patsy
Member
- Location
- new jersey
what gauge guide wire should i use to support the service mast to the roof 200 amp service 2" rigid pipe
service mast guide wire?
- Thread starter patsy
- Start date
- Status
e57
Senior Member
- Location
- San Francisco, CA
I've never used wire - I get these kits for use with 1/2" RMC.
buck33k
Senior Member
- Location
- Washington state and North Carolina
Maybe there are local rules which might apply to you?
For masts that require this kind of support, Wa. specs "#6 copperweld, aircraft cable or equal."
For masts that require this kind of support, Wa. specs "#6 copperweld, aircraft cable or equal."
mjf
Senior Member
Buck Parrish
Senior Member
- Location
- NC & IN
In NC we go under ground if more then 3-4 ft above the roof line. Home owner pays for it directly to the poco.
Most of us temporary cable from the existing old mast to the new meter.
Most of us temporary cable from the existing old mast to the new meter.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Here, POCO says to use 3/4" EMT, thru bolted thru framing members.
Why does it look like that EMT is attached to a 4" cover at the bottom of the picture? That penetration is going to leak.
growler
Senior Member
- Location
- Atlanta,GA
If it ever rained in Arizona those "Doby" mud huts would fall down.
Just a joke based on another post about "Workers from Arizona".
Buck Parrish
Senior Member
- Location
- NC & IN
Yeah , I get it " Those darn Arizonians and the Adobe huts with poles sticking through the roofs. It takes a special electrician to wire them.
e57
Senior Member
- Location
- San Francisco, CA
AND MAN WOULD IT STINK - THE WALLS ARE MADE OF DUNG!!! (Coated in lead paint if built prior to '78...)
Buck Parrish
Senior Member
- Location
- NC & IN
I've been experimenting. The standard method is to just run the bolt/all thread thru the EMT/framing and glob caulk or mastic over it. I didn't like it. It looked like hell and the 1" wide EMT din't sit square/clean enough IMO.
I wanted more surface area for the brace to sit on and I wanted the roofers to be able to take it off, re roof and replace it. The blank is bolted down with sealant under it and the brace sits on top of the nut.
3/8" hole, 3/8" all thread/bolt cranked down really tight with serious caulk under the blank.
It won't leak.
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e57
Senior Member
- Location
- San Francisco, CA
Sooner or later - everything leaks - some sooner than others. Like death and taxes - it's inevitable.
buck33k
Senior Member
- Location
- Washington state and North Carolina
Not too sold right now on the 4 sq. blank method, but good to try new things.
I remember when the cordless drill came out. Was'nt too hot on that either, but it worked out OK. Thanks for the pic 220/221.
I remember when the cordless drill came out. Was'nt too hot on that either, but it worked out OK. Thanks for the pic 220/221.
Well...yeah, but the rest pf the roof will leak before this does. I'm very conscious of roof penetrations and I avoid this back bracing whenever possible.
The thing really clamped down tight but I'm always open for new suggestions. I could have used mastic or sealant on top of it too but it looks so bad to me.
buck33k
Senior Member
- Location
- Washington state and North Carolina
Here are some prefab flashings for mast braces.
http://i158.photobucket.com/albums/t108/buck33k/004-2.jpg
http://i158.photobucket.com/albums/t108/buck33k/003-1.jpg
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e57
Senior Member
- Location
- San Francisco, CA
I rather like those....
Here are some prefab flashings for mast braces.
http://i158.photobucket.com/albums/t108/buck33k/004-2.jpg
http://i158.photobucket.com/albums/t108/buck33k/003-1.jpg
My method - A more than generous dollop of this. It's nasty lookin'....
PetrosA
Senior Member
- Location
- Lancaster, Pennsylvania
This stuff works very well, comes in gallon cans or standard caulk gun tubes and it's clear
http://www.sashcosealants.com/Home_Improvement/Through_The_Roof.aspx
http://www.sashcosealants.com/Home_Improvement/Through_The_Roof.aspx
kwired
Electron manager
- Location
- NE Nebraska
How strong the support wire or if one is needed is not determined by NEC. It will depend on how much of a load will be required to be supported and the length and size of unsupported mast. I would guess that the size and type of messenger wire in the drop would be heavy enough since it is supporting the drop in the first place.
Have seen masts that are practically right next to the pole the drop is fed from. The short drop doesn't put much load on the mast at all. In fact the drop runs 10 - 15 degrees from being vertical to get to the attachment on the pole and the pole attachment carries all the weight. the mast is only loaded when the wind blows.
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