Barriers for Service Panelboards

[tom baker]

2017 NEC requires barriers on the incoming line terminals for service panelboards [410.3(A)(2)]. These type of panelboards have long been required in Canada, any insight on USA availability? Is it just a matter of getting the Canadian panels UL listed?

 

[shortcircuit2]

The new requirement for barriers for single disconnect panelboards in 408.3(A)(2) is inline with what UL product standard 67 requires now. This new provision provides a level of safety from contact with line side uninsulated live parts similar to the requirement for switchboards and switchgear.

I read that there will be accessory barrier kits available from manufacturers for panelboards.

 

[iwire]

Some of the 'sheilds' shown here http://www.schneider-electric.us/en/work/products/explore/service-entrance-barriers/commercial/ are not very impressive but it is a start.

 

[al hildenbrand]

Some of the 'sheilds' shown here http://www.schneider-electric.us/en/work/products/explore/service-entrance-barriers/commercial/ are not very impressive but it is a start.

The link Bob posts is to the same product that the IAEI Analysis of Changes 2017 NEC PDF slide show includes. I saw this Clip-Over-Lug-Bit-Of-Plastic for the first time just this last weekend at a continuing education class.

The implication is that UL 67 is accepting a simple snap on plastic cover that slips over each lug as meeting the requirements of 408.3(A)(2).

That's a lot less onerous than the Canadian metal enclosures over the entire line side.

 

[jim dungar]

Some of the 'sheilds' shown here http://www.schneider-electric.us/en/work/products/explore/service-entrance-barriers/commercial/ are not very impressive but it is a start.

These barriers appear to be for added protection while the equipment is being verified as de-energized.
They definitely are not intended to allow 'live work' inside the panel.

From the provided link:

The addition of service barriers to panelboards reduces the likelihood of electric shock but does not reduce the severity of an arc flash incident.

 

[iwire]

That's a lot less onerous than the Canadian metal enclosures over the entire line side.

I want the Canadian version.

 

[iwire]

These barriers appear to be for added protection while the equipment is being verified as de-energized.
They definitely are not intended to allow 'live work' inside the panel.

From the provided link:

I agree they are worthless which was my point.

 

[tom baker]

So if they have been required for switchgear and switchboards (which I don't install) what do those barriers look like?

 

[al hildenbrand]

So if they have been required for switchgear and switchboards (which I don't install) what do those barriers look like?