South Gym Electrical Plan

Overview

A new electrical panel will be installed in the South Gym to serve the AV rack, lighting dimmers, LED wall (long-term), and other room loads. This document tracks the panel’s load requirements to determine the service size needed.

Wiring Diagram

Power distribution overview

                                    Main Building Service
                                    (capacity TBD)
                                            │
                                            │  Feeder: wire size TBD
                                            │  Conduit: type & run TBD
                                            │  Distance: TBD (voltage drop calc needed)
                                            │
                    ┌───────────────────────┴───────────────────────┐
                    │              NEW SOUTH GYM PANEL               │
                    │              100A–200A, 42-space               │
                    │              (bus rating & main bkr TBD)       │
                    │              Location: TBD                     │
                    └──┬──────┬──────┬──────┬──────┬──────┬──────┬──┘
                       │      │      │      │      │      │      │      │
     ┌─────────────────┘      │      │      │      │      │      └─────────────────────┐
     │           ┌────────────┘      │      │      │      └──────────┐                 │
     │           │           ┌───────┘      │      └──────┐          │                 │
     │           │           │         ┌────┘             │          │                 │
     │           │           │         │                  │          │                 │
     ▼           ▼           ▼         ▼                  ▼          ▼                 ▼
    UPS        Amp #1      Amp #2    Amp #3         SmartPack #1  SmartPack #2    Room circuits
   (TBD)       20A/        20A/      20A/           60A/240V      60A/240V       (LED wall,
               120V        120V      120V                                         ventilation,
                                                                                  convenience)

Rack closet power distribution

Four panel circuits feed the rack closet (1x UPS, 3x amp). SmartPack feeds are also in the closet but serve the lighting system.

PANEL                                              RACK CLOSET
─────                                              ───────────

UPS circuit ────► [L5-20R] ────► Online UPS (double-conversion)
(20A / 120V)                                         │
                                       ┌───────────┼───────────┐
                                       │           │           │
                                  Always-on   Always-on   RLNK-915R (PDU)
                                  (infra)     (infra)     (see RLNK detail below)
                                       │           │
                                  M4250 PoE+  IT switch
                                  (also feeds
                                   PoE devices
                                   below)


Amp #1 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #1 (ceiling speakers)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)


Amp #2 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #2 (subwoofers, TBD if keeping)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)


Amp #3 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #3 (floor monitors, TBD if keeping)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)

Amps are on dedicated circuits, not through the RLNK or UPS, due to high peak draw.

RLNK-915R outlet allocation

The RLNK is downstream of the UPS. AMX controls outlets 2-9 for power sequencing. Outlet 1 is always-on (not switchable) — it powers whenever the UPS is on.

Online UPS ────► RLNK-915R
                        │
                        ├──── Outlet 1:  AMX SVSi frame (always-on, not switchable)
                        │
                        ├──── Outlet 2:  MIPRO ACT-727a #1 + #2 (dual-head IEC cable)
                        │
                        ├──── Outlet 3:  NovaStar VX4S #1 + #2 (dual-head IEC cable, long-term)
                        │
                        ├──── Outlet 4:  (spare)
                        │
                        ├──── Outlet 5:  BSS BLU-100 #1 + #2 (dual-head IEC cable)
                        │
                        ├──── Outlet 6:  Midas DL16 (rack)
                        │
                        ├──── Outlet 7:  Rack PC (Mac mini)
                        │
                        ├──── Outlet 8:  Barco ClickShare
                        │
                        └──── Outlet 9:  Arylic LP10

SmartPack power and output distribution

Both SmartPacks are wall-mounted in the rack closet. Each is hardwired directly off the panel (not plug-and-cord) with a 60A / 240V single-phase feed using 6/4 SO or SJO cable and a 2-pole breaker. Two SmartPacks = 120A of panel capacity for dimmers. Three-phase (120/208V at 40A per unit) is an option but not required. See the ETC SmartPack FAQ for detailed input specifications. The ampacity rating of the SmartPack input terminals and maximum wire size they accept should be verified by the electrician from the unit during installation.

