On 30 Jul, 2007, at 3:05 PM, Ted Coffey wrote:
> When it comes to lightning there is a risk no matter what you do. ...
> ... but lightning can still strike and the path is somewhat
> uncertain...
And even if the path of the bolt is away from your gear, there's often
enough
voltage induced in wiring of all kinds to blow junctions.
A couple of years ago I went to a talk by Bill Whitlock, President of
Jensen Transformers
and he touched on lightning protection. The thing he said that stuck
with me was that
lightning didn't like to turn sharp corners. So locate your lightning
grounds with a straight
path to earth or with sweeping large radius turns and make your
signal/data tap at right
angles to the ground path.
> The best protection is to physically disconnect the microphone cables
> whenever lightning nearby or you are not monitoring. The unconnected
> cable must not provide a path to ground.
If you can't disconnect, I suppose the safest thing would be to have
expendable mics,
pre and ADC and run the signal to your expensive inside gear with
optical cable.
-- Mike
|