I am reviewing a design by another team. The current main disconnect is in a certain location. The proposal is to relocate the distribution cabinets which will have their own main disconnect switch and this is about forty feet away. The design leaves the current disconnect switch in place as a convenience for maintenance personnel so they will not have to walk around some obstructions to get to the new disconnect switch. Is this acceptable/legal/or a good idea? It seems to me that this redundancy could lead to confusion.
dual disconnects
- Thread starter kmelton
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ryan_618
Senior Member
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- Salt Lake City, Utah
Re: dual disconnects
Is this the service disconnect? If so, will you be splicing and re-routing the grounding electrode conductors?
Aside from the above, I would say this would be legal. All you are doing is creating a feeder a circuit. I doubt that there will be a voltage drop issue, with only 40' of difference (unless of course you were pushing it before).
Is it acceptable? I don't know...whos acceptance do you seek? The AHJ?-yes, it should be acceptable. The installer?-depends on the price
Is it a good idea?...???????
Is this the service disconnect? If so, will you be splicing and re-routing the grounding electrode conductors?
Aside from the above, I would say this would be legal. All you are doing is creating a feeder a circuit. I doubt that there will be a voltage drop issue, with only 40' of difference (unless of course you were pushing it before).
Is it acceptable? I don't know...whos acceptance do you seek? The AHJ?-yes, it should be acceptable. The installer?-depends on the price
Is it a good idea?...???????
Re: dual disconnects
if this means that both disconnects can be energized at the same time then in my opinoin you have a problem. i did an installation on a job in which there were 2 disconnects. 1 for the 440 and 1 for the 120. i forgot to turn off the 120 one time and nearly got electrocuted when my elbows went from hot to ground. i was hot and sweaty on top of that. several others since that time at that plant have also forgot both disconnects.
just my opinion.
safety first - even if you have to go an additional 40 ft & back to turn off the disconnect.
if this means that both disconnects can be energized at the same time then in my opinoin you have a problem. i did an installation on a job in which there were 2 disconnects. 1 for the 440 and 1 for the 120. i forgot to turn off the 120 one time and nearly got electrocuted when my elbows went from hot to ground. i was hot and sweaty on top of that. several others since that time at that plant have also forgot both disconnects.
just my opinion.
safety first - even if you have to go an additional 40 ft & back to turn off the disconnect.
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