theoldwizard1
Well-known member
Does the equivalent of UF-B (direct burial) exist in 18AWG ? Must have 600V rating.
UF-B equivalent in 18 AWG
- Thread starter theoldwizard1
- Start date
wyliesdiesels
Well-known member
Nope read above
rlitman
Well-known member
Google search for "direct burlal 18 600v" found me this:
www.wireandcableyourway.com
So, it must exist.
Belden A02182R, 18/2C Type TC Cable, Unshielded, Direct Burial, 600V
New stock due in February 25, 2021
www.wireandcableyourway.com
OP
theoldwizard1
Well-known member
Never heard of Tray Cable with 600V and a direct burial rating !Belden A02182R, 18/2C Type TC Cable, Unshielded, Direct Burial, 600V
New stock due in February 25, 2021
rlitman
Well-known member
DB and sunlight resistant tray cable seems to go hand in hand, as does 600V. 18AWG tray cable is a little odd, but not unheard of.
BTW, mini-split hookup wire is just repackaged tray cable. I found DB sprinkler wire too, but that seems to come in only a 30V rating.
rlitman
Well-known member
Aside from TFFN, you've got TEW and MTW, and I'm sure others, but while all of these may likely be rated for wet locations, they all require conduit, so I'm not sure what you're getting at. OP is looking for DB, so I think TC is the ticket.
klassenl
Well-known member
Strictly conjecture: if you're looking for 600v rating you will have to go to a #14. Here in Canada I would order 2c #14 TECK90.
OP
theoldwizard1
Well-known member
Voltage rating has nothing to do with conductor size, unless it is some obscure code requirement. Voltage rating is related to the insulation
walta
Well-known member
I am not the guy who memorized the code book but I recall class 1 wiring had to be 14 gage or larger wires. Class 2 can be small gage wires but are limited to less than 24 volts and 100VA.
So I do not think you can be code compliant need for 18 gage 600v direct burial wire.
Care to tell us about your project?
Walta
So I do not think you can be code compliant need for 18 gage 600v direct burial wire.
Care to tell us about your project?
Walta
klassenl
Well-known member
Yes indeed. However what I failed to articulate is that where I am I don't think I would find a 600v rated cable in a size less than #14.
rlitman
Well-known member
This is only partially correct. While class 2 is limited to carry 60V, there are plenty of situations where you might need to run class 2 wiring through a class 1 wiring space. In those situations, it is the insulation class that matters, not to keep the 48V (or less in), but to keep the 600V out. An example (not a good one, but a valid one), is 600V rated Cat 6 wire that due to it's rating is allowed to share a conduit with 240V wiring). This product for example is 23 AWG class 2 rated for 600V:
Category 6 Cable - 7953A
www.belden.com
POE often reaches 57V. Telephone ring signals can exceed 130V, and most certainly are class 2, so I don't know how the rules are applied there, but I think what it boils down to is that the power output is inherently not likely to start fires.
Additionally, while we're on the subject of code compliance, code doesn't apply universally. NEC is there to protect building wiring, but wiring within appliances falls under UL, not NEC, and you cannot be telling me that wires carrying 120V are never to be found below 14 AWG. Heck, the UL listed transfer switches and UPS gear I work with have lots of 18 AWG wiring (mostly AWM or MTW rated) carrying 480V.
Last edited:
OP
theoldwizard1
Well-known member
Read #5 !