Post by oldman on Oct 18, 2013 9:47:52 GMT 7
I am in the process of changing all the halogen bulbs in my house to LED lights. I have a lot of these halogen lights in the garden.
It is expensive to buy these in Singapore as they can cost upwards of $10 each. Buying directly from China is a lot cheaper and only cost around $2 each. However, the quality control may not be that stringent and one can expect one or two faulty bulbs. I opened one of these faulty bulbs that caused a trip in my electrical supply and found that the insulation around the wiring was not done properly and the live and neutral wires were close to each other without insulation and this resulted in a short circuit.
I feel that most of these bulbs come from China anyway and one might as well cut off the middleman. The downside can be contained as one can simply discard the faulty LED bulb and replace it with another one.
The savings on electricity can be quite substantial as each of these bulbs is rated at 3Watts and the halogen ones draw 35 Watts of power each. The amount of light given out is roughly the same. Hence, a lot of the energy consumed by the halogen bulbs is converted to heat. LED lights are generally cold to the touch.
Some numbers. 1 kWh cost about 26cts. A 3 Watt LED bulb running for 5 hours a day for 365 days will only cost $1.40 a year while a 35 Watt halogen bulb will cost $16 a year to run. Hence, it makes commercial sense to change the halogen bulb to an LED one especially if the price of the LED bulb is low.
Of course, LED bulbs are also more environmentally friendly given the significant savings on electricity and have a much longer lifespan of 10,000 hours each.
I will not be switching fluorescent lights for LED lights as the savings is really not that substantial. I think the power savings is in the region of 50% only.
www.aliexpress.com/item/Sharing-Lighting-FREE-SHIPPING-Shenzhen-Dimmable-non-dimmable-3W-CE-GU10-High-Power-LED-Lamp/359593709.html
It is expensive to buy these in Singapore as they can cost upwards of $10 each. Buying directly from China is a lot cheaper and only cost around $2 each. However, the quality control may not be that stringent and one can expect one or two faulty bulbs. I opened one of these faulty bulbs that caused a trip in my electrical supply and found that the insulation around the wiring was not done properly and the live and neutral wires were close to each other without insulation and this resulted in a short circuit.
I feel that most of these bulbs come from China anyway and one might as well cut off the middleman. The downside can be contained as one can simply discard the faulty LED bulb and replace it with another one.
The savings on electricity can be quite substantial as each of these bulbs is rated at 3Watts and the halogen ones draw 35 Watts of power each. The amount of light given out is roughly the same. Hence, a lot of the energy consumed by the halogen bulbs is converted to heat. LED lights are generally cold to the touch.
Some numbers. 1 kWh cost about 26cts. A 3 Watt LED bulb running for 5 hours a day for 365 days will only cost $1.40 a year while a 35 Watt halogen bulb will cost $16 a year to run. Hence, it makes commercial sense to change the halogen bulb to an LED one especially if the price of the LED bulb is low.
Of course, LED bulbs are also more environmentally friendly given the significant savings on electricity and have a much longer lifespan of 10,000 hours each.
I will not be switching fluorescent lights for LED lights as the savings is really not that substantial. I think the power savings is in the region of 50% only.
www.aliexpress.com/item/Sharing-Lighting-FREE-SHIPPING-Shenzhen-Dimmable-non-dimmable-3W-CE-GU10-High-Power-LED-Lamp/359593709.html
