Description: The three hot wires are A, B and C . A 120 volt single phase circuit uses one breaker "space" on this box that is 1 inch wide. A 240 or 208 volt single phase circuit uses two breaker "spaces" on this box. A 240 or 208 volt three phase circuit uses a 3 phase breaker that is 3 inches wide and it uses all phases of A, B and C. A restaurant often is wired a 3 Phase service as 120 volt / 208 volt 3 phase. Big loads like the AC run off the 208 volt 3 phase and use a 3 pole breaker that uses phases A, B and C. The small stuff often use plain single phase 120 volts and each circuit uses one hot phase and the Neutral buss bar.
Three Phase Breaker box and how it holds 1, 2 or 3 pole breakers - Download MP3 music or MP4 video:
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http://www.sparkyuonline.com In this video I am describing how a 3 phase panel is built and how the bussing works in accordance w/3 phase power. It is part o...
In reference to comments made on (Electrical Wiring- Residential 3 phase service) I wanted to expand on this subject: The video titled "Residential 3 phase s...
This is a video sample of a complete and comprehensive instructional lesson on how to make up a 3 phase panel. http://www.hatvideo.com.
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This diagram shows a 3 phase delta breaker in a single phase breaker box. The NEC allowed this until 1978 for a new install. The special HIGH LEG DELTA Break...
for more info,please visit http://www.electricneutron.com.
Residential 3 phase service upgrade.http://www.electricalindustrynetwork.com A/C units were brand new so the owner went w/ a new 3 phase panel.
This video taken with the panel totally removed from service -- DO NOT ATTEMPT WORK ON AN EXPOSED PANEL UNLESS YOU ARE QUALIFIED TO DO SO - YOU COULD BE ELEC...
http://www.sparkyuonline.com In this video I briefly describe a 3 phase 208v disconnect,fuses,grounding. More information can be found on my website regardin...
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