Town Band Stand bonding (or grounding)

[olc]

A small town park band stand with a steel structure.
There will be a panelboard mounted on a rack near the band stand. It will serve a couple receptacles and lights in the bandstand. The panelboard is fed from a park building about 100 feet away.
Should the band stand steel be bonded to the electric ground in any way.

Follow up question: If the panelboard is mounted on steel (kindorf) (as opposed to a wood rack) should the steel be bonded (it would be via the connection to the panelboard enclosure)?

 

[Nom Deplume]

There needs to be an EGC installed with the feeder and the neutral and EGC need to be kept separate at the band stand panelboard.
A ground rod needs to be installed at the panel and bonded to the EGC and the steel structure.

Done. :happyyes:

 

[olc]

There needs to be an EGC installed with the feeder and the neutral and EGC need to be kept separate at the band stand panelboard.
A ground rod needs to be installed at the panel and bonded to the EGC and the steel structure.

Done. :happyyes:

A EGC will be installed with a feeder to the panelbd grounding bar. (not connected to the neutral at the panelbd)

Are you saying a separate grounding electrode conductor be installed to the band stand structure from the service ground? Or the same EGC above be bonded to the structure and another ground rod?

 

[tom baker]

There needs to be an EGC installed with the feeder and the neutral and EGC need to be kept separate at the band stand panelboard.
A ground rod needs to be installed at the panel and bonded to the EGC and the steel structure.

Done. :happyyes:

The feeder panel requires a grounding electrode system which may not be a ground rod.

 

[ActionDave]

A small town park band stand with a steel structure.
There will be a panelboard mounted on a rack near the band stand. It will serve a couple receptacles and lights in the bandstand. The panelboard is fed from a park building about 100 feet away.
Should the band stand steel be bonded to the electric ground in any way.

A look at 250.52 will tell you if the bandstand is a Grounding Electrode. If it is not then usually the steel gets bonded to the equipment ground just from the nature of running the branch circuits.

Follow up question: If the panelboard is mounted on steel (kindorf) (as opposed to a wood rack) should the steel be bonded (it would be via the connection to the panelboard enclosure)?

Good to go. No extra bonding needed.

 

[kwired]

A small town park band stand with a steel structure.
There will be a panelboard mounted on a rack near the band stand. It will serve a couple receptacles and lights in the bandstand. The panelboard is fed from a park building about 100 feet away.
Should the band stand steel be bonded to the electric ground in any way.

Follow up question: If the panelboard is mounted on steel (kindorf) (as opposed to a wood rack) should the steel be bonded (it would be via the connection to the panelboard enclosure)?

I read it as meaning the panel is on a rack. The bandstand is separate and is supplied by branch circuits. Probably a good idea to bond to the steel structure with a bonding conductor sized per the largest circuit that may energize things.(use 250.122)If using metal raceways, it is probably bonded well enough just by attaching raceways.

Is this bandstand something permanently installed or is it something portable? If it is permanent and is a qualifying grounding electrode I would probably run a GEC to it - especially if it is immediately adjacent to the rack with your panel.

 

[olc]

Just so I am clear - If the panelboard were just sitting by itself on a rack away from the building (were the service is), and not serving a structure, would it need a grounding rod?

There are (4) 120V circuits running over to the band stand.

The band stand is a permanent steel structure with the columns sitting on foundation piers (reinforced poured foundations) with the columns held down by bolts from the foundation. I don't know if the bolts are connected to the reinforcement.

 

[Ponchik]

I see the band stand as a separate structure. I would install a grounding electrode and bond it to the Equipment Grounding bar in the panel that is by the stand/structure. The 4 conductor feeder will have the EGC connected to the EG bar in the panel that is by the stand/structure.

As far as bonding the stand/structure, as soon as you install the enclosure on the stand then the structure becomes bonded. (assuming you will have good metal to metal contact). If you want you may also install a separate bonding jumper from the enclosure to the stand/structure.

 

[GoldDigger]

The rack and the panel attached to it arguably constitute a structure on its own.
A similar argument has been raised for meter/disconnect pedestals in mobile home parks.