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Posted by Rick Merrill on 06/07/07 13:42
Bernie Dwyer wrote:
> Hi - are there any sparkies (electricians) here?
>
> I'm shooting some rainforest scenes in a couple of weeks and I will need
> suitable lighting.
>
> I've worked out the loads and want to confirm that I'm hiring a suitable
> 3-phase generator. Here's the details:
>
> All voltages are Australian, i.e. 240VAC, 50Hz. All calculations rounded
> up for a safety margin.
>
> Phase 1: unit/makeup. Small lights, airbrush compressors, hot water jug,
> etc. Total 14 amps
>
> Phase 2: lights on set, total 29 amps
>
> Phase 3: lights on set, camera power, field monitor, smoke machine, etc.
> Total 30 amps
>
> By my calculations, this comes to 17.52 KW of mostly resistive load, so
> no power factor to worry about.
>
> I can get a 20KVa generator for a reasonable price, and this would seem
> to fit the bill. 17.52 KW shouldn't stress a 20KVa generator. I want to
> leave a bit of a reserve. The next one up is a 60KVa generator, and it
> costs a lot more.
>
> Any opinions?
>
> (duh, this is the interweb, there'll be opinions, count on it:-)
>
You'll have to put the generator a LONG way (1000 feet?) away because
those suckers can be noisy!
Is all your equipment rated for 50 Hz?
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