If the overcurrent protection device is 40 Amps, then a 30-Amp plug can overheat and catch fire at 40 Amps before the circuit-breaker blows.
A plug and play 15v amp circuit is one that you can simply plug in. It has a three pronged plug so no special wiring is needed.
For a continuous load the circuit breaker is set 25% higher than the load current. So a 20-amp breaker is used with a continuous 16-amp load.
30 amps
No.
No, because if you switch a 50-amp load on, it will blow a 40-amp circuit breaker if the load exceeds 40 amps, which is likely.
No. A 120 volt 15 amp service will handle a maximum of 1,800 watts. Even a 20 amp service will only handle 2400 watts and that is at max load which you should never load on a 20 amp circuit. You will need a 30 amp 120 volt or 240 volt service for 2400 watts.
The amperage on a circuit is governed by the connected load. If a load changes its current draw it can be detected by an amp meter connected to the circuit.
A plug and play 15v amp circuit is one that you can simply plug in. It has a three pronged plug so no special wiring is needed.
You can plug in as many as you want but none of them will work. An "open" circuit is an electrical circuit which is not a complete circuit and therefore electricity will not flow through it. If you mean an unused circuit,which has no load on it, then the answer is 2 ea. 5 amp devices on a 15 amp circuit and 3 ea. 5 amp devices on a 20 amp circuit. The reason for this is that any circuit is not to be "loaded" more than 80% of the OCPD (circuit breaker amperage rating.
For a continuous load the circuit breaker is set 25% higher than the load current. So a 20-amp breaker is used with a continuous 16-amp load.
15 amp outlet on a 20 amp circuit.
30 amps
The higher the ampacity of a circuit, the greater the load can be that is applied to that circuit.
No.
If you want to run both coils,you have to wire the positive to positive and negative to negative on your sub,then run a wire from each plug to the amp. Positive to the positive side of the amp and negative to negative side of the amp,(you can run in bridge mode or stereo if your amp can handle the load)
No, because if you switch a 50-amp load on, it will blow a 40-amp circuit breaker if the load exceeds 40 amps, which is likely.
No. 20 amps at 120 volts will handle a maximum of 2400 watts. And you should never continuously load a 20 amp 120 volt circuit to no more than 1920 watts.