steelysteph

We have a built-in combination Microwave / Oven in our van which is plugged into a standard 13amp socket.

Up to now we haven't had any problems because we've only been to sites with hook-ups but what should we do when we start going 'wild'?

terry

buy an inverter or don't use it
You will need at least 1,000 watt inverter if you have a 700w micro because it surges to start,better not to use it wild
terry

apxc15

As said previously, learn to live without it. Using an inverter is a huge drain on the batteries.

robley7636

I used an inverter for an 800 watt microwave, it was a 1000 w and work OK with two 110amp batteries and a solar panel to top up the batteries. We used it while using french aires for 8 weeks but only for about 20 to 30 mins a day

Digger Driver

I would use a generator!
Much less bother!

moandick

Sorry, Digger, but some plonker like me was bound to ask - "!How do you cook a roast in a generator?"

__________________

djchapple

A 110Ahr battery would at the very best supply 100A for 1 hr at 12V = 1.2kw for one hour.

In practice it would provide only about 60% of this, i.e. 720W for one hour.

To look at it another way a 1000W converter would (again in theory) take 1000/12 = 84A. In practice it would be nearer 90A.

This type of current means that the inverter must be wired directly into the battery using very stout cables.

In general large inverters are only feasible with large banks of batteries or are just for emergency use.

American Dream

Genny for me too.

An inverter with that sort of power output and proposed run time would flatten the Leisure batteries in no time as has been mentioned previously.

I guess if you're going "wild" then perhaps it IS best not to use it.

__________________
..Classic Dodge.RV . "Happy Trails". Rock Autos (USA) Classic Parts.

pappajohn

you could always spend a small fortune on a 12v microwave.

__________________
I dont have a problem with insanity,
I enjoy every minute of it,

djchapple

This would also impose a huge drain on the batteries and the motorhome wiring loom.

For example 720 Watt is 60 amps - no standard motorhome wiring can get anywhere near 60 amps. Most circuits have a maximum of 25 amps or much less.

You need a very serious 12V power supply and non-240V charging system to provide such power.

For standard MHs microwaves are a no-no without 240V ehu.