Making connections with existing LV Distribution Panels

[bendesa]

We need to do an interconnection with an existing MDP. There is a LOTO procedure and drawings and description about what and how to do it. The space behind the MDP is completely filled with existing cables. We have to be there. What are exactly the regulations for that? I mean do we have to cover those existing cables with something before we move there. Just standing on those cables doesn't seem quite right to me either. Of course, the power is off when we go to work there. I can't find the exact regulations how to deal with these existing cables. I hope someone can help.

 

[tom baker]

What type of cables are those?
The installation is a giant DIY mess.
Proceed with caution.

 

[hbiss]

What is that mess?? Is that in this country?

-Hal

 

[bendesa]

What type of cables are those?
The installation is a giant DIY mess.
Proceed with caution.

Yes it is a total mess. Unbelievable for me but I have to deal with it. We have to attach 3 x 1C 400mm2 and 1 x 1 C 240mm2

 

[bendesa]

What is that mess?? Is that in this country?

-Hal

Hi Hal,

No it's not in the US. I just try to find out what is the best way to deal with it. It's in Indonesia by the way.

 

[tom baker]

We are not familiar with your codes and safety standards. I would start over by removing each cable and reinstalling per your code

 

[bendesa]

We are not familiar with your codes and safety standards. I would start over by removing each cable and reinstalling per your code

Just asking what is the NEC code for this situation,

 

[tom baker]

The NEC does not permit cable wiring as shown in the picture. The wiring method, of which many types are available, is to protect from physical damage. Start with NEC chapter 3 and article 300

 

[tom baker]

And to answer your question, the NEC is an installation standard, not a maintenance standard. For working on that existing system, look at NFPA standard, 70 E.