electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Under the NEC, can I use 5kv L-824 ALC at 2400 volts? Note I am referring to using in general applications, not specifically in series circuits with regulators as permitted by 310.10(F), Exception No. 2. or 310.10(E) exception No. 2. My first thought was "NO" because it is "not an NEC wire type", however 310.10 states:
So we go to 310.104 which states:
And L-824 seems to fall under 310.104(D) without being specifically mentioned, so I think we are good there.
Ok now back to 310.10, it appears our only avenue to use L-824 generally since it is non shielded is per 310.10(E) exception #1 which states:
L-824 appears to be ETL listed. I am not sure about (a), I couldnt find any spec sheets specifically stating this. Regarding (b), I am not sure about that either. Is "jacket" synonmous with "insulation" here? (c) is ok.
310.10 Uses Permitted. The conductors described in
310.104 shall be permitted for use in any of the wiring
methods covered in Chapter 3 and as specified in their
respective tables or as permitted elsewhere in this Code.
So we go to 310.104 which states:
310.104 Conductor Constructions and Applications. Insulated
conductors shall comply with the applicable provisions
of Table 310.104(A) through Table 310.104(E).
And L-824 seems to fall under 310.104(D) without being specifically mentioned, so I think we are good there.
Table 310.104(D) Thickness of Insulation and Jacket for Nonshielded Solid Dielectric Insulated Conductors Rated 2001 to 5000
Volts
Ok now back to 310.10, it appears our only avenue to use L-824 generally since it is non shielded is per 310.10(E) exception #1 which states:
Exception No. 1: Nonshielded insulated conductors listed
by a qualified testing laboratory shall be permitted for use
up to 2400 volts under the following conditions:
(a) Conductors shall have insulation resistant to electric
discharge and surface tracking, or the insulated conductor(s) shall be covered with a material resistant to
ozone, electric discharge, and surface tracking.
(b) Where used in wet locations, the insulated conductor(s) shall have an overall nonmetallic jacket or a continuous
metallic sheath.
(c) Insulation and jacket thicknesses shall be in accordance
with Table 310.104(D)
L-824 appears to be ETL listed. I am not sure about (a), I couldnt find any spec sheets specifically stating this. Regarding (b), I am not sure about that either. Is "jacket" synonmous with "insulation" here? (c) is ok.