running power to detached garage / need need help w/ messenger wire

mechanic30

Running power to detached garage. Using 4446 ser wg wire for 240v 70 amp service. It weighs .22 lb per ft. Plan on running it 250 ft across 4 16ft 4x4 posts. (6 points total including block house and block garage.) So there will be 5 50' spans. My question is this - do I need to use messenger cable, and if so what size.? I imagine that I do, and because the wire is so light I dont think I will need to anything too heavy. What do I need to use to attach the messenger wire to the poles? What do I attach the 4-4-4-6 ser wg to the messenger wire with, and how close together do they need to be?


Any info will be great, thanks!

joecaption

Go back and add your location to your profile. Yes it makes a big differance, codes differ by locaation.

Missouri Bound

Not to disuade you, but is there any reason you aren't burying cable to the garage?

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mechanic30

I live in Fl. I already purchased the wire. It is ser wg wire and not rated for burial, even in conduit. It is, however, sunlight resistant, and designed for the purpose I need. I was able to get this 4-4-4-6 for under $300. I would have to pay double that for wire that I would be able to bury, plus the cost of conduit, and I would have to replace every install the stupid gcfi outlets everywhere. Not to mention that the ground between the two buildings is very rocky and would be a huge pain in the a to dig 18" deep.

Just need to know what kind of wire to use as messenger and how to attach.
Thanks!