Track Systems · Standards
DALI + Emergency Lighting Track: How 8-Wire Track Works
How 8-wire DALI + emergency lighting track works: three phases, a DALI pair and a separate emergency phase in one profile, when to use it and what to specify.
1-Phase vs 3-Phase Lighting Track: Which One to Choose
Both put power anywhere along a ceiling. The difference is how many independently switched groups one track can carry, and that decides how the space can be used after it opens.
A 1-phase track carries one switched supply: every luminaire on it goes on and off together. A 3-phase track carries three switched supplies, L1, L2 and L3, plus a common neutral, so one track can hold three lighting groups that are controlled separately. Choose 1-phase for short runs where everything is lit at once, such as a display, a window or a residential room. Choose 3-phase when the same ceiling needs different lighting at different times, which is the normal case in shops, galleries and showrooms.
The short answer
| If the space needs… | Choose | Why |
|---|---|---|
| All luminaires on one switch | 1-phase | One live conductor is all it takes. |
| Short runs in a window, display or room | 1-phase | Smaller profile, fewer parts. |
| Day, evening and night lighting from one track | 3-phase | Each phase is one switched group. |
| Relighting displays without new wiring | 3-phase | Each luminaire is set to a phase at its adapter. |
| Dimming or scenes per luminaire | 3-phase DALI | Adds a DALI pair to the three phases. |
What is inside each track
Both are extruded aluminium profiles with copper conductors held in insulating carriers. The number of conductors is the difference.
| Track | Conductors | Earth | Profile (G-Tracks) |
|---|---|---|---|
| 1-phase, 2-wire | L, N | Through the aluminium profile | 34 × 19.3 mm |
| 1-phase, 3-wire | L, N, PE | Separate PE conductor | 34 × 19.3 mm |
| 3-phase, 4-wire | L1, L2, L3, N | Through the aluminium profile | 35.2 × 35.5 mm |
The 3-phase profile is taller because it holds four conductors in two walls. On a ceiling the difference is small; inside a recessed detail or a shallow bulkhead it can decide which track fits.
How switching works
On a 1-phase track, the wall switch or contactor controls the whole track. Every luminaire is on the same phase.
On a 3-phase track, each luminaire is connected to one of the three phases at its adapter, usually by turning a selector before the adapter is locked in. Three switches or contactors then control three groups along the same run. A shop might use:
- Phase 1 for general lighting during opening hours.
- Phase 2 for window and feature lighting that stays on in the evening.
- Phase 3 for a reduced night or cleaning setting.
When the displays move, the staff move the spots and choose the phase at each one. Nothing in the ceiling is rewired.
One phase or three phases
The three phases do not have to come from three phases. They can be fed from a single phase through three separate switches, which is how most small shops use them. Where the supply has three phases, each phase can take a different phase so the load is shared. The track is rated 230 V per phase and 400 V between phases, so both arrangements are covered, up to 16 A per phase under IEC/EN 60570.
What drives the cost
- The track itself. 1-phase profiles are smaller and carry fewer conductors, so they cost less per metre.
- The parts. Feeds, couplers and corners follow the same pattern: the 3-phase versions carry more contacts.
- Changes after opening. If a 1-phase space later needs a second lighting group, the usual answer is a second track or new wiring. A 3-phase track already has the spare phases.
For short, simple runs, 1-phase is the economical choice. For a retail floor that will be relit many times, 3-phase usually costs less over the life of the store.
Can the two be mixed?
They can be in the same building, but not on the same run: the profiles and connectors are different. A common pattern is 3-phase track on the sales floor and 1-phase track in windows, fitting rooms or back-of-house displays. Keep each run to one system, and specify the joints and feeds for each.
The G-Tracks range
G-Tracks makes 1-phase 2-wire, 1-phase 3-wire and 3-phase track, plus 3-phase DALI and DALI + emergency versions, all to IEC/EN 60570. Every system is cut, capped and wired at the factory to any length from 0.1 m to 6 m, from stock or under your brand, with no minimum order. For the step from 3-phase to DALI, see 3-phase vs DALI track.
Frequently asked questions
What is the difference between 1-phase and 3-phase track?
A 1-phase track carries one live conductor and a neutral, so every luminaire on it switches together. A 3-phase track carries three live conductors, L1, L2 and L3, and a common neutral, so luminaires can be split into three groups that are switched separately on the same track.
Can 3-phase track be fed from a single phase?
Yes. The three phases can be fed from one phase through three switches or contactors, or from three phases. Feeding from one phase is common in shops, where the three phases are used as three lighting groups rather than to share load across phases.
Is 1-phase track cheaper?
The profile is smaller and has fewer conductors, so the track and its parts usually cost less. The saving matters on short runs. On larger projects the cost of rewiring or adding a second track later often outweighs it.
Which earth arrangement do 1-phase tracks use?
G-Tracks makes 1-phase track in two versions: 2-wire, with L and N and the earth through the aluminium profile, and 3-wire, with L, N and a separate PE conductor for installations that require one.
