Is not the problem there that, even if a DIYer were equipped and competent to undertake such tests, the insurer (or whoever) would probably not take a DIYer's test results very seriously. As I've suggested, I really doubt that, in relation to domestic premises, they would even try to 'understand' whether or not the equipment was safe - they would simply 'react' (or, maybe, 'not react') to someone volunteering that such 'DIY equipment' existed in the property.I think the only way to demonstrate to an isurer or anyone else that the equipment is safe will be to test to an appropriate BS EN; 60950 and 61010 would be a start, although there are some specialist standards for home automation equipment.
That all sounds eminently reasonable (and safe) to me (probably would still be, in terms of electrical safety, even without the opto-isolation).I normally try and use 10mm spacing between LV and ELV tracks. ... The opto isolation is to protect the micro-controller / processor from inductive spikes and other nasties as well as providing an increased current handling capability of the controller pin (100's mA rather than 10's mA). The contactor or relay would then be driven from the output of the opto.
Controller -(ELV 3.3/5v)-> Opto - (ELV 12/24v)-> Relay/Contactor -LV(110/240v)-> Appliance / device.
IIRC, apart from all the bits of bare copper all over the place and other 'interesting' features, one of BAS's main concerns about this is that CAT5e insulation is probably not rated for proximity to LV.Nice pic. At least they've used heatshrink on the wires. Beats some of the electrical tape (or worse, masking tape) bodges I've seen. Does it really cost that much to build it into an enclosure and actually route the wires sensibly
An essential skill these days:Sheds, want all the way. With luck, I can use the installs as a test platform for furthering development to a commercial product.
It's in an enclosure, that photo is from a DIY energy monitor project - those are the CTs added to the branch circuits in a US distribution board (CU).Does it really cost that much to build it into an enclosure and actually route the wires sensibly
The latter.The electrician who installed the dist board, or DJ Delorie ?
Yes.BTW - Did you fail to notice his instruction not to hotlink to images on his site ?
I always hot link. Mainly so the owner can remove if they wish. Should I find an image on a web site which the site did not have permission to use if they get told to remove it then it's auto removed from mine.He doesn't exactly take pride in his work, though.
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