doubling neutral wires in ground bar in panel

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I've been trying to research ground bar specs for Square D and Siemens but I can't seem to locate any that give me the info I'm looking for. Does anyone have a link where it states that more than one EGC wire can be landed under one screw ?
 
goldstar said:
I've been trying to research ground bar specs for Square D and Siemens but I can't seem to locate any that give me the info I'm looking for. Does anyone have a link where it states that more than one EGC wire can be landed under one screw ?
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To my knowledge, none of either companies USA or Canadian ground bars are permitted for that, though the neutral and ground bars sold in Europe, due to ring mains, are licensed for that. But, I have been known to be wrong before.
 
goldstar said:
I've been trying to research ground bar specs for Square D and Siemens but I can't seem to locate any that give me the info I'm looking for. Does anyone have a link where it states that more than one EGC wire can be landed under one screw ?
Click to expand...

From Lowes website:

  • The Square D By Schneider Electric ground bar kit is an important accessory in your home or business electrical load center
  • This 7 terminal ground bar kit is used in load centers, CSED devices and NQOD and NF panel boards
  • Each terminal accepts (1) #14 - #4 copper wire or (1) #12 - #4 aluminum wire, (2) #14 - #12 copper wire or (2) #12 - #10 aluminum wire
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https://www.lowes.com/pd/Square-D-Load-Center-Ground-Bar-Kit/3364860
 
Adamjamma said:
To my knowledge, none of either companies USA or Canadian ground bars are permitted for that, though the neutral and ground bars sold in Europe, due to ring mains, are licensed for that. But, I have been known to be wrong before.
Click to expand...
Almost all neutral and equipment grounding bars for panels in the USA are listed for the connection of two or three equipment grounding conductors in a single hole. They are only listed for a single grounded (neutral) conductor.
 
goldstar said:
Where did you get that obscure Code from ?
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It is a direct quote from the International Residential Code. It is the usually the ONLY one used for residential construction and contains all the codes (Building, Mechanical, Plumbing and Electrical) relevant to residential construction as deemed by "experts". It is updated every 3 years, the last one being 2018. The 2018 ICC Residential code uses the 2017 NEC for it's code sections. It is scaled down from the full NEC. Code hearings for the 2021 code were held in Columbus, OH in April.
 
HoosierSparky said:
It is a direct quote from the International Residential Code. It is the usually the ONLY one used for residential construction and contains all the codes (Building, Mechanical, Plumbing and Electrical) relevant to residential construction as deemed by "experts". It is updated every 3 years, the last one being 2018. The 2018 ICC Residential code uses the 2017 NEC for it's code sections. It is scaled down from the full NEC. Code hearings for the 2021 code were held in Columbus, OH in April.
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OK. I’ll take your word for it.):thumbsup:
 
goldstar said:
I've been trying to research ground bar specs for Square D and Siemens but I can't seem to locate any that give me the info I'm looking for. Does anyone have a link where it states that more than one EGC wire can be landed under one screw ?
Click to expand...
Square D has this information on label affixed inside the loadcenter, probably is online somewhere but not sure where.

They are rated for one or two 14 AWG conductors of the same size, and probably same type as in both must be stranded or solid. 10 AWG up to 4 AWG only rated for a single conductor. The "standard" ports only go to 4 AWG.

I believe Eaton's EGC bars are listed for three 14 or 12 AWG conductors.

Not certain about Siemens or GE, likely at least two 14 or 12 AWG on current design though.
 
infinity said:
Since you quoted me I'll assume that you are referring to the link I provided. The link is for an EGC bar not a neutral bar. ;)
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Oops, so it is. :eek:

However, a product description on a 3rd-party retailer's web app is not really suitable....there should be something in the instructions or it must be marked on the product itself to be considered in compliance with 110.14(a).
 
Craigv said:
Oops, so it is. :eek:

However, a product description on a 3rd-party retailer's web app is not really suitable....there should be something in the instructions or it must be marked on the product itself to be considered in compliance with 110.14(a).
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I agree, I put the Loews link up there so someone could lookup the model number on the Sq D website.
 
infinity said:
I agree, I put the Loews link up there so someone could lookup the model number on the Sq D website.
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Yep, and I took the bait and pulled up the boot. I did find the exact model but it had none of the info shown on he Lowe's product description. Couldn't find anything more regarding termination.

It shouldn't be this difficult. Should we simply go with 110.14(a) and if the panel label or the product doesn't have info, assume one wire only is permitted? The obvious problem with instructions is that down the road they aren't available to confirm a compliant installation.
 
goldstar said:
I've been trying to research ground bar specs for Square D and Siemens but I can't seem to locate any that give me the info I'm looking for. Does anyone have a link where it states that more than one EGC wire can be landed under one screw ?
Click to expand...

Here's one and you can see more here

Roger
 
All the Square D bars with only one size (#-14 - #4) ports available are all rated the same per port, whether it be a "ground bar" or a "neutral bar". Doesn't matter if it is QO, Homeline, I-line, EGC in a pump panel....
 
kwired said:
All the Square D bars with only one size (#-14 - #4) ports available are all rated the same per port, whether it be a "ground bar" or a "neutral bar". Doesn't matter if it is QO, Homeline, I-line, EGC in a pump panel....
Click to expand...

Yeah, which is pretty much what the link said but thanks for repeating it.

Roger
 
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