In , AZ Nomad wrote:
On Wed, 3 Jun 2009 22:08:23 +0000 (UTC), Don Klipstein wrote:
In article , AZ
Nomad wrote:

SNIP to here

Unless they are dangerous junk, they shouldn't do a thing even if touching
the bulb while the bulb is in an insulated blanket. The bulb should
blow out before the sleaves do anything.

SNIP

There are incandescent bulbs that normally get hot enough to char stuff.

For example, the top of a 100 watt incandescent in free air can achieve
about 420-445 degrees F. A 60 watt one can achieve about 390 F at the top
of the bulb - in free air. In enclosures, lightbulbs get evn hotter.

Yes, but fixture materials can take the heat unless they are absolute
rubbish.

There is rubbish out there where things out of alignment due to being
loose can make things too hot.

I see all too much rubbish in general sold for home lighting. I have
even seen a banker's lamp style desk lamp produce a burning odor from
charring wiring while being used as directed with nothing out of place.
(Apparently tested where line voltage is 230V and 60W version of that
shape/size/style bulb usually has a vacuum, while in USA the 60 watt
version of that bulb is usually gas-filled.)

- Don Klipstein )