I have a big spool of 10 gauge, 4 conductor stranded wire that is
rated up to 200C. The wire is 4 conductors twisted together (no outer
shell), each conductor is stranded 10 gauge. The wires are rated up to
200C. The strands are 26 gauge.
My question is, would it be legal to use this wire for home wiring.
All wires are brown color.
Very large gague wire (#6 and greater) is usually stranded but each strand
is like a #14 by itself. I don't think the prohibition is against stranded
per se but the way it is terminated is incompatible with common devices like
20A receptacles and side screw terminals. A given receptacle will be marked
with the approved wire sizes. A compression screw terminal can generally
accept stranded wire but only one.
As for color, Code allows for non standard colors to be used as long as the
conductor is identified by the proper color tape at each end. Not a great
idea IMO if you can avoid it. For example the SE wire (for a 200A service)
only came in black, I had to tape off the neutral with white electrical tape
to identify it. The inspector and power company guy had no problem with
Jacketed 4 cond #10 cable is similar to cable intended for 30A dyer
installations. If there are markings embossed on the jacket, it will reviel
if it is allowed, markings might be on the jacket or the conductors
themselves. Is one conductor a smaller ground. What was the original use
for this cable. Such a cable with solid conductors would be very hard to
flex. My dryer is connected using simialr wires but unjacketed in a
conduit. A 30A receptacle or hardwired using wire nuts may be allowed.
Removed from the jacket, this would be great for automotive amplifier
Not correct. The equipment grounding conductor, if insulated at all, is
required to have a *continuous* covering of green or green with a yellow
stripe. There are a couple of exceptions, but they don't apply in a
residential application. [NEC 2005 Art. 250.119]
Similarly, the grounded (neutral) conductor is required to have a *continuous*
covering of white, gray, or three white stripes on some color other than
green, unless it's larger than 6 AWG. [Art. 200.6]
As always, the local inspector has the final say. The Code specifically
provides that local inspection/enforcement authority may waive any portion of
Doug Miller (alphageek at milmac dot com)
Ever heard of military intelligence, the oxymoron?
You fail to mention the insulation rating in volts. Just because the wire
can be used in 200C means squat for anything.
I have used asbestos covered wire feeding heating elements. The ONLY place
this wire could be used was in a smelter.
Having all of the conductors the same color prohibits the use for anything
other than low voltage. You have some nice speaker wire there. White and
green must be identified the length of the wire, and marking tape below #4
is a not acceptable.
Sure hope you got a "deal" on it.
I just checked, it is rated for 600 volts RMS.
CXFK VOLTAGE RATING 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING
VOLTAGE ALL CONDUCTORS
It was an OK deal. Not fantastic, but somewhat profitable. This reel
is one of the few things remaining from the lot. I think that it would
be easier to sell this wire and then buy the right color and gauge
wire as needed.
This wire makes pretty good "machine tool wire", I think.
There's not much use for that wire in a house, although you may be able
to use it to re-wire damaged "high" temperature appliances like ranges,
water heaters, heating elements, HID light fixtures, etc. Those
appliances usually use 105C or 150C wire at the most, so 200C would be
OK. If you sell it, I'd keep at least 10 feet of it.
Rated for safety in _that_ environment. Not necessarily another.
There's more to safety than voltage or temperature rating.
Eg: flexibility, brittleness, cold-fracturing, what happens if it burns etc.
Wiring has to pass specific tests appropriate to the intended environment
before it's approved for that environment.
While there's a good chance that the wiring is perfectly suitable
for house wiring (except for color coding), as it hasn't been been
tested and approved for house wiring, it's inadvisable to use it from
the perspective of code compliance, inspections etc.
Chances are that it exceeds house wiring in all respects, but is
overkill, too expensive for house wiring, and the manufacturers of
it didn't bother to get it approved, because nobody in their right
minds would consider paying the premium for it to buy the stuff at
the price they'd have to charge for it.
But, if it's not been approved, it's still a bad idea to use it.
[I've already see you make the right choice - keep a bit, and sell
the rest. The above is just an clarification.]
Chris Lewis, Una confibula non set est
It\'s not just anyone who gets a Starship Cruiser class named after them.
That was the voice of common sense. That's what I will do, keep 25 ft
(four conductors make it 100 ft on a single conductor basis), and sell
the rest. It is up on ebay auction now, no bids yet, so I will simply
revise the auction.
Not legal, and not smart either -- if all conductors are the same color, how
do you propose telling the difference between hot, neutral, and ground?
Sell the spool on eBay or in your local newspaper, and use the money to buy
the right wire for the job.
Doug Miller (alphageek at milmac dot com)
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