Temp/Down Time

[Alwayslearningelec]

Curious as to how others would approach this.

Have existing MDP feeding new DPL( existing DPL being replaced in same location and existing feeder to DPL being replaced).

DPL feed loads that the are being intercepted and fed from new DPL.

The existing loads that DPL feeds( that are being intercepted) must remain live.

How would you approach to minimize downtime to these loads? Temp out??

Even if you ran the new conduits from splice box to DPL vicinity next to existing ones you’d still have long down time if you didn’t temp.

You would have to all feeds, even to DPL in place and the downtime would be:

1. De-energize to feeder to DPL so you can remove DPL
2. Re-install DPL and connect feeder to DPL
3. Tie in loads to DPL and splice box then liven up

If you didn’t temp out that would be roughly the amount of time there would be no power to the loads from DPL?

Thanks.

 

[petersonra]

It seems to be there's a lot of details you are not telling us that might impact how someone would go about this process. One detail is why the loads can't be de-energized.

Even if you rent a generator to provide temporary power you are going to have some period of time while you are switching to the generator that you have no power on a load, and then when you switch it back to the distribution panel you are going to have a short period of time with no power.

And that assumes that you can justify working live in the first place.

 

[Alwayslearningelec]

They request loads to be temped out. They state this will minimize down time. Why would we be working live?

 

[petersonra]

They request loads to be temped out. They state this will minimize down time. Why would we be working live?

You did say in the original post that the loads must remain live.

 

[Alwayslearningelec]

You did say in the original post that the loads must remain live.

Yes but that is impossible right? you'll always have down time when you swing over to temp source.