Meaning of "structure served", 250.50

[dnem]

Why does 250.50 say "structure served" and not "structure supplied" ? . Does served mean a service ? . Does 250.50 apply to a second building supplied by a feeder from a first building ? . Or does the electrode requirement for the second building only come from the wording found in 250.32 ? . The second building does not have to be considered to be a "structure served" in order for 250.32 to apply. . If 250.50 doesn't apply to the feeder supplied second building, 250.32 would still require an electrode.

This has direct implications for a pool subpanel pedestal [and other situations also]. . If the absence of a service at the pool pedestal means that it is not a "structure served", 250.50 doesn't apply. . 250.32 would also not apply which would mean an electrode is not required for any non service pedestal, light pole base, or whatever.

Is there any ROP, ROC wording that addresses "structure served" for a building that is supplied by a feeder or branch circuit(s) ?

 

[iwire]

I don't think it makes one bit of difference.

 

[dnem]

I don't think it makes one bit of difference.

I don't know what you're saying. . Are you saying you believe 250.50 applies to a freestanding pool subpanel or not ?

 

[dnem]

bump to top

 

[iwire]

I don't know what you're saying. . Are you saying you believe 250.50 applies to a freestanding pool subpanel or not ?

Yes, IMO 250.32 applies and brings 250.50 along with it.

• It's a structure
  
• It's separate
  
• It's supplied by a feeder.

Served, supplied, deliver, furnish it's all the same as far as I can see.

 

[petersonra]

I think it is careless choice of words.

Structure. That which is built or constructed.

I am not sure I would make the argument with a straight face that a pole sunk in the ground was either built or constructed, but it seems it is generally construed to mean that.

I think it would be better to use more precision in the wording. Its pretty clear that they intend for you to put a GES in place at a seperate structure, such as a garage. Why a freestanding pole would qualify as a structure is another thing.

 

[cschmid]

okay I'll bit..but I need to warn you I have not had rabies shots..Are you saying you believe 250.50 applies to a freestanding pool sub panel or not ? 250.50 Grounding Electrode System.
All grounding electrodes as described in 250.52(A)(1) through (A)(7) that are present at each building or structure served shall be bonded together to form the grounding electrode system. Where none of these grounding electrodes exist, one or more of the grounding electrodes specified in 250.52(A)(4) through (A)(8) shall be installed and used.

I believe a pool is a structure made for the soul purpose to house a liquid that humans will submerse themselves in..this make it a structure and if the pole or what ever type of means used to secure the electrical supply used to operate this pool is on would meet the requirments..so a pole or other means used to support the electrical service that supplies power to a man made structure need to meet the requirements..

 

[Dennis Alwon]

I am not sure I would make the argument with a straight face that a pole sunk in the ground was either built or constructed, but it seems it is generally construed to mean that.

I think it would be better to use more precision in the wording. Its pretty clear that they intend for you to put a GES in place at a seperate structure, such as a garage. Why a freestanding pole would qualify as a structure is another thing.

I hear you and I agree that there needs to be work on the meaning of structure. However, what difference is there between a panel mounted on a pool for pool equipment and a panel mounted on a shed that has pool equipment. I am not sure why the walls, etc. would make a difference.

 

[petersonra]

I hear you and I agree that there needs to be work on the meaning of structure. However, what difference is there between a panel mounted on a pool for pool equipment and a panel mounted on a shed that has pool equipment. I am not sure why the walls, etc. would make a difference.

I agree there is little difference. Why does the number of circuits matter? A lot of odd things.