Timeline for How can I pull single phase 120V from a 3 wire two phase 240V drop?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 26, 2020 at 2:53 | comment | added | Clifford Eby | Use of 10ga wire in a 50A circuit is a problem. Should be 8ga minimum. | |
| Apr 26, 2020 at 2:52 | comment | added | Clifford Eby | The 15A breaker in a sub-panel as described works fine. I don't understand why you have to GFIC ground to a neutral. Keep it separate. | |
| Apr 25, 2020 at 16:16 | comment | added | mnvelocitypilot | That's why I had the idea of a second ground rod. | |
| Apr 25, 2020 at 16:16 | comment | added | mnvelocitypilot | So, in theory, I'm protected. BUT, to do this, I'd have to run the 120V GFCI outlet ground and neutral BOTH to the 240V neutral.... making a connection between neutral and ground outside of the main panel (dangerous and wrong). That | |
| Apr 25, 2020 at 16:15 | comment | added | mnvelocitypilot | Thanks, Clifford - VERY helpful. I understand the issue with the potential ground loop created by two ground rods. What I was planning was to take one of the two 240 hot lines into a separate box with a 15 amp breaker, which then feeds a third box containing the 120V GFCI. The 10 gauge wire feeding the pool heater, which is protected by a 50A breaker. So, my thinking is/was, if the heater is on and drawing 40 amps, and I draw more than 10A via the 120V GFCI, I trip the 50A breaker. If the pool heater is off and I draw more than 15A from the GFCI outlet, I trip the 15A breaker. | |
| Apr 25, 2020 at 16:03 | history | answered | Clifford Eby | CC BY-SA 4.0 |