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QUOTE=jkarp;1594213]The dedicated small-appliance circuits in the kitchen have an exception. They can be run up to 100% for non-continuous loads. It's also important to realize 120v is rarely 120v. It's more common to see 110v due to resistive line losses. A dedicated small appliance circuit...

Look up din rail mounted circuit breaker

The problem I see pointing people to table 310.16 is that I would bet most people do not no how to use it, much less know anything about derating and correction factors. I could see someone looking at the table and not notice the * that points you to 240.4(D) which states that the maximum OCP...

Is this an attached or detached garage

For temporary use that is exceptable you just have to remember that the portable panel itself has no GF protection.

It is perfectly acceptable to feed a 60A load center with a 30A breaker. Edit: Good answer thisjrp4 I would just like to added that the OP idea should work fine. The 50A GFCI breaker would add GFCI protection but not over current protection (which is provided by the 30A breaker) so basically...

Now it makes a lot more sense.... BTW in the trades we call that a wiggy

A breaker is designed to instantaneously trip at 5X the rated current and may see upwards of 9kA for a fraction of a cycle, this is why branch circuit beakers are generally rated at 10kA. The point I was trying to make is that the method he was using to test the circuit is not going to tell...

In this case the magnetic trip would cause the trip not the thermal trip.....typical breakers have both Edit: Shorting a circuit to find an unlabeled circuit is common place in industry...it usually doesn't cause much if any physical damage unless of coarse you are using GE breakers....LOL

JFYI...any breaker would trip by doing this. Creating a ground fault like you did can produce an instantaneous fault current upwards of 9kA. Since a GFCI should trip around 5mA in order to protect life that experiment doesn't tell you much.

I don't think Virtuous realizes that a 120/240 volt GFCI breaker has a neutral connection built into the breaker.....so yes it does work as you stated.

There better be one since 250.32(a) requires it....;) I have never see this, I know it isn't a code requirement....they are normally connected through the Equipment grounding conductor. Sounds like a waste of copper to me.....

Glad you got her taken care of...I am extremely jealous...:mug:

Going the PLC route would be much more expensive, hell if you go with A-B or GE the software alone is crazy expensive. We have 6 ME hardware keys at work that cost a total of $30,000. When I finally get around to building something I will go the route of a PLC but I work for GE and use Machine...

You need a load to determine if you have a voltage drop....you can have a mile of wire and you will not see a voltage drop if there is no load because if you take a reading at the panel in the brew shed you are technically reading the voltage drop of an open circuit which will be the entire...

There really should be a grounding conductor that goes back to the main panel in addition to a ground rod...at least here in Wisconsin that is what is required. A ground rod is for lightning protection while a grounding conductor is for personal/ground fault protection, two very different...

That is why I asked...;) You need the conduit covered by 18" of soil Don't you have to pull a ground or do they still allow a detached structure without a grounding conductor in your area?

How deep is that trench?

You can not run the indicator lights in series with the load, they must be run in parallel.

You could probably get a way with a size 1 size since size 1 is good for 27A continuous and it is not a motor load. I would think not only would it be loud as hell and tear the crap out of the contacts from cycling on and off but I would also think that the repeated cycling would get the...