Thread: Maximum Lightbulb 60w

Originally Posted by qld

For example a 200w Bulb uses 200w of power but the heaters you see on the market usually use 400,800 and 1200 watts.

yeh but your 200 watt globe will be radiating probaly about 20 watts of visable light.

and of the remaining heat about 80 watts about 10% or less will be heating you.....the rest will be heating the walls, the cieling and by far the majority will be heating the air above the lamp... almost none of that heat will be warming the air in the room where it matters to you.

If you are going to be a scotchman with heating.... put on a jumper.

Ir by far more sensibly, invest in reverse cycle airconditioning.....by far the most economical and efficient form of electric heating........you can produce up to 6 times as much heat for the same amount of energy than you would by any form of resistive heating.


As for me.... I burn wood.....arround this place it falls out of the sky at the rate of about a tonne and a half a year.....then there are the scraps out of the workshop......if i didn't burn it... it would rot and produce methane....which is 4 times worse than the burning it.

if you want lots of heat fast.... you cant beat burning something.

cheers



you would be better warming yor self by a roaring candle.

So most the heat from a bulb comes straight out of the top of the glass? Not out to the sides?

Originally Posted by qld

For example a 200w Bulb uses 200w of power but the heaters you see on the market usually use 400,800 and 1200 watts.

Power = Voltage x Current

Watts = Volts x Amps

200 watts = 240 volts x 0.833amps. Thats the current your light bulb is drawing.

1200 watts = 240 volts x 5 amps. Thats the current your 1200 watt heater is drawing.

This is why the light circuits in your fuse box generally have lower rated circuit breakers than the circuit for your wall oven is on.

Heat is the issue. as Someone said most of what an incandescent globe produces is heat. We have a small loo with a batton style fitting driving a 60W bulb. if thats left on you can smell the socket and the ceiling, smells like p --Well it smells like you forgot to flush. Now Ive got one of those new globes in, which when sitting in there seems to offer you incouragement. It starts dull then just as you are ready to leave its at full brightness.

Originally Posted by qld

So most the heat from a bulb comes straight out of the top of the glass? Not out to the sides?

sorry that is not correct........a very large portion... all the radiated heat will be emitted over a 36o deg x 360 deg radiation pattern.....that is why you wont feel much of it.

the small portion you may feel comming out the top is that from heating the glass envelope because it is reasonably concentarted... it will be a relativly small portion... and it will go straight up and there fro be useless for personal or room heating.

take your 200 watt lamp... and a standard wax candle.... comare the heat comming off the top of both.

you'l be better warming yourself by a roaring candle.

cheers

Please correct if I'm wrong as I'm no electrician but it is/was my understanding that if you wanted to put a stronger light output into a 60W maximum rated socket then it is/was OK to use one of those new "efficient" light bulbs which , so called, give 100W output but only consume 18W. I was led to believe that as they run cooler that they were OK for a 60W rated socket.

Regards,
Bob

I got one bulb also hanging between my chair legs heating my ankles and another I clip to the desk in front of my and heat my legs.

The tiny size general electric bulbs come in sizes up to 100w. They are a smaller bulb so i assume the outside glass is relatively hotter but I suppose the smaller the glass is the more opportunity the heat has to escape into the general air rather than melting the plastic parts of my lights.

Awwww c'mon - this has got to be a wind-up !!

Originally Posted by Ian Smith

Awwww c'mon - this has got to be a wind-up !!

I think the heating up part could be someone having a go.

Seriously it works good.

Im really messy person so i cant use a regular heater or a candle because im always accidentally kicking stuff so the work light is good. The work light is cheap as well prices from around $9 at bunnings for the arlec one.

The best worklight with a regular bulb imo would be the $20 rubber kambrook I think they sell it at big W with the open lid.

Id say the chance of accidental fire is lower than with a regular heater because i leave the bulb in the open air to cool off and it does cool off very quickly.

I was going to get a lightbulb extension chandelier type thing for my touch lamp so i can hang a bulb next to my hip or shoulder rather than head high bulbs which i think might give me a headache.

This is the best bulb work lamp imo:

Trouble Finder Lamp
TF1

Made from tough moulded plastic
Accepts standard light globes
Plugs into an extension lead
60 watt globe max
RRP $19.95

With the 200w bulbs they also have much thicker pins that can break socket fitting.

Bob you answered your own question it consumes 18W of energy its not what the equivalent incandescent light is

In all seriousness........ a silly and probaly dangerous method of heating.

All items as described not designed for purpose and very probaly not fit for purpose.

I seriously hope you don't burn yourself and your house down.

cheers

How much heat comes out a 15w or 25w bulb.

Is it about the same proportion heat to numbers?