Quizzes & Puzzles25 mins ago
Dimmer Switch Keeps Failing
8 Answers
Normal consumer unit with 5 Amp rewirable fuse for lighting circuit. Living room lighting 5 x 60W candle lamps. 400W Dimmer Switch stops dimming within a year, just remains on full bright. Tried two so far.................
Recently purchased (but not fitted yet) 1000W Dimmer Switch. Will this solve the problem?
Cannot find any rating in between.
Recently purchased (but not fitted yet) 1000W Dimmer Switch. Will this solve the problem?
Cannot find any rating in between.
Answers
Although the notional total load of the 5 bulbs is 300W, the low resistance of each incandescent bulb (at low filament temperature) is causing a current draw greater than that which would be drawn by a single 300W bulb (for the same overall brightness). This would be particularly so at very low light output levels. A 1,000W dimmer should be adequately rated...
18:20 Mon 20th May 2013
Although the notional total load of the 5 bulbs is 300W, the low resistance of each incandescent bulb (at low filament temperature) is causing a current draw greater than that which would be drawn by a single 300W bulb (for the same overall brightness). This would be particularly so at very low light output levels.
A 1,000W dimmer should be adequately rated for this additional current.
It would do no harm to fit one of these (between Live and Neutral), to minimise mains spikes entering the unit.
http:// www.map lin.co. uk/tran sient-s uppress or-mov- 499#spe cificat ion
A 1,000W dimmer should be adequately rated for this additional current.
It would do no harm to fit one of these (between Live and Neutral), to minimise mains spikes entering the unit.
http://
When you purchase an expensive mains supression extension lead, the above Maplin component is the type of protection provided.
I have modified a number of direct plug-in neon nightlights with such a component - fitted Live to Neutral, and have them permanently plugged in throughout my property.
It is not advisable to connect this type of component between Earth and Live or Neutral.
I have modified a number of direct plug-in neon nightlights with such a component - fitted Live to Neutral, and have them permanently plugged in throughout my property.
It is not advisable to connect this type of component between Earth and Live or Neutral.
After looking at the Maplin website, it appears that you are looking at suppressor diodes, placing one of these across the mains will blow a fuse.
This is what you need from Maplin:-
http:// www.map lin.co. uk/tran sient-s uppress or-mov- 499#ove rview
Just connect it across the incoming Live & Neutral terminals of the dimmer switch, to give maximum protection – you may need to sleeve the component legs if the Live & Neutral terminals are spaced apart.
This is what you need from Maplin:-
http://
Just connect it across the incoming Live & Neutral terminals of the dimmer switch, to give maximum protection – you may need to sleeve the component legs if the Live & Neutral terminals are spaced apart.
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