Single Point Ground

Thks both of you for the detailed replies.

Jea48, pls clarify your comment 'If you do have to use some type of metallic raceway, conduit, ask him if he can use MC aluminum armor cable'. Would that be because of a Code requirement ?

If so I am not aware of any, pls confirm you are not recommending a metallic conduit unless required by code.

Is all NM-B sheathed or is there an unsheathed version ?
And what is the sheathing for ?

Is this different from regular cable I would buy at Home Depot ?

Jea48, pls clarify your comment 'If you do have to use some type of metallic raceway, conduit, ask him if he can use MC aluminum armor cable'. Would that be because of a Code requirement ?

Depending on the wiring method the electrician may have to use, he may not be able to use NM-B cable. Might be a (AHJ) issue. If he cannot use NM-B can he use MC cable?

My choice of aluminum armor MC instead of steel armor MC is only because aluminum is non ferrous. Has nothing to do with code.

Is all NM-B sheathed or is there an unsheathed version ?
And what is the sheathing for ?

Sheath only refers to the outer jacket of the NM-B cable.

One other thing I forgot to mention. Have the electrician cut in two separate openings in the wall for each rough-in box for the duplex recepts. Gives you more flexibility on down the road if you want to experiment with receptacle cover plates .

Like I said your electrician will know what needs to be done to meet NEC as well as (AHJ) for your area.

Make sure he goes over the entire job with you before he starts. Asks lots of questions. Make sure he is licensed....

Use 'Nylon flexible duplex cover plates'.

Why this recommendation Jea48 ?

thanks to all for the comments, this has been very helpful.