boat has not left the river and is hardly used and not I think with any cooking done.
So you will have discerned that the referred to iverter is not likely a goer. You might look at "Outback" inverter brand. Made locally. ol'will

 

[Alan S]

Another reason to be suspicious - it may be a "modified sine wave" rather than a true some wave inverter otherwise they may not have added the bit in brackets...

"
Protection function: Built in short circuit, overload, overheating, low voltage and overvoltage protection. Ensure the safety of your equipment and vehicle. Charge some electronic devices on the move. (except inductive load electrical equipment and motor products).
"