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#185768 - 03/26/09 12:08 PM XHHW sunlight Resistant Rating???
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
Does 4/0 XHHW have to be XHHW-2 to have sunlight resistant rateing??? I think it does 2007 UL White book Page 366.
Someone wanna conferm for me.
Yoopers
I;d didn't see anything in 2005 Code 310.13.

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#185769 - 03/26/09 12:30 PM Re: XHHW sunlight Resistant Rating??? [Re: Yoopersup]
Ralpha494 Offline
Member

Registered: 05/19/04
Posts: 71
Loc: Pewaukee,WI,USA
Page 58, 2008 White Book looks like it says they both have to have it written on the jacket in the notes.

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#185770 - 03/26/09 12:34 PM Re: XHHW sunlight Resistant Rating??? [Re: Ralpha494]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
Only got 2007 White Book can you reference there???
thanks for looking.

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#185800 - 03/28/09 08:30 AM Re: XHHW sunlight Resistant Rating??? [Re: Yoopersup]
KJay Offline
Member

Registered: 11/27/07
Posts: 763
Loc: MA, USA
Originally Posted By: Yoopersup
Does 4/0 XHHW have to be XHHW-2 to have sunlight resistant rateing??? I think it does 2007 UL White book Page 366.
Someone wanna conferm for me.
Yoopers
I;d didn't see anything in 2005 Code 310.13.


I doesn't seem so, based on what I could find.
It appears that the cable or outer sheath may just need to be marked as sunlight resistant.
310.8 Locations in the 2008 NEC lists wire types suitable for dry, damp or wet locations, but has additional requirements for sunlight resistance.
According to the UL White Book, XHHW is 90-degree C rated for dry locations and 75-degree for wet locations, While XHHW-2 is 90-degree C rated for both wet and dry locations.
I highlighted the only areas I could find in the UL White Book that seem to reference XHHW cables and/or sunlight resisitance.

[p.386 2008 UL White Book]

THERMOSET-INSULATED WIRE (ZKST)
GENERAL
This category covers thermoset-insulated wire and cable (tabulated below)
which is flame retardant and rated 600 V, except for Types RHH, RHW and
RHW-2 which may be rated 2000 V. The voltage rating is marked on the
outer surface of the wire or cable.
PRODUCT MARKINGS
RHW — Indicates a single conductor having a thermoset insulation, with
or without a nonmetallic covering, rated 75°C dry, 75°C wet.
RHW-2 — Indicates a single conductor with the same description as Type
RHW, except that it is rated 90°C dry, 90°C wet.
RHH — Indicates a single conductor with the same description as Type
RHW, except that it is rated 90°C dry only.
XHH — Indicates a single conductor having a cross-linked synthetic polymer
insulation with no overall covering provided, rated 90°C dry.
XHHW — Indicates a single conductor with the same description as Type
XHH, except that it is rated 90°C dry, 75°C wet.

