ptonsparky
Tom
- Occupation
- EC - retired
Customer is planning on adding some refrigeration units. The changes will require an upgrade from the existing 800 MDP with 6 mains, to a 1200. 480/277.
The best layout for me is to go back in with a 6 main, 1200 amp. The gear will fit and connection to the existing equipment will be easier.
I touched on having a main breaker similar to a 1600 amp service at another location. He wants to know if one is safer than the other. 6 Main vs GFP.
Other than limiting a ground fault current to a value and time is it safer? I believe they are starting to think OSHA and Arc Flash.
Existing MDP and new are and would be fused.
The best layout for me is to go back in with a 6 main, 1200 amp. The gear will fit and connection to the existing equipment will be easier.
I touched on having a main breaker similar to a 1600 amp service at another location. He wants to know if one is safer than the other. 6 Main vs GFP.
Other than limiting a ground fault current to a value and time is it safer? I believe they are starting to think OSHA and Arc Flash.
Existing MDP and new are and would be fused.