I figured we could talk about Separately Derived Systems, (SDS) specifically SDS derived from transformers.

Here is a great picture of an transformer installation.

[Linked Image]

I am not interested in 'slamming' the installer I would like to discuss the NEC requirements regarding this installation.

Personally I think this is a nice job and only have one minor code issue with it.

What do the rest of you think of this?

For those of you who have not installed transformers join in, ask questions. No one is going to get flamed for trying to learn new things. [Linked Image]

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts