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The Water Cooler
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Miller mig welders
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<blockquote data-quote="_CY_" data-source="post: 1553979" data-attributes="member: 7629"><p>in mid town ... still running a water tower with three phase semi-hermetic compressor for my air conditioning. </p><p></p><p>unreal efficiencies are achieved with three phase combined with BTU gains from water coming from deep underground. </p><p></p><p>just installed a new 10 ton water tower. a few years back retro-fitted the original Chrysler Air Temp radial compressor with a modern semi-hermetic Copeland also three phase. </p><p></p><p>working on three phase delta with wild leg. one really needs to keep track of where that wild leg goes. only use for wild leg is for three phase compressor, so that wild leg never hits the panel. three phase circuit is wired completely separate. </p><p></p><p>when my meter was upgraded to new electronic self-reading model. it took several tries until an old timer PSO tech could be found that understood how to wire it in. </p><p></p><p>recently high winds blew down a 2ft diameter tree trunk ... took out the main power lines for our block. my service was ripped out. there was no markings on feeder wires indicating wild leg. so when the linemen hotted up my meter. I had to go through my house verifying the wild leg was hooked correctly. then I had to deal with my 3 phase compressor rotating the correct direction..... big time fun</p><p></p><p>a few years back during the big ice storm... huge branches downed power lines all over. especially our neighborhood with huge trees. Linemen from out of town had never seen three phase in a residential area.... anyways something got wired wrong and the wild leg got hotted up in the wrong phase. blew out almost everything electrical plugged in.... can you say fun?</p></blockquote><p></p>
[QUOTE="_CY_, post: 1553979, member: 7629"] in mid town ... still running a water tower with three phase semi-hermetic compressor for my air conditioning. unreal efficiencies are achieved with three phase combined with BTU gains from water coming from deep underground. just installed a new 10 ton water tower. a few years back retro-fitted the original Chrysler Air Temp radial compressor with a modern semi-hermetic Copeland also three phase. working on three phase delta with wild leg. one really needs to keep track of where that wild leg goes. only use for wild leg is for three phase compressor, so that wild leg never hits the panel. three phase circuit is wired completely separate. when my meter was upgraded to new electronic self-reading model. it took several tries until an old timer PSO tech could be found that understood how to wire it in. recently high winds blew down a 2ft diameter tree trunk ... took out the main power lines for our block. my service was ripped out. there was no markings on feeder wires indicating wild leg. so when the linemen hotted up my meter. I had to go through my house verifying the wild leg was hooked correctly. then I had to deal with my 3 phase compressor rotating the correct direction..... big time fun a few years back during the big ice storm... huge branches downed power lines all over. especially our neighborhood with huge trees. Linemen from out of town had never seen three phase in a residential area.... anyways something got wired wrong and the wild leg got hotted up in the wrong phase. blew out almost everything electrical plugged in.... can you say fun? [/QUOTE]
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