Unless you are equipped with self-contained breathing apparatus (SCBA), you should avoid using fire extinguishers that displace the breathable oxygen, generate other asphyxiants or otherwise implicate your ability to breathe.
If you do not have SCBA and vapor-barrier protection (e.g., structural or aircraft firefighter turnout suit) and you should avoid using water-based extinguishers that can turn into 20,000 times more steam.
CO2
A carbon dioxide extinguisher (used on electrical installation fires) should not be used in a confined space, as the user could be overcome and be asphyxiated (deprived of air).
As long as the fixture in the confined space is approved for confined space and the wattage rating of the fixture is not below 60 watts then there should be no problem using a 60 watt bulb in this situation.
Confined space is an area that is enclosed. A dog kennel could be a confined space for a dog. A living room is a confined space for example.
You may have claustrophobia, which is a common fear of confined or enclosed spaces. This fear can be triggered by past traumatic experiences or feelings of being trapped and unable to escape. It is important to seek support from a mental health professional to learn coping strategies and ways to manage this fear.
the confined space program team (CSPT)
There is currently a sale on confined space gas detectors at pksafety. They have several models to choose from: http://www.pksafety.com/confined-space-gas-detectors.html
Carbon Dioxide extinguishers displace the air from the immediate area, and so are not suitable for confined spaces (though they're safe in a normal-sized room). Dry powder is non-toxic, but is discharged as a cloud of irritating dust, which can cause vision problems in a confined space. Generally, I would use the nearest extinguisher suitable for the fire, and vacate the area immediately after discahrge to wait for the fire service to check the area.
an authorized employee responsible for determining whether acceptable entry conditions are present in a confined space before authorizing entry; overseeing the confined space operation, and terminating the confined space entry
ensure that a qualified person evaluates and classifies the confined space
Confined space is an area which is enclosed with limited access which makes it a dangerous place to be in. Therefore, confined space rescue refers to techniques to save people whos been trapped in confined spaces.
pressure exerted by a vapor confined within a given space