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Electricity on Shabbat: Difference between revisions

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# It is forbidden to use a regular elevator on Shabbat. Some allow using a 'Shabbat elevator' which stops at every floor, while others forbid, and some say one may go up in the Shabbat elevator but not down. It is forbidden to touch the elevator doors when they are closing. <ref>Shemirat Shabbat KeHilchata 23:29 permits uses a Shabbat elevator on Shabbat. Sefer Maliyot BeShabbat (chapters 1 and 7) holds that one may go up in the elevator but not down. Menuchat Ahava 24:15-6 concludes that one shouldn't use the Shabbat elevator to go up or down unless there is a great need in which case he is lenient to allow going up in the Shabbat elevator. </ref>
# It is forbidden to use a regular elevator on Shabbat. Some allow using a 'Shabbat elevator' which stops at every floor, while others forbid, and some say one may go up in the Shabbat elevator but not down. It is forbidden to touch the elevator doors when they are closing. <ref>Shemirat Shabbat KeHilchata 23:29 permits uses a Shabbat elevator on Shabbat. Sefer Maliyot BeShabbat (chapters 1 and 7) holds that one may go up in the elevator but not down. Menuchat Ahava 24:15-6 concludes that one shouldn't use the Shabbat elevator to go up or down unless there is a great need in which case he is lenient to allow going up in the Shabbat elevator. </ref>
# It's permitted to open a refrigerator door when the motor is running as long as the light was disabled from before Shabbat, however, when it is not running it's proper not to open the refrigerator. <ref>Menuchat Ahava 24:19, Har Tzvi 1:151, Chelkat Yaakov 3:179,Minchat Yitzchak 2:16,Eidut LeYisrael p. 122 and Yabia Omer 1:27. Rav Moshe Feinstein in Iggerot Moshe 4:74 as well as 2:68 rules leniently even when the motor is off, as does Rav Eliezer Waldenberg Tzitz Eliezer 8:12 and 12:92. Shemirat Shabbat Kehilchata (10:12) recommends setting the refrigerator to a timer. </ref>
# It's permitted to open a refrigerator door when the motor is running as long as the light was disabled from before Shabbat, however, when it is not running it's proper not to open the refrigerator. <ref>Menuchat Ahava 24:19, Har Tzvi 1:151, Chelkat Yaakov 3:179,Minchat Yitzchak 2:16,Eidut LeYisrael p. 122 and Yabia Omer 1:27. Rav Moshe Feinstein in Iggerot Moshe 4:74 as well as 2:68 rules leniently even when the motor is off, as does Rav Eliezer Waldenberg Tzitz Eliezer 8:12 and 12:92. Shemirat Shabbat Kehilchata (10:12) recommends setting the refrigerator to a timer. </ref>
==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>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>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 setting a mechanical alarm clock that involves removing a pin (see there). </ref> See [[Making music on Shabbat]].
==Reading by candle light versus light bulb==
==Reading by candle light versus light bulb==
# One isn’t allowed to read by a candle (wick in oil) on Shabbat because there is Gezerah that one will come to tilt the wick. <Ref> Mishna Shabbat 11a says that it’s forbidden to read by the light of a candle because one will come to tilt the wick. Rashi explains that if one tilts to wick (which is flickering) towards the oil so that it lights well, one will be violating Mavir (lighting a flame on Shabbat, which includes adding fuel to a flame). S”A 275:1 quotes this as halacha. </ref>
# One isn’t allowed to read by a candle (wick in oil) on Shabbat because there is Gezerah that one will come to tilt the wick. <Ref> Mishna Shabbat 11a says that it’s forbidden to read by the light of a candle because one will come to tilt the wick. Rashi explains that if one tilts to wick (which is flickering) towards the oil so that it lights well, one will be violating Mavir (lighting a flame on Shabbat, which includes adding fuel to a flame). S”A 275:1 quotes this as halacha. </ref>