I would use no more 14 100watt bulbs on a 15 amp circuit or 19 bulbs on a 20 amp circuit. You can calculate this by taking 80% of circuit amperage I.E 12 amps or 16 amps and then multiply by circuit voltage(120) to get 1440 watts and 1920 watts. Then take these values divided by bulb wattage(100 watts) to get 14.4 bulbs and 19.2 bulbs. Then round down for partial bulbs to get 14 bulbs and 19 bulbs.
Depends on wattage of each bulb. Multiply the wattage of a bulb by 100. Guess is between 1 and 3 watts per bulb.
To power ten 12 volt 10 watt lights, you would need a transformer with a total output of at least 120 volts and 100 watts.
100
Fuses or breakers are used to protect the conductor to the load. A #14 wire conductor is rated for 15 amps. Most home circuitry is done with #14 wire. The minimum size breaker in an electrical panel is 15 amp so it looks like a 15 amp fuse or breaker can be used for a 100 watt light bulb.
15,000 watts at 240 volts will use 62.5 amps. Therefore you will need to use AWG #3 wire on a 100 amp breaker.
100VA
about 4800 watt but should not use it 100% so to be safe 4000 watt (80%)
I really need more detailed information to answer your question. How many lights were added and what wattage bulbs are being used? For a 15-amp breaker, the maximum wattage it would handle would be around 1650 watts. This would be about 16 100-watt bulbs. Does your breaker trip immediately when you turn the light switch on? If you have an ohmmeter you can check the tripped breaker. Put one lead on the black "hot" wire coming from the breaker. Remember, the breaker must be off. Then put the other lead on the ground bar. If the ohm reading is very low, close to 2 ohms, then you have a direct short to ground somewhere in your wiring.
To power ten 12 volt 10 watt lights, you would need a transformer with a total output of at least 120 volts and 100 watts.
100
15,000 watts at 240 volts will use 62.5 amps. Therefore you will need to use AWG #3 wire on a 100 amp breaker.
Fuses or breakers are used to protect the conductor to the load. A #14 wire conductor is rated for 15 amps. Most home circuitry is done with #14 wire. The minimum size breaker in an electrical panel is 15 amp so it looks like a 15 amp fuse or breaker can be used for a 100 watt light bulb.
100VA
The electrical code states that circuit conductors that are fed by this breaker on a continuous load can only be loaded to 80%. Therefore you can have a load of 1,920 watts on this circuit. Assuming you install 8 watt bulbs you can have 240 on this circuit.
A 1,000 watt is 15,000 lumens. A 100 watt bulb is 1,500 lumens.
100 Joules = 100 watt second = energy1 joule = 1 watt second
See discuss Question below
100 hp is 0.0735 MW