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nightjar

On 04/09/2014 16:10, Tim Watts wrote:
On 04/09/14 15:41, wrote:

Don't forget ventilation needed - vent through a metal tube to stop
fire spread. Food cans wired together perhaps?

I don't think that will be a problem with maybe 1 PSU per cabinet -
should be able to lose heat by conduction.

But if it were, and intumescent vent is probably what I'd go for (self
seals in a fire)....

Use the Davy lamp principle and fit a fine mesh over the vent.

--
Colin Bignell