Question about Sperry Instruments Measuring Tools & Sensors
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Posted on Jan 02, 2017
SOURCE: Ground Wire is testing as hot
Assuming you are in the United States, the convention with 120 volt ac circuits is that the Black is HOT, the White Neutral, and Green is Ground. Assuming your tester is a neon type light suitable for 120 volt ac circuits, the tester will illuminate when the tester leads touch the black hot and the white neutral, and also when the tester leads touch the black hot and the green ground. the tester should not illuminate when the leads simultaneously touch the white neutral and the green ground. It appears from your description that Your circuit description is operating correctly.. Surprise? ... your tentative assertion "when I touch the black hot wire and the copper ground wire with the tester. This is should not happen, correct?" this assertion (YOURS) is wrong, rather, it would be correct for it to illuminate between the black hot and the green(you say bare copper) ground. It sounds to me, if you need to ask this question, "YOU SHOULD NOT BE FOOLING AROUND WITH LETHAL 120 VOLT HOUSE VOLTAGES AND CURRENTS" I strongly recommend you should hire a licenced electrician. Besides getting electrocuted, you could set fire to the HOUSE, and maybe not when you are looking but when you are asleep, or away from home. PLEASE BE FORWARNED. thank you. Regards --- GooseBay_Camper
Posted on Sep 28, 2009
I wonder if you don't have a place where the wire has abraded through and is now able to track to earth, or even a Partial Disconnection of the Phase wire, at that point and where it has worn through, it is contacting ground. You could have a Phase disconnection, that is touching earth, and when a load comes on, the fault, because of the current draw, now goes "Full On" as it "Shorts" to earth, while at same time, cannot deliver much current past that fault point. You need to remove Power from that Circuit, then measure, for Continuity, from Breaker Board to each wire in the Socket, and From Phase & Neutral to Earth. You should get continuity between Phase & Neutral, BUT nothing between each of those and Earth. If you twist together, the Phase and Neutral at the Socket, from the breaker board end, you should get a very LOW OHMS reading under 1 -2 OHMS, if not that is a fault.
Posted on Mar 03, 2010
iam not so familiar with this system as an electronic expert i love make some suggestion the transformers have two section one is primary and the secondary if its step down transformer means when the p[primary section is give a high voltage the secondary has a low voltage it its a step up transformer the voltage secondary coil will have more voltage than the primary some transformers come with different winding in secondary and primary this can be found out by measuring the resistance between them the power to any transformer should be given to primary otherwise it may burn the transformer i think its in a serial connection the phase that is should be connected to H3 of the transformer and second end H4 of the transformer to be connected to the bulb the black wire go directly to the bulb
Posted on Oct 28, 2010
SOURCE: I'm instaling a two wire
Hook the green wires to the metal of the switch...
Then hook the black coming in to one of the outer screws, then hook the white coming in to the other outer screw...
Hook the two leads from the pump to the inner screws and you will be good to go!!!..
It really is not that hard...
Here is a tip that has a picture of a pressure switch wired...in this one there is a red and black for the power in and the power out...the in wires are on the one side of each contact and the out wires are on the other side..
Posted on Nov 06, 2010
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