Service disconnect

[Djelite]

On a Seperately derived system(transformer) are the service disconnect on the primary side of the transformer ever fused?

 

[infinity]

If you're referring to a disconnect on the primary to de-energize the transformer for maintenance they can be fused or unfused.

 

[Djelite]

If you're referring to a disconnect on the primary to de-energize the transformer for maintenance they can be fused or unfused.under which conditions would you want it fused as opposed to not fused?