Timeline for Can the neutral for a spa circuit be tied to either the neutral on a return leg or ground?
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7 events
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| Mar 18, 2021 at 8:17 | comment | added | Harper - Reinstate Monica | @akshue they have to be in the same circuit. You can treat safety ground like a generic common return busplane that everything goes back to. Can't do that with neutral because it carries normal service current. note that neutrals do NOT have breakers. | |
| Mar 17, 2021 at 0:08 | comment | added | Akshue | Yes, conduit... this would be 1”, 24” down. Makes sense that they have to be in the same conduit, I guess. Will simply mount the disconnect inside the house and run the 3 wires for 240+gnd to the heater. | |
| Mar 16, 2021 at 23:40 | comment | added | Ed Beal | The wire has to be in the same cable or conduit, the 17 code allows adding a separate ground but using a neutral from another circuit would violate several code articles other than the same cable. A pool heater is different than a heat pump and as of the 2020 code even heat pumps per 210.8.A all 125v through 250v receptacles require GFCI so now even a welding outlet or oven in the kitchen even require GFCI. pool equipment in article 680 even hardwired motors when replaced require GFCI protection electric heaters and 120v receptacles have required GFCI within 20’ | |
| Mar 16, 2021 at 23:34 | comment | added | ThreePhaseEel | @Akshue -- are these wiring runs in cable or conduit? | |
| Mar 16, 2021 at 22:45 | comment | added | Akshue | Thanks for the info. I’ll plan on adding the GFCI in the basement as basically a sub panel. (Feel kind of silly - with a heat pump, it’s not required via NEC)... out of curiosity - why can I not use the neutral from one of the other circuits nearby? The 240 has no neutral - the only reason to add a neutral is to power the monitoring stuff of the GFI. | |
| Mar 16, 2021 at 19:27 | history | edited | Ed Beal | CC BY-SA 4.0 |
added 138 characters in body
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| Mar 16, 2021 at 19:12 | history | answered | Ed Beal | CC BY-SA 4.0 |