Generator applications for running fans – A website Guide

Here is a website for working out generator applications….

To make it easier here’s my ‘unofficial’ guide based on my own experience on minimum requirement to operate fans.

Advise to start the fans one at a time.

1 x 1.5 blower = 3 to 4 kva

2 x 1.5 blower = 4 to 5 kva

3 x 1.5 blower = 5 to 6 kva

4 x 1.5 blower = 6 to 7 kva

5 x 1.5 blower = 7 to 8 kva

Official recommendations

Start Up 6KVA, Run 2KVA, Advised size Geni 7KVA, for 1 x 1.5 blower Start Up 6KVA, Run 3KVA, Advised size Geni 8KVA, for 2 x 1.5 blower Start Up 7KVA, Run 5KVA, Advised size Geni 8KVA, for 3 x 1.5 blower Start Up 8KVA, Run 6KVA, Advised size Geni 9KVA, for 4 x 1.5 blower Start Up 9KVA, Run 8KVA, Advised size Geni 10KVA, for 5 x 1.5 blower

Again for those who want more detail on the official specs and the calculator, try this web site:

(Information kindly supplied by VBLIH on the discussion forum of – sister site of the BIHA)

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