Den Posted March 25, 2008 Share Posted March 25, 2008 am i right in saying a 500w mirowave req a 1000w inverter.............500x2-10%.thanks in anticipation.. :-D Link to comment Share on other sites More sharing options...
Guest Tracker Posted March 25, 2008 Share Posted March 25, 2008 500 watts is equal to just over 2 amps nominally at 240 volts. 500 watts is also equal to almost 42 amps at 12 volts. Allowing for the initial surge on start up a 1000watt inverter should be OK. Keep the 12 volt leads as short and as fat as as possible as 42 amps at 12 volts is a lot of current whereas 2 amps at 240 volts is a very low current. 15 minutes of microwave cooking will take about 12 amp hours out of your leisure battery(ies) so make sure you have means of ensuring that you have enough capacity and the means to keep them (it) charged - specially if you rely on diesel powered heating at night as that too is power hungry. Link to comment Share on other sites More sharing options...
Philman Posted March 25, 2008 Share Posted March 25, 2008 Most domestic microwaves run at about 1100 watts input, say 800 watt output. So if you have a 500 watt microwave the input current is likely to be 900 or so so I wouldn't think a 1000 watt inverter would cope. You'd need lots of big batteries to run it. Phil. (lol) Link to comment Share on other sites More sharing options...
Den Posted March 25, 2008 Author Share Posted March 25, 2008 thankyou . idid buy a 600w by mistake.so look in the mmm under £500.that was a waste of money!!! thats where it'l be soon. Link to comment Share on other sites More sharing options...
Den Posted March 25, 2008 Author Share Posted March 25, 2008 hi philman i have 280amps batts efoy 1600 to go in new van and 150w solar panel and only run microwave 2 or 3 mins. Link to comment Share on other sites More sharing options...
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