Im thinking of buying this inverter: ebay.co.uk/itm/290670840840? … 1423.l2649
To run this microwave: tesco.com/direct/tesco-silve … pageLevel=
Will this inverter be sufficeient enough to run this microwave? Also,what cable will I need to wire the inverter to my batteries and where will be best place to get it from? Cheers.
It will work, infact it’s double what you require, but better with something larger.
All you need is some heavy duty cable. 1.5mm should do. Try screwfix any place like that.
If It’s a 12v inverter make sure you only connect it to one of the truck batteries and not both.
stagedriver:
It will work, infact it’s double what you require, but better with something larger.
So I could possibly get away with a 1500watt inverter? i was under the impression the inverter was better to be twice the size of the application you want to power so it was well on top of the job? Maybe I could get away with a 1500watt with 3000 peak?
You need a supply cable to deal with the max standard power of the invertor, not just the 700W of the microwave. 2kW at 24v is a bit over 40A - you’d want 6mm cable at the least, if not 10mm. 1.5mm will give you around 14A before it starts getting rather warm, and you’d also get voltage drop - I haven’t got my books to hand at present, but 17mV/A/m rings a bell for 1.5, meaning that at full tilt, you’d lose 2v on the cable run alone.
If you want, I’ll check my books tomorrow and give you an exact figure?
Gary
Why not buy a 24v microwave, comes complete with cables etc. I bought one for about £230 IIRC. Less hassle all round.
I think I read somewhere that the initial charge the magnetron needs to get started knocks hell out of an inverter over time.
should be ok
tescotechsupport.com/manual/ … microwave/
Specifications
Model No. MMSB1710
Mains Voltage 230V-240V AC, 50 Hz
Mains Power 1150W
Oven Capacity 17 Litres Microwave
Output 700 Watts
Microwave Frequency 2,450 MHz
Net Weight 9.8 kg approx
As I understand it, there is no truck on the market capable of running a microwave oven.
Maybe one day there will be. If so, it will only be 30 years behind “the rest of the world”
Harry Monk:
As I understand it, there is no truck on the market capable of running a microwave oven.
Not sure I understand that Harry
scaniason:
If you want, I’ll check my books tomorrow and give you an exact figure?
If you wouldn’t mind Gary, that would be much appreciated. Cheers.
raymundo:
Harry Monk:
As I understand it, there is no truck on the market capable of running a microwave oven.Not sure I understand that Harry
Nor do I. My 24v microwave was one of best things I ever bought. Doesn’t use much power either, certainly don’t need to run the engine
xfmatt:
scaniason:
If you want, I’ll check my books tomorrow and give you an exact figure?If you wouldn’t mind Gary, that would be much appreciated. Cheers.
OK, just worked through it. 6mm flexible cable will give you a capacity of 55Amps, with a voltage drop of a smidge over 1 volt. If you put a 50A fuse inline with this, it will let you go up to the 2000 watts, but will also let you go a little bit into the surge rating of the invertor as well. A 40A will hold you around the 2kW limit (this is in theory - in practice fuses tend to go a considerable way beyond their rated limit for quite some time).
I’ve used an overall cable length of 3m - 1.5m on + and 1.5 on -. Don’t, whatever you do, use the ■■■ lighter socket to run it!!!
You could use 4mm cable, as long as the fuse was 40A or below - 42A is the limit for this size cable, so it will run warm. These current ratings are for sheathed flexible cables, and the figures give a conductor operating temperature of 90oC - fine for the cable & insulation, but make sure they’re not strapped to anything too temperature sensitive! You could go for the next size up if the temperature is a concern, but I can’t imagine there would be anything along the route to worry about - 90oC isn’t going to set light to anything!
If you’ve got any other questions, feel free to shout.
Dont worry about cable size, that inverter and microwave will be perfect together. You can also use the inverter to charge you phone, run your laptop etc…
But get a professional to wire the inverter in, if your paying £200 + pay an extra £50 to get it running properly.
raymundo:
Harry Monk:
As I understand it, there is no truck on the market capable of running a microwave oven.Not sure I understand that Harry
Sorry, should have made it clearer, there is no truck on the market capable of running a mains powered microwave oven.
And I’ve just realised that all I wrote above is rubbish - I’ve based my figures on a 1kW load - you’d need to double it all for a 2kW invertor. 80A feed to this unit is going to mean massive cables - minimum of 10mm. With that sort of current, you’re going to get major hot-spots on any bad joints, so it might be better to do what JD suggested, and get a pro to wire it in. It will also need a decent isolator, so all in all, probably better to give it to an auto electrician.
Gary
I know what we need here, Carryfast. I’m sure he’ll be able to give us the best solution. No, the only solution.
Proper truckers like carryfast don’t cook they live on yorkie bars. 
switchlogic:
I know what we need here, Carryfast. I’m sure he’ll be able to give us the best solution. No, the only solution.
Which is that you can plug a microwave oven into the cigarette lighter socket, but only if the truck is a 6x4 
That would be great in one of his beloved kenworths with 12v electrics. How long before the dashboard melted.
scaniason:
OK, just worked through it. 6mm flexible cable will give you a capacity of 55Amps, with a voltage drop of a smidge over 1 volt. If you put a 50A fuse inline with this, it will let you go up to the 2000 watts, but will also let you go a little bit into the surge rating of the invertor as well. A 40A will hold you around the 2kW limit (this is in theory - in practice fuses tend to go a considerable way beyond their rated limit for quite some time).
I think you’ve done your maths wrong.
A 2000W inverter that is 90% efficient is going to need about 2250W input at max output which at 24V is over 90A. If it’ll peak at 4000W that is obviously twice that! So you’re going to want at least 16mm2 cable if you want to be able to use the full power of the inverter without melting something.
I’ll echo what others have said - get someone who really knows what they’re doing to wire it up. If it’s done wrong there is a good chance of a fire.
Paul
(Edited to add, I’ve just read your above post where you’ve basically said the same as me)
repton:
I’ll echo what others have said - get someone who really knows what they’re doing to wire it up. If it’s done wrong there is a good chance of a fire.
That’ll be Geoffrey Carryfast then…