The heater + anything else, is drawing to much power,  for your system. 

Your  heater at 2.3 kw  is already using 10.87 amps.  With the usual fridge, lights, pumps and caravan heater, water heater, television  etc.you are probably over your maximum.  Our caravan is about 16 amps ( I  think  ) 

Here is a previous post from Bob61 that you may find useful although it actually is about tripping the site electrics

Quote:    At 230v which the following conversion table seems to use, a 2000w (2kw) heater draws 8.70 amps. You may just about get by adding very low power things like a light, laptop, phone charger etc; as I believe there may be some tolerance as to if and when the fuses trip.

I, like others, have heard stories of campsites being blacked out by someone misusing or overloading the electrical supply but as the OP suggests we very rarely hear from anyone who has actually done it.

The figures I always follow though are the ones in the below table based on a 230 volt supply. 

WATTS TO AMPS CONVERSION

60 Watts    =  0.26 Amp

100 Watts    =    0.43 Amp

200 Watts    =    0.87 Amp

300 Watts    =    1.30 Amp

400 Watts    =    1.74 Amp

500 Watts    =    2.17 Amp

600 Watts    =    2.61 Amp

700 Watts    =    3.04 Amp

800 Watts    =    3.48 Amp

900 Watts    =    3.91 Amp

1000 Watts    =    4.35 Amp

1100 Watts    =    4.78 Amp

1200 Watts    =    5.22 Amp

1300 Watts    =    5.65 Amp

1400 Watts    =    6.09 Amp

1500 Watts    =    6.52 Amp

1600 Watts    =    6.96 Amp

1700 Watts    =    7.39 Amp

1800 Watts    =    7.83 Amp

1900 Watts    =    8.26 Amp

2000 Watts    =    8.70 Amp

2100 Watts    =    9.13 Amp

2200 Watts    =    9.57 Amp

2300 Watts    =    10.00 Amp

2400 Watts    =    10.43 Amp

2500 Watts    =    10.87 Amp

2600 Watts    =   11.30 Amp

2700 Watts    =   11.74 Amp

2800 Watts    =    12.17Amp

2900 Watts    =   12.61 Amp

3000 Watts    =    13.04 Amp

3100 Watts    =    13.48 Amp

3200 Watts    =    13.91 Amp

3300 Watts    =    14.35 Amp

3400 Watts    =    14.78 Amp

3500 Watts    =    15.22Amp

 

If you are using a 2300w heater then you will just about manage to keep it going on a 10amp supply but it is always better to leave a little spare. I would suggest therefore that a 2000w heater would be more suitable.

I originally had a convector heater and found it really struggled to heat the mass of cold air in my tent. I suspect this is because it doesn't draw cold air through, heat it, and 'convect' it fast enough. A fan heater is much better because it sucks the air in and blows it out so is that much more proficient in circulating the warm air.

My fan heater is 2000w and I have had no trouble with it, however, if I switch the electric kettle on I switch the heater off for the time it takes to boil the kettle (about 4 minutes). Likewise with any other high wattage items.

hi, thanks, I think I will have to put it down to bad investment and get a blow heater.

thanks.

Quote: Originally posted by kasbas on 11/9/2011

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hi, thanks, I think I will have to put it down to bad investment and get a blow heater.

thanks.

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Yes...I now use mine to supplement the economy 7 storage heaters at home