panel mounting
- Thread starter clate
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bphgravity
Senior Member
- Location
- Florida
Re: panel mounting
Article 312.2(A) states that enclosures should be mounted so that there is at least 1/4" of airspace between the enclosure and the wall in damp and wet locations. If the location is not a damp or wet location, the enclosure should be mounted firmly secured to the surface it is mounted per Article 110.13(A).
Article 312.2(A) states that enclosures should be mounted so that there is at least 1/4" of airspace between the enclosure and the wall in damp and wet locations. If the location is not a damp or wet location, the enclosure should be mounted firmly secured to the surface it is mounted per Article 110.13(A).
bphgravity
Senior Member
- Location
- Florida
Re: panel mounting
Yes, you will notice that most enclosures listed for use in wet and damp (outdoors) locations have 1/4" protrusions (feet) at the mounting holes for this exact purpose.
Using wood is going to be a judgment call and more of a building code issue. It would probably better to use a metallic strut (unistrut, kindorf) for this purpose.
Yes, you will notice that most enclosures listed for use in wet and damp (outdoors) locations have 1/4" protrusions (feet) at the mounting holes for this exact purpose.
Using wood is going to be a judgment call and more of a building code issue. It would probably better to use a metallic strut (unistrut, kindorf) for this purpose.
pierre
Senior Member
- Location
- Westchester County, New York
Re: panel mounting
In southern NY, plywood is the predominant mounting method.
Pierre
In southern NY, plywood is the predominant mounting method.
Pierre
radiopet
Senior Member
- Location
- Spotsylvania, VA
Re: panel mounting
In our area we have to use TREATED PLYWOOD for mounting panels to on a block wall.
In our area we have to use TREATED PLYWOOD for mounting panels to on a block wall.
luke warmwater
Senior Member
Re: panel mounting
We use (4) 4-foot pressure treated 2x4's fastened horizontal on the wall and then a full sheet (4'x8') of 3/4" plywood screwed to them.
We use (4) 4-foot pressure treated 2x4's fastened horizontal on the wall and then a full sheet (4'x8') of 3/4" plywood screwed to them.
Re: panel mounting
Some places require spacing off concrete. I think the specify wood but can't say now. Our co allways does it. Depending on the outside wall thickness sometimes just a sheet of plywood other times a few 2x4 and plywood. The panels always look in better shape if they were spaced off the wall. In the big developments they never space the panels off the walls.
As for being treated wood or strut I'm sure it's better but I don't feel It's nessisary. Up into to 1980's homes were built with standard wood on the foundation. Do you see that much of a rott problem? How many years do you expect out of a residential panel 40-60?
Tom
Some places require spacing off concrete. I think the specify wood but can't say now. Our co allways does it. Depending on the outside wall thickness sometimes just a sheet of plywood other times a few 2x4 and plywood. The panels always look in better shape if they were spaced off the wall. In the big developments they never space the panels off the walls.
As for being treated wood or strut I'm sure it's better but I don't feel It's nessisary. Up into to 1980's homes were built with standard wood on the foundation. Do you see that much of a rott problem? How many years do you expect out of a residential panel 40-60?
Tom
O
oliver100
Guest
Re: panel mounting
What would be the mounting methods for flush panel with surface cover?
What would be the mounting methods for flush panel with surface cover?
jimwalker
Senior Member
- Location
- TAMPA FLORIDA
Re: panel mounting
In FL. we just tapcon it to block wall,but then we don't have basements.
In FL. we just tapcon it to block wall,but then we don't have basements.
coppertreeelectric
Senior Member
Re: panel mounting
Most panels these days are mad so that when you mount the panel on the stud it still leaves a 1/4" gap at min from the exterior wall.
Scew the panel to the studs....
Most panels these days are mad so that when you mount the panel on the stud it still leaves a 1/4" gap at min from the exterior wall.
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Re: panel mounting
On that note, it isn't an NEC violation to have the panel mounted in a 2x4 framed wall, such that it has that 1/4" gap behind the panel?
We've had to fir our panels out--I assumed it was an insulation standard, to avoid a gap behind the panel that would go uninsulated and cause that flavor of trouble. I talked to the GC on our job today, and the AHJ we're dealing with told him that it was to protect the home runs going into the panel. Sorry, but that's not code, right?
Am I missing something, or is my wrath going to be unleashed for good reason?
On that note, it isn't an NEC violation to have the panel mounted in a 2x4 framed wall, such that it has that 1/4" gap behind the panel?
We've had to fir our panels out--I assumed it was an insulation standard, to avoid a gap behind the panel that would go uninsulated and cause that flavor of trouble. I talked to the GC on our job today, and the AHJ we're dealing with told him that it was to protect the home runs going into the panel. Sorry, but that's not code, right?
Am I missing something, or is my wrath going to be unleashed for good reason?
busman
Senior Member
- Location
- Northern Virginia
- Occupation
- Master Electrician / Electrical Engineer
Re: panel mounting
Also, having a good sized piece of plywood behind the panel lets you use staples to secure romex, bx, etc within the required 12 inches.
Mark
Also, having a good sized piece of plywood behind the panel lets you use staples to secure romex, bx, etc within the required 12 inches.
Mark
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