30 amp =

[Metaphor_7182]

The RT electrical is 30 amps. So plugging it in to the 110V at the house it is pulling how many watts with nothing pulled from the house electrical to the vehicle (microwave, clock, radio, etc.)? 🙂
Got the answer, but needing a back check on my math.

[Metaphor_7182]

Got the RT a year back. A 97 on a 96 Dodge chassis. A bit of a hybrid, several electrical mods (NO documentation on it) with a solar upgrade that uses a MARK 15 Controller.

The question had to do with the shore power consumption (power draw in watts) when the coach is plugged in at the house. When plugged this past winter the electric bill increased, not sure why the converter would cause that increase when nothing was plugged in to draw power, other than the detectors (smoke, gas ect.), possibility the trickle charger?; my calc.

30A * 110V = 3300W and 80% safe usage is 2640W but this still did not explain power use.

Best reply. http://rvservices.koa.com/rvinformation/rvmaintenance/rv-converters-and-amp-draw.asp Great info here.

Followed by: “Go buy a KillAWatt which will measure how much power a device uses. Plug it into your house and then your mh into the KillAWatt. It will show you how much power you mh is using just sitting there. You can then turn on each appliance and determine its load.”

Got one, now will start disconnecting / reconnecting the mods one at a time to find the power hog.

Upshot, most times the simplest answers is the better option. Thx guys.

Truly a few replies were a Metaphor to the initial question.

[mumkin]

Fastpaddler wrote:
I can confirm one thing friends: If you plug your 30amp power cable, with 15 amp adaptor on end into your 110v house power, do NOT try running your aircon unless you have a 20amp circuit breaker--quite often the 15amp ones trip the breaker because most of those aircons need 20amps to run for a while. Some people do manage but it is more luck than brains!!!

If my unit is plugged into 15 amps, the AC has worked for me... just don't try to use the fridge too. That said, if the heat pump goes on heat, it snaps the circuit every time. Both AC and heat work OK on 20 amps (but again... I have to put my fridge on gas or the hard-wired voltage regulator doesn't like it... keeps telling me low voltage)

I too am wondering what the actual question is here.

[ol__grouch]

Fastpaddler wrote:
I can confirm one thing friends: If you plug your 30amp power cable, with 15 amp adaptor on end into your 110v house power, do NOT try running your aircon unless you have a 20amp circuit breaker--quite often the 15amp ones trip the breaker because most of those aircons need 20amps to run for a while. Some people do manage but it is more luck than brains!!!

The roof a/c on my unit works just fine with a cord from the garage. It's a 15 amp breaker. Lightning took my central air out so I've been running the RV to keep cool. I've actually had to cut it back as it got too cold inside. I even have the TV (minimal draw on that one) plugged in.

[Fastpaddler]

I can confirm one thing friends: If you plug your 30amp power cable, with 15 amp adaptor on end into your 110v house power, do NOT try running your aircon unless you have a 20amp circuit breaker--quite often the 15amp ones trip the breaker because most of those aircons need 20amps to run for a while. Some people do manage but it is more luck than brains!!!

[Old-Biscuit]

Post your calculations and we will evaluate them.......:B

[jjson775]

Here is a good practical article on this subject
http://rvservices.koa.com/rvinformation/rvmaintenance/rv-converters-and-amp-draw.asp

[2oldman]

VintageRacer wrote:
I have no idea what is being asked here.

Maybe it's a Metaphor. 🙂

[hmknightnc]

Not a clue what you are asking. The power draw is absolutely and only dependent on the equipment running in the RV. Has absolutely nothing to due with what type 110volt circuit you plugged into up until you trip the breaker for over.

Exactly what did you calculate?

[bob_nestor]

Not sure if this is the answer you're looking for, but when I connect up my Roadtrek 210P with nothing running in it I see a 2-3amp draw. This is when the batteries are fully charged, when they're down a bit the draw goes up to about 10amp.

[wildtoad]

Go buy a KillAWatt which will measure how much power a device uses. Plug it into your house and then your mh into the KillAWatt. It will show you how much power you mh is using just sitting there. You can then turn on each appliance and determine its load.

[VintageRacer]

This was, for the record, the most uninterpretable question I have ever read. I have no idea what is being asked here. I probably know the answer, being well versed in electronics and electricity but....

Brian

[2oldman]

Metaphor 7182 wrote:
.. with nothing pulled from the house electrical to the vehicle (microwave, clock, radio, etc.)?

If nothing is "pulled" it is near zero. Is that what you mean?

[CA_Traveler]

The maximum is 120x20=2,400W for 20A plug.
120x30=3,600W for a 30A plug.
2x120x50=12,000W for a 50A plug.

[bigdogger]

The microwave is only going to be pulling amperage when it is cooking something. Otherwise the clock on it is going to pull a fraction of a fraction of an amp. If everything but the microwave clock and the light on the radio are off, I would guess you are pulling way less than 1/10 of an amp. But you are probably forgetting many other loads that come on when you plug in. Things like the battery charger, the converter, maybe the fridge etc. What exactly are you trying to figure out?