XHHW-2 — Indicates a single conductor with the same description as
Type XHH, except that it is rated 90°C dry, 90°C wet.
SA — Indicates a single conductor having thermosetting silicone rubber
insulation and a nonmetallic covering rated 90°C dry, general use, 200°C
dry, special applications.
SIS — Indicates a single conductor having thermosetting insulation with
no overall covering provided rated 90°C dry, for switchboard wiring only.
D — Used as a suffix indicating a twin wire having two insulated conductors
laid parallel under an outer nonmetallic covering.
M — Used as a suffix indicating a cable having two or more insulated
single conductors twisted together under an outer nonmetallic covering.
This wire, in sizes mentioned below, may employ copper, aluminum, or
copper-clad aluminum conductors. Wire with copper-clad aluminum conductors
is surface printed ‘‘Cu-Clad Al’’ or ‘‘AL (CU-CLAD).’’ Wire with
aluminum conductors is surface printed ‘‘AL.’’
In addition to the required AWG or kcmil size, the metric equivalent may
be marked on the wire, e.g. ‘‘6 AWG (13.3 MM2)’’ or ‘‘13.3 MM2 (6 AWG).’’
Types RHH, RHW, RHW-2, XHH, XHHW, XHHW-2 and SA are Listed in
sizes 14 AWG through 2000 kcmil copper, and 12 AWG through 2000 kcmil
aluminum or copper-clad aluminum. Type SIS is Listed in sizes 14 through
4/0 AWG copper, and 12 through 4/0 AWG aluminum or copper-clad aluminum.
Thermoset-insulated Wire (ZKST)−Continued
Wire and cable employing compact-stranded copper conductors is so identified
directly following the conductor size wherever it appears (surface, tag,
carton or reel) by ‘‘compact copper.’’ The abbreviations ‘‘CMPCT’’ and ‘‘CU’’
may be used for compact and copper, respectively.
Tags, reels and cartons for products employing compact-stranded copper
conductors have the marking: ‘‘Terminate with connectors identified for use
with compact-stranded copper conductors.’’
Wire bearing multiple type designations is suitable for the temperature
associated with each use. For example, a wire marked ‘‘RHH or RHW’’ is
suitable for 90°C in dry locations, and 75°C in wet locations.
Wire marked ‘‘gasoline resistant’’ has been tested at 23°C when immersed
in gasoline. Wire marked ‘‘Oil Resistant I’’ and ‘‘Oil Resistant II’’ has been
tested for immersion in mineral oil at 60°C and 75°C, respectively.
Wire and cable marked ‘‘Cable Tray Use’’ complies with a Vertical-Tray
Flame Test. Wire and cable marked ‘‘Sunlight Resistant’’ complies with an
artificial weathering test.
The ‘‘Cable Tray Use’’ marking, with or without
the ‘‘Sunlight Resistant’’ marking, pertains to single conductor sizes 4
through 1 AWG for grounding conductors only, single conductor sizes 1/0
AWG and larger, and all sizes of multiconductor Types RHH, RHW, RHW-2,
XHH, XHHW and XHHW-2. Wire Types RHW, RHW-2, XHHW and
XHHW-2 intended to be installed on a messenger may be marked ‘‘Sunlight
Resistant’’ in all sizes.
Wire marked ‘‘VW-1’’ complies with a Vertical Flame Test; all others comply
with a Horizontal Flame Test.
Wire that complies with the Limited Smoke Test requirements specified in
UL 1685, ‘‘Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical
and Optical-Fiber Cables,’’ is surface marked with the suffix ‘‘-LS.’’
Wire and cable marked ‘‘-40 C’’ complies with a cold impact test conducted
at that temperature. This does not necessarily mean that the cable
can be easily installed at that temperature. Different installation conditions
and configurations require that care be taken when installing cable at low
temperatures.
Submersible Water Pump Cable — Indicates multiconductor cable in
which two, three or four Type RHW, RHW-2, XHHW or XHHW-2 conductors
are provided in a flat or twisted assembly. The cable is Listed in sizes
from 14 AWG through 500 kcmil copper, and from 12 AWG through 500
kcmil aluminum or copper-clad aluminum. The cable is tag marked ²For
use within the well casing for wiring deep-well water pumps where the
cable is not subject to repetitive handling caused by frequent servicing of
the pump units.² The surface of the wire may also be marked ‘‘Pump
Cable.’’ The cable has not been investigated for direct burial in the earth
unless the single conductors carry an additional ‘‘Type USE’’ or ‘‘Type USE-
2’’ marking.
ADDITIONAL INFORMATION
For additional information, see Electrical Equipment for Use in Ordinary
Locations (AALZ).
REQUIREMENTS
The basic standard used to investigate products in this category is UL 44,
‘‘Thermoset-insulated Wires and Cables.’’
UL MARK
The Listing Mark of Underwriters Laboratories Inc. on the attached tag,
the reel, or the smallest unit container in which the product is packaged,
with or without the UL symbol on the product, is the only method provided
by UL to identify products manufactured under its Listing and Follow-Up
Service. The Listing Mark for these products includes the UL symbol (as
illustrated in the Introduction of this Directory) together with the word
‘‘LISTED,’’ a control number, and the product name as appropriate:
Thermoset-insulated wire that contains copper or copper-clad aluminum
conductors has the product name ‘‘Insulated Wire’’; thermoset-insulated
wire that contains aluminum conductors has the product name ‘‘Insulated
Aluminum Wire.’’

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#185808 - 03/28/09 07:13 PM Re: XHHW sunlight Resistant Rating??? [Re: KJay]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
Thanks!!
Thats a Lotta typing!!!!
What your saying then is all XHHW is Sunlight Resistance then.

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#185818 - 03/29/09 07:49 PM Re: XHHW sunlight Resistant Rating??? [Re: Yoopersup]
KJay Offline
Member

Registered: 11/27/07
Posts: 763
Loc: MA, USA
Originally Posted By: Yoopersup
Thanks!!
Thats a Lotta typing!!!!
What your saying then is all XHHW is Sunlight Resistance then.


Nah, I have the White Book as a .pdf, so I just copied and pasted the entire page so you could read the whole thing if you wanted.

From what I gather, the indication seems to be that the wire or outer sheath of cables would still have to be marked as sunlight resistant, regardless of the insulation type.

But, I must say that lately I have been having much better luck finding specific product listing information directly from the manufactures websites than I have from the UL White Book, so in this case, maybe the best thing to do would be to check with the wire manufacture to see if that particular wire has sunlight resistance as part of it's listing.

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#185822 - 03/30/09 11:01 AM Re: XHHW sunlight Resistant Rating??? [Re: KJay]
SteveFehr Offline
Member

Registered: 03/19/05
Posts: 1192
Loc: Chesapeake, VA
Contact the manufacturer, they'll know. The sales staff might not, but they'll generally give you contact information for an engineer or someone else who lives and breathes the stuff and loves talking about it. We had some cable specially manufactured for us and ran into some issues with this. Apparently the chemical they used as UV inhibitors in thermoset jackets makes the cable black (hence why so many cables are black), and when other colors were specified, it lost sunlight resistance.

Even if you're not using the cables outdoors or near a window... how are you storing it, is the reel sitting outside, or perhaps near the window of your van? It's an important consideration to make.

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#185829 - 03/31/09 07:49 AM Re: XHHW sunlight Resistant Rating??? [Re: SteveFehr]
earlydean Offline
Member

Registered: 12/22/03
Posts: 749
Loc: Griswold, CT, USA
Only those conductors that are marked as "sunlight resistant" are actually sunlight resistant (the insulation type is not an indicator of UV resistance). If you use SEU for a overhead service, the individual conductors are PV resistant (per UL White book). If you use scrap building wire for OH service, then as the years go by, the insulation falls off.
_________________________
Earl

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#186139 - 04/21/09 02:58 PM Re: XHHW sunlight Resistant Rating??? [Re: earlydean]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
Just was told by a Electrical warehouse that they don't make XHHW any more just XHHW-2.
Anyone else herad that???
Yoopersup

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