Dramatic Hammer wrote:It seemed rather large at the time but reading this I reckon the 40kva generator I hired for my wedding might have been more than a little overkill, even running toilets, bouncy castle and fridge trailer off it as well as sound! :bouncy:
Hard to tell, really. How big was the fridge?
Most generators are based on an electro-magnetic field winding. Especially the smaller ones. They need power to start producing output. That power comes from the battery. A 2 kW one will give you 2 kW; but no big current peaks allowed as they produce an avalanche effect because the field winding looses power.
Permanent magnet field generators do not need power to get going. They are bulkier, heavier and simpler. As such, they can easily support current peaks without even twitching.
For audio, it doesn't matter much as the current drawn is relatively constant. However, if you need to power electrical motors (or lights), you maybe want to look at permanent magnet types. Or you can get the electro-magnet type, but to run a 5 kW motor, you'll definitely need a 10 kW generator. Sometimes even more, depending on what the motor is driving and who's operating it.