In ,
jamesgangnc typed:
On Jun 14, 10:39 am, "Twaynes"
wrote:
,
typed:





Here's the application. I have a solar pool controller
located outside a single family house that puts out 24V
which will go to a relay located in the attic. The
controller is about 6 feet away from the house, so the
circuit will go from the relay in the attic, down the
outside of the house behind a pipe, but then needs to go
underground for the last 6 feet to the pool controller.
Besides the relay circuit, there will also be 4 other
wires for sensors. So, I need a 20 gauge cable with 6
or 7 conductors.

I've searched high and low online and can't find any wire
that will meet code. Everything that is CL2 or CL2X
rated, eg thermostat cable is NOT rated for direct burial.
And anything that is rated for direct burial, eg
irrigation/sprinkler cable, is NOT rated CL2. Anyone know
of any such cable that is 20 or 18 gauge? And am I right,
per NEC 725 that I can't just use the sprinkler cable for
the whole run?

What are my other options? I'm thinking I could mount a
small weatherproof box on the side of the house near
ground level and transition from CL2 to sprinkler wire
for the last 6 feet underground. Or can I use the CL2
thermostat type wire and then put it inside PVC conduit
for the underground run avoiding the splice?
Is there a flexible PVC I could run, like is flextight
allowed underground for low voltage?

This has to pass electrical inspection as other work is
being done too.

And this got me thinking. All the irrigation installs
I've seen just use irrigation cable that is not CL rated
and yet they bring it inside garages, basements, etc.
That would seem to be a technical violation of NEC 725,
no? Do they just get away with it because it's a short run
and/or there is no electrical inspection done?

Look into phone wiring; I don't know what it's called but
they do have 24 Ga weather cable; not sure about buried
for a cable with that few pairs, but might be something
useful. Smallest I've noticed, IIRC, is 12 pair 24ga
twisted for underground use.

HTH,

Twayne`- Hide quoted text -

- Show quoted text -

24 is a bit light for any distance/current.

Duhh, it meets or exceeds what the OP said he wanted.