Is this OK?

[Michael Larson]

Sometimes you just have to wonder at what you see.

[Eric C. Van De Ven]

That looks like a satellite cable.
Try this:

[Michael Larson]

Originally Posted by evandeven

That looks like a satellite cable.
Try this:

Yep.

Here is the other end.

[Robert J. OConnor]

Originally Posted by mlarson

Here is the other end.

I noticed they used a tee at the bottom of the riser, which should have been an elbow so it doesn't trap moisture.

[Michael Larson]

Originally Posted by roconnor

I noticed they used a tee at the bottom of the riser, which should have been an elbow so it doesn't trap moisture.

There is a drain hole in the tee and this is a very common installation.

[Robert J. OConnor]

Is that just capped with a hole in the tee? It didnt look like a "drain tee" ... typically only used for Z vent locally.

[Michael Larson]

Originally Posted by roconnor

Is that just capped with a hole in the tee? It didnt look like a "drain tee" ... typically only used for Z vent locally.

I see these often Robert.

Nothing unusual.

It's not a condensing furnace.

[Linas Dapkus]

Originally Posted by mlarson

Sometimes you just have to wonder at what you see.

Caulk shrinkage. Needs to be recaulked.

[Michael Larson]

Originally Posted by ldapkus1

Caulk shrinkage. Needs to be recaulked.

Maybe add some foil tap too

[Robert J. OConnor]

Originally Posted by mlarson

It's not a condensing furnace.

I would hope it's not, since that is B-Vent ...

Thats what makes me question the use of a tee with provisions for drainage. I would typically only see that for a chimney/flue on condensing equipment. A B-Vent chimney with standard equipment would typically just have an elbow at the base, since there isn't a significant concern about condensate or moisture at the chimney bottom with a proper rain cap.

I would be concerned with field drilling a hole in the side of a manufactured product, no matter how common it was. And moisture would have to sit in the base, and then spill over into the double wall space before it even reached the hole. Not good, as any minor amounts of moisture in conventional venting should drain back to the equipment where it's burned off (from mfr instructions on every standard furnace/boiler I have worked on).

Attached is a pic of a manufactured vertical drain tee typically used for mid-efficiency equipment (Z Vent), with provisions for positive drainage, with no trapped moisture.

Just my take on things ...
.

[Michael Larson]

I have never seen the one you pictured, Robert.

I have seen the one I did many many times.

FWIW, the furnace was a mid efficiency draft assisted unit.

[Robert J. OConnor]

Thats a manufactured specialty product, but I probably would be okay with something similar that is field assembled ... say a field drilled hole in a cap at the base of the tee ... not the tee itself. And I would still be concerned with access to the tee cap in order to clean out any debris.

P.S. How often do you see double-lug neutral wires in a panel ...

[Roy D. Cooke, Sr]

Originally Posted by roconnor

P.S. How often do you see double-lug neutral wires in a panel ...

Too often about 20% I think ... Roy

Many do not know this can burn out equipment more often the Double Taps on the hot wires

[Michael Larson]

Double lugged neutrals are a problem.

Neutral paired with safety ground of same circuit. Not so much.

[Robert Meier]

Originally Posted by mlarson

Double lugged neutrals are a problem.

Neutral paired with safety ground of same circuit. Not so much.

Nevertheless still an NEC violation.