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Electricity on Shabbat: Difference between revisions

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* Sh"t Igrot Moshe 2:68, 4:74, Sh"t Har Tzvi 1:151, Sh"t Chelkat Yacov 3:179 (in new edition 1:77), Sh"t Minchat Yitzchak 2:16, and Sh"t Az Nidabru 2:36 only permit opening the refrigerator when the motor is running but when it is not running one should not open it.  
* Sh"t Igrot Moshe 2:68, 4:74, Sh"t Har Tzvi 1:151, Sh"t Chelkat Yacov 3:179 (in new edition 1:77), Sh"t Minchat Yitzchak 2:16, and Sh"t Az Nidabru 2:36 only permit opening the refrigerator when the motor is running but when it is not running one should not open it.  
* Sh"t Yabia Omer OC 1:21 and Menuchat Ahava 24:19 writes that it's  very proper not to open the refrigerator except when the motor is running. Shemirat [[Shabbat]] Kehilchata (10:12) recommends setting the refrigerator to a timer. </ref>
* Sh"t Yabia Omer OC 1:21 and Menuchat Ahava 24:19 writes that it's  very proper not to open the refrigerator except when the motor is running. Shemirat [[Shabbat]] Kehilchata (10:12) recommends setting the refrigerator to a timer. </ref>
==Setting timers before [[Shabbat]]==
==Setting timers before Shabbat==
# It is permitted before [[Shabbat]] to set a timer for lights or other electric appliances to go on or off on [[Shabbat]].<ref>Sh"t Maharam Shik 157, Chazon Ish 38:2, Shemirat Shabbat KeHilchata 13:26, Menuchat Ahava 24:30, Sh"t Yabea Omer 3:17 </ref>
# It is permitted before [[Shabbat]] to set a timer for lights or other electric appliances to go on or off on [[Shabbat]].<ref>Sh"t Maharam Shik 157, Chazon Ish 38:2, Shemirat Shabbat KeHilchata 13:26, Menuchat Ahava 24:30, Sh"t Yabea Omer 3:17 </ref>
# One may set an alarm clock before [[Shabbat]] even though it will make noise on [[Shabbat]]. <ref>The Shabbos Home (Rabbi Simcha Cohen, vol 2, pg 537) and Sh"t Maharshag YD 1:7(2) permit. However, Sh"t Igrot Moshe 4:70(4) only permits if it is not heard outside his personal room. See Shemirat Shabbat KeHilchata 28:29 (and 28:30 in new edition) who permits before [[Shabbat]] for mitzvah purposes setting a mechanical alarm clock that involves removing a pin (see there). </ref> See [[Making music on [[Shabbat]]]].
# One may set an alarm clock before [[Shabbat]] even though it will make noise on [[Shabbat]]. <ref>The Shabbos Home (Rabbi Simcha Cohen, vol 2, pg 537) and Sh"t Maharshag YD 1:7(2) permit. However, Sh"t Igrot Moshe 4:70(4) only permits if it is not heard outside his personal room. See Shemirat Shabbat KeHilchata 28:29 (and 28:30 in new edition) who permits before [[Shabbat]] for mitzvah purposes setting a mechanical alarm clock that involves removing a pin (see there). </ref> See [[Making music on [[Shabbat]]]].