Bonding Metal Siding

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Re: Bonding Metal Siding

Ive did a paint booth once and had to bond the main beam with a cadweld type bond, this apparently bonded all metal attached. This was taking from the drawings and a govn. job.
 
Re: Bonding Metal Siding

Does anyone bond metal siding on a dwelling? If so, what fittings do you use?
This is taking things a little to far, whats next bond the metal windows, stairail, metal doorknobs, and last bond my heavy metal cd collection :confused: . The fitting would be a "metal siding bonding fitting" I don't know :confused: .
 
Re: Bonding Metal Siding

I can see it now we have to bond all the metal studs and the metal track the studs are screwed to because you cannot use sheet metal screws as a bonding means because our metal boxes are screwed to the metal studs and they may become energized if there is a short in the metal box.

There is NO such thing as COMMON sense.
 
Re: Bonding Metal Siding

we have to bond all the metal studs and the metal track the studs are screwed to because you cannot use sheet metal screws as a bonding means because our metal boxes are screwed to the metal studs and they may become energized if there is a short in the metal box.
Try saying that three times real fast :p
 
Re: Bonding Metal Siding

Think about the way the siding is interlocked. How would one go about actually bonding the siding, so all of the siding is bonded?


The real question is ... what is the need?
 
Re: Bonding Metal Siding

Plenty of ways you could do it but i don't know of any that meet nec shots of a lug with bolt and a nut.Why are you doing this ?
 
Re: Bonding Metal Siding

There is no real metal to metal path in a typical siding installation. If you want or need to bond the siding, you would have to bond each and every piece.
Don
 
Re: Bonding Metal Siding

An electrician was drilling a hole in metal siding one time and wound up drilling through a wire this did not cause the circuit breaker to trip but it did cause the siding to become energized. The reason I know that it was energized was because an arc develope at one of the gutter connections. I was just curious if anybody ever tried to bond metal siding and what methods they used to do it?

Would the FPN in 250.116 apply to metal siding with lights mounted to it?
 
Re: Bonding Metal Siding

You can bet there is metal siding energized at this very moment somewhere in this great country of ours. NO I am not looking for a code change!
 
Re: Bonding Metal Siding

Zifkwong wrote:I was just curious if anybody ever tried to bond metal siding and what methods they used to do it?
If you live in a dwelling with aluminum siding, you might be a red neck..

If you live in trailer park in Florida, where your neighbors get struck by lightning, you might be a red neck..

But, you might also be interested in NFPA 780 and UL 96A.
..Other rooftop equipment constructed of metal that fails to meet the minimum thick?ness requirement must not only be connected to the light?ning protection system, but also be equipped with conduc?tors and air terminals for adequate protection.
NFPA - Fire from on High (Roof Level)
 
Re: Bonding Metal Siding

Originally posted by butch:
Ive did a paint booth once and had to bond the main beam with a cadweld type bond, this apparently bonded all metal attached. This was taking from the drawings and a govn. job.
Well that answers the metal siding question. :p


There is no requirement, need or reasonable way to bond metal siding other than installing it on a steel building that is effectively bonded.

As far as bonding siding within five feet of a pool it would be required but I bet when done it would not be done correctly.
 
Re: Bonding Metal Siding

I have solar electric cells on my roof, and yes, I am going to bond the roof. I consider the metal roof to be "likely to become energized" because there is juice up there. If there wasn't any juice nearby, I wouldn't bother.
 
Re: Bonding Metal Siding

There is one jurisdiction in our area that decided to require that metal siding be bonded to the service equipement. The problem was that they forgot to insert the word "metal" in the requirement. The requirement simply said that on a dwelling the siding must be bonded.... I was in a meeting with a fellow who was furious because a job had just failed inspection because the vinyl siding was not "bonded"! He asked, "what am I supposed to use, a non-metallic lug?"!
 
Re: Bonding Metal Siding

In my area they are requiring bonding of ALL metal parts around pools and hot tubs. This includes gutters, windows, doors, siding, and of all things door thresholds. :confused:
 
Re: Bonding Metal Siding

Originally posted by marinesgt0411:
I can see it now we have to bond all the metal studs and the metal track the studs are screwed to because you cannot use sheet metal screws as a bonding means because our metal boxes are screwed to the metal studs and they may become energized if there is a short in the metal box.

There is NO such thing as COMMON sense.
Don't laugh too much on that. We had to do that on a job about 10 years ago. It was for an internet POP site. The bldg had raised floor and underneath we had to tear out the sheetrock at all corners and bond around them with #8 awg jumpers with T&B 2-hold lugs through bolted into the studs. I just LMAO when I hear the EE wanted that done. Okay, here's your change order.


Their reason being was that they didn't want any EMF's in the room and the foil backed rock on the metal studs wasn't enough, I guess. :roll:


There wasn't any metal in that place that wasn't bonded back the the MGB.
 
Re: Bonding Metal Siding

quote:
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Originally posted by Jhr:
Try saying that three times real fast
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Thatthatthat.

How's that?
I KNEW Larry would do that, AGAIN! :D

By Jim:How do you bond the metal screws in a wooden deck?
You exothermic weld a #500 Kcmil lug to each screw and run a # 1/0 bonding jumper to each screw, making sure that the D in deck does not interfere with the conductivity of the 1/0 bonding jumper, then you wake up from this goofy dream and find yourself coming back late from your 30 minute lunch break :D :D
 
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