The RV has a 12 Volt DC power supply that operates all the 12 Volt DC items in your RV when your plugged in to 110 V AC.
No, the voltage rating of the switch is too low.
Use a DPST - A two pole switch.
I believe you'd have to use a standard set of three way switches and a contactor. Tie the 120 volt coil to the three way switches and the 220 volt contactor to the load.Unless your talking about a 277 volt load, then you can use 277 volt switches.Use a relayYou're probably better off trying to wire a separate 3-way switch circuit (at 110 or even 24 vAC) to control a heavy-duty relay that operates the 220-volt device.
Yes and you will have a spare terminal for future use
If you mean 110/240, yes, but there may be a hidden switch to switch it to 240 volt mode. Check the manual.
It's possible, but not at all economic. Usually the 240V (sure it's not 277?) has been stepped down from 480V service already. Sounds like this is a commercial application. 480 is rare in residential, but quite common in commercial. If you need 480, you'll need to get ahead of the step down transformer.AnswerYou cannot obtain a three-phase supply from a single-phase supply.
Yes, as long as it is simply an on off switch. The switch only opens and closes a contact point.
Yes, the switch is limited to 126 v so should be ok for 6 v. Switches are also rated for maximum current so you need to be sure that it is not overloaded.
No, you cannot use a 10 amp switch to open a window in a 12 volt DC system. This is because the switch would not be able to handle the current necessary to power the window motor. The amount of current required to open a window in a 12 volt DC system is typically much higher than 10 amps, and so the switch would not be able to cope with the load. In addition, the switch would not be able to sustain the current necessary to keep the window open, which could lead to the window becoming stuck in the open position. Furthermore, the switch would not be able to handle the circuit protection requirements necessary to keep the window safe. For these reasons, it is not recommended to use a 10 amp switch to open a window in a 12 volt DC system.
im have a 30 kva transformer 3 phase 480v 80 amp panel 120v what size disconnect should I use
The conscience is no. There is a work about by using an intermediary relay coil rated at 120 volts to switch the 240 volt feeder line.
Use a volt meter to measure the voltage to neutral on each side of the switch. By turning the switch on and off and monitoring the voltage on one side and then the other, you can determine the supply and load side of the switch.