Changing Circuit Breaker

bycrackey wrote:

rgatijnet1 wrote:

dan-nickie wrote:
I would say unplug the RV ande turn generator off to be sure.

And turn off the inverter, which is still going to produce 120 volt power from the batteries.

Switching off the main breaker does turn off power to that breaker BUT, you have to remove the panel cover to pull the breaker. Once you pull the cover off of the panel, even with the main breaker turned off, there is still points that you can touch that have power. Better to stop power from getting into the panel than to trust that you will not touch anything that is hot with your hand or screw driver.

what points? are still live in the main panel once the 50amp main is turned off?I have never seen any 50 amp MH service that has power lines that bypass the input breaker.Not saying they don't but I have never seen one wired this way?
the only thing I could add would be shut off the "out" breakers to inverter if u have such a thing.My unit has breakers in and breakers out.

Since the question was being asked, I have to assume that the OP is NOT well versed in electrical power boxes. For that reason I prefer to err on the side of caution. I, myself, would turn off nothing other than the breaker I am changing, but I am used to working on live electrical components and boxes.
The facts are that at the top of the 50 amp circuit breaker, the bars that it plugs in to are live, even after the breaker is shut off. There is NOTHING by-passing that breaker but the portion of the box that brings in the power, and the input feed wires themselves, that come from the outside power panel, ARE STILL live since they come BEFORE the 50 amp breaker. Once you take off the front panel to change the breaker, the input wires, and what they hook in to, can kill you, even with the main panel 50 amp breaker off.

rgatijnet1 wrote:

dan-nickie wrote:
I would say unplug the RV ande turn generator off to be sure.

And turn off the inverter, which is still going to produce 120 volt power from the batteries.

Switching off the main breaker does turn off power to that breaker BUT, you have to remove the panel cover to pull the breaker. Once you pull the cover off of the panel, even with the main breaker turned off, there is still points that you can touch that have power. Better to stop power from getting into the panel than to trust that you will not touch anything that is hot with your hand or screw driver.

True but the chance of the Op touching the live area on the hot side of the 50amp breaker are very unlikely but its good to make him aware because as u said hes never done this sort of thing before

dan-nickie wrote:
I would say unplug the RV ande turn generator off to be sure.

And turn off the inverter, which is still going to produce 120 volt power from the batteries.

Switching off the main breaker does turn off power to that breaker BUT, you have to remove the panel cover to pull the breaker. Once you pull the cover off of the panel, even with the main breaker turned off, there is still points that you can touch that have power. Better to stop power from getting into the panel than to trust that you will not touch anything that is hot with your hand or screw driver.

revump wrote:
I have an 06 Alfa SeeYa. I am going to change #7 double throw in the left panel. It says that it is for the roof AC and Comp #2, but it also shuts off the charging cycle when it trips. It trips when we are on the generator or dry camping and we run the microwave or put anything heavy on the circuit. We are on shore power now. What do I need to shut off when I pull this circuit breaker?

just shut off the 50amp breaker that runs the panel it should be right in front of you when accessing the main panel to change the #7 15 amp one

I would say unplug the RV ande turn generator off to be sure.