#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .
A 1450 watt coffee maker will use around 13 amps at 110 volts.
Electrical breakers are sized by the conductor that is connected to it. The conductor is sized by the current that is drawn by the circuit. The formula for amperage is I = W/E. Amps + Watts/Volts. 325/120 = 2.7 amps. A #14 copper conductor is rated at 15 amps. This is the minimum size wiring that is used for house circuits loads. The breaker for this size wiring will be a 15 amp breaker.
A 12 gauge wire can support a load of approximately 2200 watts.
1/2 watt (In theory you could use a "0.27 Watt" resistor, however there would be no safety factory and there is no standard value resistor that size.)
To answer this question a voltage is needed.
200 Watt Panel
To answer this question more information is needed. The wire size of the extention cord is needed.
A minimum of 15-amp breaker is "needed", but a 20-amp is often required by electrical code for that situation.
AWG # 10 wire on 30 amp circuit.
A 5500 watt gas powered generator typically requires a 30 amp breaker for a 240 volt connection. It is recommended to consult the manufacturer's specifications to ensure the correct breaker size for your specific generator model.
The formula which are needed for making of a single phase transformeri.e o/p voltage,watt,current,turn,core size,coil number,bobin size etc
A 15-watt fluorescent should produce about as much light as a 75-watt incandescent.
The size of the breakers depends on the voltage. According to the NFPA electrical standard (USA), if the two heaters you describe are "120 volt plug-in" then they are not allowed on the same circuit. Two circuits are needed. The largest general use circuit allowed for 120 volt receptacles is 20 amps and this will not handle your two appliances. An exception may exist if they are hard wired to a dedicated circuit, or if they are 240 volt.
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.
16 AWG is plenty large enough for a 50 or 100 watt lamp.
#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .