Timeline for If AC is alternating (+120v) - (-120v) then why we don't get shock by touching neutral wire
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Oct 4 at 20:21 | comment | added | user317139 | @Justme & Tom Carpenter: Uh you’re right. Please apologise I mix something here … | |
| Oct 4 at 20:13 | comment | added | Tom Carpenter | @Burglups RMS = Peak/sqrt(2) = Peak-Peak/(2*sqrt(2)). So +/-170 is correct | |
| Oct 4 at 20:13 | comment | added | Justme | @Burglups That is incorrect. Please look up how RMS works for sine waves from e.g. Wikipedia. A sine wave that has peaks of +85V and -85V cannot possibly match equivalent of 120VDC, but a sine wave of 170V amplitude will match equivalent of 120VDC. | |
| Oct 4 at 20:09 | comment | added | user317139 | If it is 120VAC RMS then it alternates around neutral between +85V and -85V. | |
| Oct 4 at 19:56 | comment | added | Justme | @SolarMike Of course but under normal conditions and in ideal conditions for understanding neutral wire and assuming no faults or errors made in installing, it can be assumed it's 0V. Sure with high load and long wires it might wiggle at few VAC compared to 0V. Otherwise, we might just say both live and neutral are 120 VAC in Europe and they both shock you. But they aren't. | |
| Oct 4 at 19:53 | history | edited | Justme | CC BY-SA 4.0 |
added 18 characters in body
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| Oct 4 at 19:47 | comment | added | Solar Mike | Neutral is not always 0, you can get a shock if other appliances are in use and you provide a viable path for current to flow. | |
| Oct 4 at 19:42 | history | answered | Justme | CC BY-SA 4.0 |