Power inverter Shut off
Hoping someone can help me out here.I have a small inverter (400w)in my trailer that we basically use for the kids to watch some tv at bed time since the campground we are usually in doesn't allow a g...
Forum Discussion
98coachman wrote:
I would think you should be fine with the light switch to control the inverter, the contacts on a 110 volt switch are heavier than a 12 volt switch; so less resistance, I would think. I would try it for sure. Good luck and let us know how it works out.
Bill
That ISN'T how it works.
Many "110" volt rated switches are not rated to switch DC voltages and the ones that are rated to switch DC voltages ARE "derated" in voltage and amperage.
DC voltages can have a sustained arc over longer than AC (which is why DC welders are nicer to weld with than AC). This arc over can cause damage to the switch contacts or worse, fire.
You have to be careful when playing with DC voltages.
The OPs inverter is rated at 400W, at 13.2V that is 30A of current that the switch must be able to handle.
Standard household light switches are typically only rated for 15A or 20A at 120V AC, not DC voltages.. Do you see a problem with your advice?
OP has several options..
#1 live with it (IE leave on)
#2 spend money on a 12V high current switch
#3 Use a Bosch auto style relay (can find rated up to 40A for $2-$5) to setup a remote on/off
#4 buy a remote latching relay ($$$$)
#5 crack open the inverter and wire in a remote switch using the internal wiring from the built in switch
#6 Buy a better inverter which has remote on/off capability built in.
