400amp Service with 2 200amp Panels - Mike Holt's Forum
2019年6月1日 · What is the correct way to do a 400 amp service with 2 200amp panels? Or a 600 amp with 3 200amp main breaker panels? Do I need a gutter above the panel with taps, or can I run 3/0 from each panel to the whether head? What about grounding and bonding two or 3 main panels? The service in question is 3 phase.
400 Amp Disconnect feeding two 200 amp main breaker panel
2017年9月1日 · Hi guys I'm planning to feed two 200 amp main breaker panels from a 400 amp fused disconnect (Main disconnect after the meter provided by the building). If I ran all the wire to the disconnect load side lugs, am I still subject to the 25' tap rule? Thanks.
tap rule for sub-panel | Information by Electrical Professionals for ...
2005年5月28日 · The Tap is made from the main lugs of a 400-amp panel which has a 400-amp main service disconnect as PROTECTION. The Tap was made on the 400-amp panel main lugs and feed a 200-amp rated Breaker in a enclosure. The load of the 200-amp breaker feeds a transfer switch then on to feed other panels.
AIC RATING FOR PANELBOARD VS MAIN BREAKER INTERRUPTING …
2017年8月30日 · The panel was located right next to the main distribution panel, that is why it needed a higher rating and the issue as I have explained has been taken care of. Also, to answer your question Jraef, the original panel I was referring to was a Siemens panel model number P1E42FX200CTST with a main breaker model number FXD6.
Does a commercial sub-panel require a main circuit breaker?
2021年2月19日 · The panel is protected by the main circuit breaker and the feed through conductors are also protected by the main CB. For that reason no OCPD is required between the two panels. Since you mentioned the panel being fed from a transformer it's possible that the feed through conductors can actually be smaller than the conductors feeding the main ...
One Line diagram and Load Schedule for 400amp residential house
2017年4月24日 · Only 2 main breakers in the main panel. 400amp total service. What do you think about the one line diagram? Does it looks correct? We used AL 4/0 4/0 4/0 SER cable to feed each of the 200amp sub panels. And 500kcmil for the main panel feeder. One ground rod bonded with metal concrete frame of the house and water bond.
Main Breaker Wouldn't reset from Off | Information by Electrical ...
2009年5月10日 · While I was answering a post in another thread, I shut off the main breaker on my Square-D 200 amp homline panel for I believe the first time in 14 years. To my horror, it would not reset and I thought I was going to have to call an electrician . I did manage to get it to reset by holding it in the On position and tapping gently on the case.
Looking for 400 amp main breaker plug on panel | Information by ...
2017年7月29日 · If he has same calculated load but through a single 400 amp service disconnect he will need 600 aluminum, even if taking 310.15(B)(7) allowance into consideration, ampacity of 500 aluminum is only 77.5% of 400. d
400 amp feed thru panel from panel A to panel A1 needs a Main …
2012年3月27日 · There is a main breaker in the panel on the left, then you are feeding the panel on the right through lugs, Okay, My plans are calling for a Main 400 amp breaker only at the main service , then the first panel is a feed thru panel "A" is without a Main just double M.L.O. then its jumping over to the panel on the right "A1" also with no main.
400 amp service with 2-200 sub panels | Information by Electrical ...
2004年2月24日 · Re: 400 amp service with 2-200 sub panels As for a better way of grounding. Having main bonding jumper father away from the service panel is not a better system useing 230.40 exception #3 will allow the main bonding jumper to be where it is needed at the house this will allow for a faster operation of breakers in the event of a ground fault since you wont have …