Swimming pool low voltage light

[superduty1]

I was looking at the Mike Holt illustrated NEC 680 pdf.

It reads as follows: "An 8 AWG conductor is not required in the non metallic raceway if a low-voltage lighting system is used."

Is there a particular definition of a "lighting system". Or is it simply a reference to a light under 15v with an approved transformer?

TIA

 

[Dennis Alwon]

Here you go

411.4 Listing Required. Lighting systems operating at
30 volts or less shall comply with 411.4(A) or 411.4(B).
Class 2 power sources and lighting equipment connected to
Class 2 power sources shall be listed.


(A) Listed System. Lighting systems operating at 30 volts
or less shall be listed as a complete system. The luminaires,
power supply, and luminaire fittings (including the exposed
bare conductors) of an exposed bare conductor lighting system
shall be listed for the use as part of the same identified
lighting system.


(B) Assembly of Listed Parts. A lighting system assembled
from the following listed parts shall be permitted:
(1) Low-voltage luminaires
(2) Low-voltage luminaire power supply
(3) Low-voltage luminaire fittings
(4) Cord (secondary circuit) for which the luminaires and
power supply are listed for use
(5) Cable, conductors in conduit, or other fixed wiring
method for the secondary circuit
The luminaires, power supply, and luminaire fittings
(including the exposed bare conductors) of an exposed bare
conductor lighting system shall be listed for use as part of
the same identified lighting system.

 

[Little Bill]

Most all references to low voltage pool lights will say 15V or less.

What the statement in the illustration was talking about is the required #8 insulated EGC is not required in non metallic conduit to low voltage lights. Mainly because there is no EGC ran with the lights and usually no metallic housing for the lights. The #8 just bonds to the inside of a niche or forming shell and is run back to the junction box for the lights. Normally that is for line voltage (120V) lights. If a metal raceway is used that can be used for the bonding. But if a non metallic raceway is used that's where the #8 is required for line voltage lights.

680.23(B)(2)