Thor Forums

[gmtech16450yz]

Originally Posted by Skip 500

That will not harm the 30 amp system?

Electricity is often easily understood if you use water analogies.

Amperage is the same as water FLOW, not pressure. So what you're talking about doing is similar to dumping a 1 gallon bucket of water over somebodies head or a 5 gallon bucket of water over their head. Neither one will "harm" them.

The difference would be if the VOLTAGE or pressure was different. If you were trying to hook your 30 amp 110v motorhome to a 30 amp 220v outlet, that would be like spraying somebody with water out of a pressure washer. Whether you used 1 gallon or 5, it's the pressure that would hurt them.

Plugging into 50 amp service would simply mean the supply is capable of delivering AND is protected up to 50 amps. Your motorhome should still be protected up to 30 amps so you'd simply have more available "flow" than you'd need or be able to use. If you used more than 30 amps, your breakers in your motorhome would (should) trip before the 50 amp outlet would.

Another comparison is simply your onboard water supply vs. city water supply. You use a pressure regulator to make sure the pressure (voltage) isn't too high when hooking onto an outside water source. The amount of water flow (amperage) or the amount of supply behind that water doesn't matter, you're only going to use what you can use.

Make sense?

And when it comes to electricity, there absolutely are no stupid questions!