On Mon, 23 Jul 2012 15:29:39 -0500, email@example.com wrote:
Does it say Type NM-b? ("b" being the important distinction)
NM-b was released in 1984 and quickly replaced the old NM from most
It was hard to find any NM that wasn't NM-b in the mid 80s.
On Wednesday, April 9, 2014 7:09:31 PM UTC-4, firstname.lastname@example.org wrote:
st I could use a 12-2 with a ground. Is that still up to code using 220 po
wer and if it is what breaker should I use?
Depends on the amperage of the baseboard heater and the distance from the b
reaker panel. In all probability a four foot baseboard section will work o
k on 12/2 with a ganged 20 amp breaker. But you should still check the hea
ter's power requirements on the box.
On Wed, 9 Apr 2014 16:09:31 -0700 (PDT), email@example.com
If the heater is OK on a 20a circuit (1920w or less) 12-2 is fine.
Reidentify the white wire to black (or some other color besides
The white vs yellow vs orange jacket thing is more a marketing gimmick
than a code requirement but it does make it easier for inspectors to
figure out what wire size it is without looking at the jacket
on a heater 240.4(D) rules, 20a breaker on a 12 ga wire.
12 guage - 20 amp
14 guage - 15 amp
But 220 watts? I think you'll find there are two hot
connectors, to be used with 12-3.
|I am looking to put a four foot baseboard heater in a bedroom . In the past
I could use a 12-2 with a ground. Is that still up to code using 220 power
and if it is what breaker should I use?
| If this is just a line to line load (220v AKA 240v) why would you need
| to bring a neutral to it? (12-3)
I don't think I've ever hooked up baseboard
heat. I'm just assuming US, 220 volts is going
to need two hot wires and one white. Maybe
If there is no 120v load, you do not need the white wire. You can
reidentify it some other color (tape, paint etc) and use it as a hot.
200.7(C)(1) If part of a cable assembly and where the insulation
is permanently reidentified to indicate its use as an ungrounded
conductor, by painting or other effective means at its termination,
and at each location where the conductor is visible and accessible.
Identification shall encircle the insulation and shall be a color
other than white, gray, or green.
On Saturday, July 21, 2012 12:49:23 PM UTC-6, firstname.lastname@example.org wrote:
Type NM-B cable first began to be manufactured with color-coded jackets in
2001 to aid in identification of the conductor size. The color code that wa
s introduced, which continues to be used today is as follows:
14 AWG - White
12 AWG - Yellow
10 AWG - Orange
8 AWG - Black
6 AWG - Black
This color coding system was developed to aid those who sell, install, and
inspect Type NM-B cable so that the cable size can easily be identified, to
reduce mistakes resulting from the use of an incorrect conductor size.
It should be noted that this color coding system is not a requirement of NF
PA 70, National Electrical Code(R) (NEC(R)) or UL 719, Safety Standard for
Nonmetallic-Sheathed Cable. Type NM-B can be produced and sold without usin
g this color code. As such, the print legend, which is required by the NEC(
R), should be used to verify the conductor size.
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