you read my mind. Thanks <br /><br />Note: House panels are single phased. "A" and "B" are the same phase. I use the word "side" to differentiate the two.Originally posted by Xcusme:<br /> I think this is where's he's going.....<br /><br />
could've fooled me....<br /><br />dunaruna...i can save it in any format. point the way please...Originally posted by Xcusme:<br /> I just knew I'd catch flack on the term Phase, I used it here only to differentiate between polarity, as one line rises the other line falls.
??? How So??Originally posted by --GQ--:<br />could've fooled me....<br /><br />dunaruna...i can save it in any format. point the way please...Originally posted by Xcusme:<br /> I just knew I'd catch flack on the term Phase, I used it here only to differentiate between polarity, as one line rises the other line falls.
<br />Oh, and the phases on most houses are 180° apart. When you have +170 on phase A you have -170 on phase B.<br />If you suspect an intermittant problem, call up the local utility. Usually they'll come in and put in a strip recorder for a couple of days as a free service.I don't know how to explain it to you. The drawing is clear and direct. The transformer siting on the utility pole in your back yard is a single phase 240v. It has ONE winding(coil of continuous wire wraped around a magnetic iron core to produce electricy/voltage) naturaly have two ends being "A" and "B" . The voltage between the two points is 240v. To get 120v, a center tap (neutral) is added(smack in the middle of the winding). From the center tap (neutral) to "A" or "B" is 120v.<br /><br />Refer to the drawing again for reference. I noted two lights in my explaination for simplicity. In real life there may be more than just two wired in series and parallel to each other. In this situation the circuit will never be broken as long as you keep replacing the bulbs on at a time. <br /><br />Go to the drawing and trace the current flow from point "A" pass the first light to the "spliced" (three wires junction). At that point if the neutral is lost, the current has no where to go but thru the second light to point "B". As noted earlier, the voltage between point "A" and "B" is 240v. The two bulbs are now subjected to 240v. Since they are in series, the voltage will be divided fairly even if they have the same wattage ratings thus will not burn out prematurely. On the flip side if the two bulbs are of different wattage ratings, the higher wattage will get a bigger share of the votage beyond the 120v bulb rating and will brn out sooner.<br /><br />I think your problem maybe that you "think" the only way to get voltage is from "A" to neutral or "B" to neutral. Inaddition, voltage may also be obtained from "A" to groung, "B" to groung or "A" to "B". This ( "A" to "B" ) is the case scenorio in question. From the infos given; leads to this conclusion although rare.<br /><br />Note: House panels are single "phased" with only one winding thus doe not have any "phase" shift as suppose to 3 "phase" power which has 3 set of windings with 120 degrees of electrical seperation.<br /><br /><br />credit: EE USC class of 97
Thank the maker for cut and paste.
Professor Technoquiet, I feel so much love from you. I guess this is a chat forum where we may never find out about the person on the other end. I maybe a "bot" just caughing out infos. relating to the subject of discusion.Or I maybe just copying and pasting from somewhere. In either case you would have to have a complete understanding of the question/infos. given to be able to find an article to copy and paste from . Sometime a negative can be used to solidify a positive. But you know sometime, ther are real people out there looking to give and recieve aswell teach and learn. I used to look at my glass as half empty. Having been on this forum, it's now half full "er". As you were.Originally posted by technoquiet:<br />Thank the maker for cut and paste.
