Question breaker

[hhsting]

Attached sketch shows utility xfmr and 120/208V three phase 2000A switchboard all outside. I have one 1200A feeder breaker from switchboard going underground outside coming up side of building exterior walls to MLO 1200A panelboard next to exterior walls of building labeled cluster #1

The 1200A MLO panelboard has four feeder breakers 400A. Each feeder breaker go underground and come up along side of building first floor into meter stacks.

Question:

1. Each 400A underground feeder when they enter meter stack room from outside first floor need disconnect or not?

2. Is each 400A underground feeder outside feeder need to comply 225 even though the 1200A panelboard is next to wall and has grounding electrode system?

 

[augie47]

Did I mention the check for doing your work didn't make it this month ?
1. No
2. No

 

[tom baker]

Your drawing is not clear. Try using blue line graph paper, or better yet Clear Print, as those lines don't copy.

 

[hhsting]

Did I mention the check for doing your work didn't make it this month ?
1. No
2. No

I dont know if you have work or you work for mike holts not sure but few months ago there was opening for knowledgeable experience people electrical side in code NEC 2014 one of my friend said i posted link in electrical jobs. They said they did not enough resume starting was around 70k. Since then covid started but they are going to repost it i think

 

[electrofelon]

I agree with Augie. I admit the wording in the scope of 225 and part II could be improved to be more clear when 225 applies.