Do I need a generator? and are they all the same?
I have come to a stage where I may need a 20/22kva generator.
background:
I have 63amp 3 phase supply
existing worse case loading:
18.6kw (sander) + 7.5kw (Compressor) + 4kw (Extractor) = roughly 55.2amp
the problem I have is that the extractor is underpowered, the sander requries extraction of 6300 m3/hr, to get an extractor capable handling this kind of extraction demand I need a small commercial system which possibly sits between 7.5kw - 11kw
I am thinking to put the compressor on the generator as the compressor needs to sit outside the shed anyway, the generator is on star-delta.
thoughts and comments?
If I proceed to buy a generator, are they all the same? (apart from cheaper ones has smaller tank and other bell and whistles) I've got quoted from $10k NZD to $20k NZD for a 20kva unit