Pulling 6-6-6 w/ ground in 1-1/4" conduit

[JethroB]

I had two 100 ft runs of direct bury trenched in at 30” to a new well and barn recently. You mention conduit around here and folks (contractors, electricians, electric Co-op) think you are nuts. Sandy loam and with no rocks.

 

[grsthegreat]

Here, it’s rocks, rocks and more rocks

 

[grsthegreat]

It does remind me. After the individual alluminum conductors for our main 200 amp service (after the meter) have been in the ground since 72, I should do a high voltage insulation, to ground test. Like I said, you could loose a lot of power over time through a leak.

I installed a NMW CU 6/3 in a 3" super duct for another project, maybe 500 feet. I can't see why that wouldn't be allowed.

NMW Wire is rated indoor only. Period. It may work out in that conduit, but not to code

 

[Industrial Toys]

I thought Non Metalic Wet was direct burial. Although I never have, but put it in pipe.

NMD (Dry) Romex for Indoor.

 

[paulsharvey]

I had two 100 ft runs of direct bury trenched in at 30” to a new well and barn recently. You mention conduit around here and folks (contractors, electricians, electric Co-op) think you are nuts. Sandy loam and with no rocks.

Its all sand here too, but telecoms do service direct bury, and everything bigger goes in conduit it seems.

 

[grsthegreat]

NMD Is a Canadian Wire. Suppose to be same as NM/G is wire. NMW is also a Canadian reference. NMB is industry standard name for basic household romex. The type of romex to be used underground is called UF

It all gets quite confusing once you cross the border.

 

[Diggin It]

I do some stupid stuff when I think it most likely won't matter. Recently ran a new LED yard light, only something like 20 watts. Ran 30' of 14/2 w/gnd NM (Yes Romex) in 3/4 PVC underground. It's slaved off a GFCI, so in a few years when/if it ages and/or degrades and gets wet, all it will do is trip the GFCI.

 

[Industrial Toys]

I once had access to unlimited alarm wire. Tel Quad. Ran it 1000 down the driveway buried, in thin plastic pipe. Ran a hundred volts to it through an isolation transformer. First ran a 12 volt bulb at the gate with another transformer but they cost money and don't last long, so later a compact florescent, Worked for decades! Stuff I would never do for most anyone else.

Most of my heavy underground runs I made are for overcoming voltage drop, not the current capacity of the wire. So heating, propably isn't even an issue and they SHOULD derate cable capacity for this application (If you ask me). It's always been a problem attaching such heavy cable to light breakers!

 

[3Ts]

Why not use the "circuit breaker terminal lugs", they come in the style with prongs so they can be inserted under the circuit breaker's screw and stick the larger wire into the hole in the lug.

 

[Industrial Toys]

Don't quite know what you mean. Sure, you could put a single breaker into an enclosure and have lugs, but more often it's going into an existing panel.