Small GFI Breaker

[winnie]

The only thing that comes remotely close is a DIN Rail mount but would require a NEMA 3 box or enclosure to mount it in. They have them, and have used them to mount the gfi and control units for a fountain. I've seen them listed in the lower amperages but not sure of the fault rating if it is listed for personnel protection or equipment. Some likely will fit in a 4x6 box.

Do you have a pointer to a 6mA DIN mount breaker? I thought they all went with the 30 mA standard used in Europe.

I was thinking more along the lines of these https://www.grainger.com/product/2DH47 for mounting a single breaker. Similar are available for 'interchangable' breakers. But such wouldn't quite fit in a single device box.

Sounds like the OP has a winner simply swapping which box gets assigned to which task.

-Jon

 

[Todd0x1]

Nobody makes a free-mounted GFCI breaker, there is no need for it (other than your one-off situation).
To me the GFCI problem is easy to solve with a GFCI outlet, the issue you are challenged with is if the breaker trips. Since the circuit is no doubt protected by a real circuit breaker up stream, this 10A device is what we would call "supplemental" protection. Since that has no legal / code requirement, you could instead use a "Current Sensing Relay" inside of the shed set to 10A (or 6A or whatever) and then wire in a Reset button for it to the outside somewhere. it might not trip as fast as the upstream breaker if there is a short circuit event, but if that event is a short to ground, and anything on a 120V circuit would be, then the GFCI will pick it up most of the time. The CSR though would pick up an overload condition way before the breaker would see it.

As an example, you could get the "Latching" version of this

https://www.crmagnetics.com/Assets/ProductPDFs/CR4395%20Relay%20Box%20Sheet.pdf

When it trips, it stays tripped until power to the relay is cut. So your external reset would just be a NC push button on the outside somewhere that drops out control power to this relay.

Oh good idea. You could just use a electronic motor overload relay, Many of those can be set to auto reset.

 

[Jraef]

... (is there another place on the forum where I can accept a solution? - I will look but don't recall seeing one).

No, but thanks for closing it out for us. We have a tendency to discuss these sort of things to death if we don't know if it was resolved.

 

[Jraef]

Do you have a pointer to a 6mA DIN mount breaker? I thought they all went with the 30 mA standard used in Europe.

I was thinking more along the lines of these https://www.grainger.com/product/2DH47 for mounting a single breaker. Similar are available for 'interchangable' breakers. But such wouldn't quite fit in a single device box.

Sounds like the OP has a winner simply swapping which box gets assigned to which task.

-Jon

Yes you are correct. The IEC DIN rail breakers, although available as "RCD" or "RCBO" options that are generally the same as GFEP here, would be 30mA and therefore not be classified as a Class A "GFCI" here in North America (per the NEC).

 

[petersonra]

Reply to #11: No, see my #8 response.

Reply to #12: On the off-chance that both the 10-amp and the 15-amp trip, I can live with that. I do not expect that the small breaker will go first every time, just 99% (pick a number) of the time. If your "suggestion" were viable, I would, but again the neighbor has no shed access.

I would not have any expectation at all that the lower rated breaker trips first. If you look at the trip curves they are probably so close you can't tell them apart, especially for short circuits.