ceb58
Senior Member
- Location
- Raeford, NC
Have a situation that happened Wednesday and am curious as to what you would require. We buy prefab communication buildings. The buildings come in all ready wired. They have a main disco inside that has TVSS systems tied to them. They then go through a ATS to a MDP. From the MDP a UPS is fed along with 2 HVAC units, lights and gen. use recpt. From the UPS are surge protected outlets. The feeders from the 40kw gen. were installed and it is a solid neutral system.
The GC's that is in charge of the set up has his sub contractor elect. install a meter combo on the out side of the building and tie into the main disco inside. They also run and connect the gen. feeders.
The communication tech's went there Wednesday to start their install. They turned on the main and things started smoking and snap,crackle and pop. One tech. ran like a girl, the other finally got his whits about him and killed the main after about 2-3 mins. of what in the world is going on.
On Thursday my counter part went to look to find out what and who was responsible. When he opened the meter combo the first thing he saw was a 3/0 with about 4 inches of WHITE tape lugged in under the phase B of the main breaker. The neutral was in its proper place every where else.
We know that the modules in the TVSS are shot, the HVAC unit tried to single phase. Some of the surge protected recpts. are gone along with lights that were fed from phase A. Chances are the electronic controls in the ATS and Gen. are gone also. Don't know about the 16kw UPS,it was in line position and did not have the modules or batteries in it yet.
What would you require before you accepted the building? Megger the gen. to see if it hurt the armature? Megger the HVAC units? What check list would you want to see?
The GC's that is in charge of the set up has his sub contractor elect. install a meter combo on the out side of the building and tie into the main disco inside. They also run and connect the gen. feeders.
The communication tech's went there Wednesday to start their install. They turned on the main and things started smoking and snap,crackle and pop. One tech. ran like a girl, the other finally got his whits about him and killed the main after about 2-3 mins. of what in the world is going on.
On Thursday my counter part went to look to find out what and who was responsible. When he opened the meter combo the first thing he saw was a 3/0 with about 4 inches of WHITE tape lugged in under the phase B of the main breaker. The neutral was in its proper place every where else.
We know that the modules in the TVSS are shot, the HVAC unit tried to single phase. Some of the surge protected recpts. are gone along with lights that were fed from phase A. Chances are the electronic controls in the ATS and Gen. are gone also. Don't know about the 16kw UPS,it was in line position and did not have the modules or batteries in it yet.
What would you require before you accepted the building? Megger the gen. to see if it hurt the armature? Megger the HVAC units? What check list would you want to see?
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