LRB
Member
- Location
- Interior Alaska
I am installing a 200 KW Cat Gen Set that is driving my altimer's. crazy. In the past 45 years I have intalled my share of gen sets but none like this one.This is a portable gen set that came out of a UREA manufacturing plant in Kenia Alaska.The plant is now shut down.The trailer and weather tight enclosure was manufactured for Catipiller by Capital Power Systems in 1995. Can't find Capital Power Systems on the net except for a company in India who makes 1 and 3 phase power meters and I don't think they made this enclosure. I have a 400 A 480V breaker and gen is rated at 250 KVA, 200 KW, 480V 300A. 300 A*1.25= 375 A hence 400 A breaker. Now the hair pulling part:
*** The field terminals are under a plastic cover adjacent to the gen console.
*** The temninal connections are 6" vertically apart, each terminal is at a 45 deg angle and 5 " horozonally from the the side of the enclosure.
***Each phase terminal has a duel 350MCM lug, the T0 terminal has a duel 250 MCM lug.
***The bottom of the terminal enclosure is completely open.
***There is a weather tight door that covers the console and this terminal connection box. The bottom 6" of this door consist's of a rubber flap. It is appearant the intent is to bring the field conductors through this rubber flap on the outer door and then through the open bottom of the terminal connection box.
***There are no provisions for securing conduit or cable.
***I do not see any UL listing on the enclosure. Assuming I can fabricate a means of securing MC cable terminations, I would like to run parallel runs of 3/0. We will have no 277 1 phase loads, but will bond EGC from MC cable and GEC to the T0. GEC will be 1/0 copper run to well casing.
*** I know I have to make the individual parallel sets of phase conductors the same length. Because of the tight constrights of the terminal connection box, I will have to stager the ends of the phase conductors. Do I also have to make A, B, and C phase conductors the same length.
Comments or suggestions? Sorry for the long post.
*** The field terminals are under a plastic cover adjacent to the gen console.
*** The temninal connections are 6" vertically apart, each terminal is at a 45 deg angle and 5 " horozonally from the the side of the enclosure.
***Each phase terminal has a duel 350MCM lug, the T0 terminal has a duel 250 MCM lug.
***The bottom of the terminal enclosure is completely open.
***There is a weather tight door that covers the console and this terminal connection box. The bottom 6" of this door consist's of a rubber flap. It is appearant the intent is to bring the field conductors through this rubber flap on the outer door and then through the open bottom of the terminal connection box.
***There are no provisions for securing conduit or cable.
***I do not see any UL listing on the enclosure. Assuming I can fabricate a means of securing MC cable terminations, I would like to run parallel runs of 3/0. We will have no 277 1 phase loads, but will bond EGC from MC cable and GEC to the T0. GEC will be 1/0 copper run to well casing.
*** I know I have to make the individual parallel sets of phase conductors the same length. Because of the tight constrights of the terminal connection box, I will have to stager the ends of the phase conductors. Do I also have to make A, B, and C phase conductors the same length.
Comments or suggestions? Sorry for the long post.