400 amp meter main panel with no branch circuit distribution.

[jlf1977]

I'm working with a client who needs a 400 amp service at the front left corner of their existing three story home with a slab floor. They want all distribution to come from the sub-panel in a mechanical/utility room at the right rear corner of the first floor. I realize two sub-panels would be ideal but I'd like feed back on the best way to entertain their request of one sub-panel with no distribution at the main.

Thanks folks for your consideration!

 

[infinity]

One subpanel is fine it's just that you will need to get a 400 amp feeder to the sub's location. If you had two sub panels, with one at the service, then you could use a much smaller feeder to the utility room.

 

[JoeStillman]

You don't usually see SER cable running all the way through a house but that's what you need if you want to give them what they want. SER can go just about anywhere Romex can, as long as the overcurrent protection is at the beginning of the run.

I would put a 400A fusible disconnect or breaker at the service entrance and run 500's above the ceiling.

How'd you get to 400A? There must be a lot of square feet in this house!

 

[kwired]

I'm working with a client who needs a 400 amp service at the front left corner of their existing three story home with a slab floor. They want all distribution to come from the sub-panel in a mechanical/utility room at the right rear corner of the first floor. I realize two sub-panels would be ideal but I'd like feed back on the best way to entertain their request of one sub-panel with no distribution at the main.

Thanks folks for your consideration!

If you are set on all distribution from that one location, what is reasoning for putting the service on opposite corner of house?

If it must be that way then you will need to either go through the house, on outside of house, or underground to get there.

Options are single large conductor/cable or smaller but parallel conductor/cable, or even busway, I guess.

Next question is 400 amps really necessary? If they want to pay for it when not really needed then by all means don't keep them from spending their money.