Safety of Running Coil in Garage

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Original poster: "Alan by way of Terry Fritz <teslalist-at-qwest-dot-net>" <centauri010-at-attbi-dot-com>

Hey,

I've finished my first coil and the sparks are adequate at best. I would 
like to experiment with it more, but currently I can only do it at night 
because I can't see the sparks during the day. I would like to run it in my 
garage but am worried about damaging the electronics in the house. What can 
I do to be safe in the garage or should I just not run it there? There is a 
garage door unit and a light close to where it would be running. Also, the 
family computer is directly behind the garage wall. So, there's not much 
physical distance between it and the coil(about 10-15ft). My second 
question is: how big should the sparks be from a coil powered by 2 
15kv/30ma transformers(15kv/60ma total)?
There are 11 primary turns, about 1400 secondary turns if i remember on a 
4.25" x 23" pvc secondary with 27awg wire with a .03 uf 35kv maxwell cap.

Thanks,
Alan