Technically there is infinite resistance across the outputs of the ballast. so it wouldn't see a load.
But a major concern is that there is a potential voltage there. A LOT. With a fair bit of current there as well. If someone of something happened to connect across two of those connectors on the output. You would have a BIG boom and possible fire.
The same goes for if you just take the bulb out of the socket.
It wouldn't damage the ballast as far as I can see(without looking at the design) but there is a hazard there I would not take personally.
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Darren
Always strive for the optimum environment, not the minimum environment
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