2
votes
1answer
76 views

Is it really energy economy to use movement sensor for turn lights on?

I want to install those movement sensors in my house in replacement for the old light switch. I want to use those from elevator halls which has a 3 way switch to leave on, leave off and leave ...
2
votes
2answers
249 views

What type of wiring should bedroom overhead lighting have?

On the phone with a friend in Cali this morning. He said that some municipalities are requiring /4 (12-3 or 14-3 romex) wiring for all new construction or rewiring for overhead lighting components. ...
8
votes
3answers
24k views

What's the difference between dimmable and non-dimmable LED lamps?

I have a large room in my house with 3 light fittings with a total of 10 40W GU10 bulbs. So, this is using 400W when they're at max output. (They're all on dimmer switches) I'm interesting in ...
6
votes
2answers
2k views

Why does using a dimmer with this ceiling fan and lights cause energy saving bulbs to flicker?

At a hotel I manage we purchased 34 ceiling fans with two integrated light sockets that operate on a dimmer all controlled by a remote control. Obviously using a dimmer with fluorescent bulbs won't ...
3
votes
5answers
5k views

What are my options for replacing 50W GU10 lightbulbs?

I've been looking at replacing 50W GU10 halogen lightbulbs for something more energy efficient. Some people say that LEDs cannot give you the same light (even 10W LEDs), and to use 11W CFL instead, ...