I checked the voltage at the discon
I checked the voltage at the discon
(OP)
I checked the voltage at the disconnect and read 224 volts from L1 to L2, 224 volts from L1 to ground and 0 volts from L2 to ground. It appears to have a high leg and a neutral instead of two 110 legs. Any one ever see this before, and is it a problem? It doesn't seem right to me, but this is my first year in the trade. I would appreciate some of you experienced techs sharing your knowledge.
THIS IS A PROBLEM ON ANOTHER WEB SITE, ANY COMMENTS APPRECIATED
THIS IS A PROBLEM ON ANOTHER WEB SITE, ANY COMMENTS APPRECIATED





RE: I checked the voltage at the discon
Barry1961
RE: I checked the voltage at the discon
Some details on the nature of the electrical source and load by the OP would be helpful. As stated, the problem and need for resolution are not very apparent.
The terms "high leg" and neutral don't have much meaning when discussing a two-wire circuit.
RE: I checked the voltage at the discon
RE: I checked the voltage at the discon
Sounds like a very normal european installation where a two-wire distribution uses one grounded N (neutral) and one live L (line). There is also a PE (protective earth) which is normally connected to the N if you have the common TN-C system. So everything looks perfectly normal if you ask someone in Europe. Where are you situated?
RE: I checked the voltage at the discon
RE: I checked the voltage at the discon
I had mag starter once, simple start/stop control for a fan, do a wierd thing. I cud start the fan but the stop button didnt work. Hmm, checked to see the stop button contact was ok ok. checked for voltage ok. Hmmmm, the only way I could de-energize the starter was to turn off it's disconnect. Turns out the design of the start/stop station (Square D)permitted a short to gnd at the back of the stop button. We were connected to a 208v, 3phase, 3wire source with one phase gnded and our starter control was across L1 and L2.The stop button was connected to L1 which happenned to be the gnded phase. so you see our stop button was effectively bypassed. these problems are still out there!
RE: I checked the voltage at the discon
RE: I checked the voltage at the discon
Wouldn't it be safer to use and fuse L2 and L3 for the control cct? Or a control tf properly fused and gnded?
I dont need a code book to tell me that one.
RE: I checked the voltage at the discon