12:29PM | 02/05/00
Member Since: 02/04/00
2 lifetime posts
How can I tell the difference between 60 degree wiring and 90 degree wiring?


12:50PM | 02/05/00
Member Since: 10/24/99
31 lifetime posts
Dear Shuanm:
Here is the article in the 1999 National Electrical Code Book (the latest edition)
(personal observation: the indivual contuctor of 90º wire is very shinny)
310-11. Marking
Required Information. All conductors and cables shall be marked to indicate the following information, using the applicable method described in
1. The maximum rated voltage for which the conductor was listed
2. The proper type letter or letters for the type of wire or cable as specified elsewhere in this Code
3. The manufacturer’s name, trademark, or other distinctive marking by which the organization responsible for the product can be readily identified
4. The AWG size or circular mil area
5. Cable assemblies where the neutral conductor is smaller than the ungrounded conductors shall be so marked
(b) Method of Marking.
(1) Surface Marking. The following conductors and cables shall be durably marked on the surface. The AWG size or circular mil area shall be repeated at intervals not exceeding 24 in. (610 mm). All other markings shall be repeated at intervals not exceeding 40 in. (1.02 m).
a. Single- and multiconductor rubber- and thermoplastic-insulated wire and cable
b. Nonmetallic-sheathed cable
c. Service-entrance cable
d. Underground feeder and branch-circuit cable
e. Tray cable
f. Irrigation cable
g. Power-limited tray cable
h. Instrumentation tray cable
(2) Marker Tape. Metal-covered multiconductor cables shall employ a marker tape located within the cable and running for its complete length.
Exception No. 1: Mineral-insulated, metal-sheathed cable.
Exception No. 2: Type AC cable.
Exception No. 3: The information required in Section 310-11(a) shall be permitted to be durably marked on the outer nonmetallic covering of Type MC, Type ITC, or Type PLTC cables at intervals not exceeding 40 in. (1.02 m).
Exception No. 4: The information required in Section 310-11(a) shall be permitted to be durably marked on a nonmetallic covering under the metallic sheath of Type ITC or Type PLTC cable at intervals not exceeding 40 in. (1.02 m).
FPN: Included in the group of metal-covered cables are Type AC cable (Article 333), Type MC cable (Article 334), and lead-sheathed cable.
(3) Tag Marking. The following conductors and cables shall be marked by means of a printed tag attached to the coil, reel, or carton:
a. Mineral-insulated, metal-sheathed cable
b. Switchboard wires
c. Metal-covered, single-conductor cables
d. Conductors that have an outer surface of asbestos
e. Type AC cable
(4) Optional Marking of Wire Size. The information required in (a)(4) shall be permitted to be marked on the surface of the individual insulated conductors for the following multiconductor cables:
a. Type MC cable
b. Tray cable
c. Irrigation cable
d. Power-limited tray cable
e. Power-limited fire alarm cable
f. Instrumentation tray cable
(c) Suffixes to Designate Number of Conductors. A type letter or letters used alone shall indicate a single insulated conductor. The letter suffixes shall be indicated as follows:
D — For two insulated conductors laid parallel within an outer nonmetallic covering
M — For an assembly of two or more insulated conductors twisted spirally within an outer nonmetallic covering
(d) Optional Markings. All conductors and cables contained in Chapter 3 shall be permitted to be surface marked to indicate special characteristics of the cable materials.
FPN: Examples of these markings include but are not limited to “LS” for limited smoke and markings such as “sunlight resistant.”

I know there's a lot there to absorb, if you have any trouble with any of that just pick out the part you don't understand I will try to make it clearer.


04:15PM | 02/05/00
Member Since: 02/04/00
2 lifetime posts
I'm wanting to replace some old light fixtures with newer ones. The new fixtures warn "houses built before 1985 have 60 degree wire" and the fixture requires 90 degree wire. Short of calling an electrician, is there some way I can tell which wire I have? Thanks.


05:29PM | 02/05/00
Member Since: 10/24/99
31 lifetime posts
if your house wasn't built after 1985 it's a good bet that you don't have wire rated for 90º .....


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Repurpose birthday hats to create a string of lanterns for your porch, patio, or garden. Cut the tip of the cone, punch h... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon