Service Mast as support.

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arnettda

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230.27 says when using a service to support service drop conductors it needs to be of adequate strength. Do I need to use 2" or could I get by with 1.25 or 1.5 RMC. I always support my service mast with guy wires.
I am Told IMC is a cheaper option than RMC and is actually stronger?
Thanks
 
arnettda said:
230.27 says when using a service to support service drop conductors it needs to be of adequate strength. Do I need to use 2" or could I get by with 1.25 or 1.5 RMC. I always support my service mast with guy wires.
I am Told IMC is a cheaper option than RMC and is actually stronger?
Thanks
Click to expand...
My advice is to check with your POCO. Many have a minimum size requirement. The POCO here has a 2" minimum, RMC or IMC.
 
1.5 bends

1.5 bends

From storm experiance...... when tree limb greater than 4in diameter hits the O.H. lines, 1.5 RMC bends nicely ( better than a greenlee 555). When a Cement truck snags a 2in RMC , It rips up the roofing and tears down the side of the house. If you are lucky the service lines rip in half. Very seldom do POCO lines fail at the point of attachment on the poles.

DENNIS
 
As suggested earlier ask your POCO.

here locally 1.25" IMC is minimum for overhead if the service attaches to the mast.
 
edward said:
As suggested earlier ask your POCO.

here locally 1.25" IMC is minimum for overhead if the service attaches to the mast.
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When was last time you saw service drops encased in 2 inches of ice where you are at?:)

I think they should have break away devices for when the storm drops the tree limb on it or the ice becomes too heavy instead of ripping things off the house and or utility pole.

I have seen the mast stay in place and the pole is what breaks also, but not as often as the mast causes damage to the house.
 
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