I found something today while doing a PIR that I have not encountered before. The kitchen extract fan would come on only when the hob/oven, toaster were switched on or the cooker hood extract was on the third setting which is full speed. Any ideas?
Clever extract fan
- Thread starter VanSolo
- Start date
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Some sort of load sensing relay(s) on the relevant circuits ?
So, hob, oven, toaster and cooker hood all on one circuit?
J
Johnmelad502
Not what he said...
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Got it in one Ricicle! That wasn't much of a quiz was it?
Very good idea and so simple. Threw me for a while though.
Very good idea and so simple. Threw me for a while though.
Really? Sounds a lot more hassle and less simple than just switching the fan on manually when you want/need it. Not that I don't like the idea. I like overly complicated things.
Designed for student accommodation. Need I say more?
Very easily installed, Not too complicated at all. Just send the phase conductors of the circuits concerned through the ct on the relay.
Very easily installed, Not too complicated at all. Just send the phase conductors of the circuits concerned through the ct on the relay.
Fine until you install a multi RCD/RCBO board....
Or did I miss the point?
Or did I miss the point?
Presumably to stop them setting off the fire alarm by being too lazy to put the fan on while cooking?
You'd like my bathroom fan arrangement then.
That's what I reckon.
TTC they are 3 phase Dbs with a combination of mcbs and rcbos. The installation is all in surface trunking.
Not to hijack the original thread, but I'm intrigued...
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I installed a system which would not allow the machine to operate unless the extractor fan was running.
The device had a current transformer so I could have feed many circuits through same current transformer and there would be no electrical connection between circuits.
The device had a current transformer so I could have feed many circuits through same current transformer and there would be no electrical connection between circuits.
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