Technically speaking a bulb and a lamp are the same thing. You can use a 60 watt bulb in a fixture calling for a 40 watt bulb but I wouldn't. The lighting fixture may get to hot, melt and start a fire.
yes, going higher in wattage than recommended is bad as the socket may overheat.
Inadvisable.
The 60 watt socket will become very hot & may start a fire.
Stick with the recommended size bulb.
Usually the 60-watt limit is used to prevent the lampshade overheating, so a 75-watt bulb should not be used. But if more brightness is required, try a low-energy bulb because a 15-watt one gives the same light as a 75-watt incandescent (old-style) bulb. Or a 20-watt would be even brighter.
A 20 watt incandesent bulb is dim. For a medium sized room you need 100 watts. A 20 watt halogen bulb is brighter but still quite dim. These are marketed as low-energy but they are not. For a medium sized room you need 80 watts. A 20 watt fluorescent bulb can light a medium sized room quite brightly. This is a genuine low energy bulb.
Bulb brightness in LumensA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
A 20 watt CFL may fit into the 60-watt standard. But you should never fit one higher than the 60-watt, due to such a high fire hazard. It's not exactly the wattage but the heat coming from the bulb, so keep in mind not to go any higher than 60.
A little bit less than a 25 watt incandescent bulb - the the table below:Bulb brightnessA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
Light fittings should not be overloaded electrically because overheating can cause a fire. Alternatively you could use a 20 watt low-energy bulb.
Usually the 60-watt limit is used to prevent the lampshade overheating, so a 75-watt bulb should not be used. But if more brightness is required, try a low-energy bulb because a 15-watt one gives the same light as a 75-watt incandescent (old-style) bulb. Or a 20-watt would be even brighter.
A 20 watt incandesent bulb is dim. For a medium sized room you need 100 watts. A 20 watt halogen bulb is brighter but still quite dim. These are marketed as low-energy but they are not. For a medium sized room you need 80 watts. A 20 watt fluorescent bulb can light a medium sized room quite brightly. This is a genuine low energy bulb.
Bulb brightness in LumensA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
A 20 watt CFL may fit into the 60-watt standard. But you should never fit one higher than the 60-watt, due to such a high fire hazard. It's not exactly the wattage but the heat coming from the bulb, so keep in mind not to go any higher than 60.
If you can use it in your lamp it will be a 20 watt bulb
A little bit less than a 25 watt incandescent bulb - the the table below:Bulb brightnessA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
Approximately 15 lumens per watt for halogen, so 300 lumens.
An electrical watt is a measure of power. A 40 watt light bulb uses 40 watts of electrical power. It has a relative measure of twice the light output of a 20 watt bulb and one half the output of an 80 watt bulb. A 40 watt bulb uses 40 Joules of energy each second, or 40 watt-hours of energy each hour. In 1000 hours it uses 40 kilowatt-hours or Units of electrical energy.
Strictly the power in watts measures how much energy is used, while the brightness is measured in lumens. Bulb packaging should carry that information. But 'equivalents' are a useful way for manufacturers to bamboozle customers, so halogens often carry an 'equivalent wattage' figure, which means the power of an ordinary old incandescent bulb of the same brightness. If you had a 100 watt old-fashioned bulb, that is replaced by a 70 watt halogen. It could also be replace by a 20 watt CFL bulb that is obviously less expensive to run and lasts much longer.
Nobody has "240 watt mains". Perhaps you meant "240-volt mains".You would need to have a lighting or receptacle branch circuit, with over-current protection, in order to use any halogen bulb.However, if you have a 300 W bulb, it should work nicely in a 15-A or 20-A branch circuit.
It depends on how much you use the light, and how much power costs in your area. You can find out the second by looking at your electric bill... it'll give the cost per kWh (kilowatt-hour). The difference between a 40 watt bulb and a 60 watt bulb is 20 watts, meaning you'd have to leave the light on for about two days straight for the savings to be even one kilowatt-hour, and if it were on all the time in a year you'd save 180 kWh or so... almost certainly less than $20.