I know this isn't a wiring regs question but does anyone know how to undertake the design calculations for a faraday cage to Min Spec >80dB attenuation 20kHz – 200MHz
ISO containers are a bit smaller than that - more like 2.5m by 2.5 by 6, rather less inside, and at least one I am 'aware of' ended up with big holes cut to put things in and then being welded up and repainted afterwards, due to a "£$"%% up, (or a dimensional miscalculation in the language of the final report) with the relationship of size of the equipment to the door aperture.
They do need a bit of rework to make them into decent screened boxes, but are a jolly solid starting point in terms of rigidity, and ease of planting them on-site..
ISO containers are a bit smaller than that - more like 2.5m by 2.5 by 6, rather less inside, and at least one I am 'aware of' ended up with big holes cut to put things in and then being welded up and repainted afterwards, due to a "£$"%% up, (or a dimensional miscalculation in the language of the final report) with the relationship of size of the equipment to the door aperture.
They do need a bit of rework to make them into decent screened boxes, but are a jolly solid starting point in terms of rigidity, and ease of planting them on-site..
