No... The power supply is simply a battery in the back of the laptop. But if you use a Desktop it is like any other power source.
The ocz 1kw pro xstream is considered the most efficient pwer supply.
Pwer
No. The 240V lamp will pop the circuit or fuse because the draw is higher than the supply.
In the USA (110 voly supply) you should fit a 5 amp fuse. In Britain or Europe (230 volt supply) you should fit a 3 amp fuse.
The answer is 1
im doing pwer point
That depends on your car. You should check the manual. If it's not explicitly mentioned, you should check in the manual which fuse belongs to the accessory supply and then check the rating of that fuse in the fuse box.
main circuit started with electricity supply flowing through the service fuse
The fuse rating should be 5 amps
Very unlikely. When a power supply "blows", a fuse is destroyed in the power supply. This is what the fuse was designed for. When a high voltage comes through, the fuse will burn out to prevent the surge from reaching the rest of the electronics. A surge protector does the same thing, but is better at catching voltage spikes than the power supply.
49 factors.
The fuse is rated to protect the equipment, the supply, and you. Change the fuse for a higher rating and you compromise your safety and equipment and supply safety; increasing the risk of electric shock and of fire.