The SmartPack’s single feeder cable (6/4 SO or SJO) carries two hots, one shared neutral, and ground. In a single-phase 240V (split-phase) system, harmonics do not add on the neutral the way they do in three-phase systems — in split-phase, odd harmonics (including the 3rd) remain anti-phase between legs and cancel on the neutral, just like the fundamental. However, the neutral still carries current from any load imbalance between the two legs (channels are not always dimmed equally), and forward-phase dimmer waveforms have high crest factors that stress neutral conductors. ETC’s recommended 6/4 cable has a full-size neutral (same gauge as the hots), which handles the worst-case imbalance scenario (all load on one leg). The electrician should verify neutral adequacy during installation.

PANEL                                        RACK CLOSET (wall-mounted)
─────                                        ──────────────────────────

SmartPack #1 feed ────►  ┌───────────────────────────────────────────────────┐
(60A / 240V, 2-pole)     │   ETC SmartPack #1                               │
                         │   12ch x 1200W  (14,400W capacity)               │
                         │                                                   │
                         │   DMX In ◄── ETC Paradigm ACP DMX port (Ch 1–12) │
                         │                                                   │
                         │   Outputs (individual home runs to fixtures):     │
                         │       Ch 1  ──────► Fixture zone                 │
                         │       Ch 2  ──────► Fixture zone                 │
                         │       Ch 3  ──────► Fixture zone                 │
                         │       ...                                        │
                         │       Ch 12 ──────► Fixture zone                 │
                         └───────────────────────────────────────────────────┘


SmartPack #2 feed ────►  ┌───────────────────────────────────────────────────┐
(60A / 240V, 2-pole)     │   ETC SmartPack #2                               │
                         │   12ch x 1200W  (14,400W capacity)               │
                         │                                                   │
                         │   DMX In ◄── ETC Paradigm ACP DMX port (Ch 13–24)│
                         │                                                   │
                         │   Outputs (individual home runs to fixtures):     │
                         │       Ch 13 ──────► Fixture zone                 │
                         │       Ch 14 ──────► Fixture zone                 │
                         │       Ch 15 ──────► Fixture zone                 │
                         │       ...                                        │
                         │       Ch 24 ──────► Fixture zone                 │
                         └───────────────────────────────────────────────────┘

Note: Existing daisy-chain wiring from the old switching box is NOT reusable --
      the old switching box and the new rack closet are on opposite sides of the
      facility. New conduit runs and individual home runs are required from each
      SmartPack channel to its fixture group. Each output channel has a 10A/120V
      internal breaker; the electrician determines wire size based on run lengths
      to fixture locations and the number of conductors sharing conduit (standard
      installation calculations). Panel-level demand calculation per CEC Rule
      8-204 (schools) or Rule 8-210 (other occupancies) — whichever is more
      conservative — is part of the electrician's permit process. (Note: CEC
      Rule 8-200 applies to dwelling units and does not apply here.)

DMX control path

AMX (facility)                                    RACK CLOSET
──────────────                                    ───────────

AMX processor ────RS-232────► ETC Paradigm ACP ────DMX512────┬────► SmartPack #1 (Ch 1–12)
(remote, via                  (PSAP, presets                │
 network)                      stored locally)              └────► SmartPack #2 (Ch 13–24)

DMX cable must be routed in its own dedicated conduit, separate from SmartPack power feeds. Standard DMX cable (120Ω characteristic impedance per ANSI E1.11).

Room circuits (outside rack closet)

PANEL                                    ROOM LOCATIONS
─────                                    ──────────────

LED wall circuit ────────────────────►   [conduit stub-out at mounting wall]
(TBD, long-term)                         Conductors TBD -- pull now or leave empty.
                                         Power at display, not in rack.
                                         VX4S processors are in the rack (separate power).


Ventilation fan ─────────────────────►   [fan location in/near rack closet]
(TBD, if needed)                         May share a circuit.


Convenience outlets ─────────────────►   [room outlets at event-accessible locations]
(15A / 120V)                             Qty and locations TBD.

Conduit for LED wall power and data will be run during initial renovation to avoid retrofitting later, even though the wall itself is a long-term addition.

PoE-powered devices (no panel circuit – powered from M4250 switch)

M4250 PoE+ switch                                ROOM LOCATIONS
(always-on, UPS)                               ──────────────
        │
        │
        ├──── PoE (802.3at) ────── Cat 6A ──────► NMX-DEC-N1222A decoder
        │                                         (ceiling, at projector)
        │                                         ~25W, Class 4
        │
        ├──── PoE (802.3af) ────── Cat 6A ──────► NMX-ENC-N1115-WP encoder
        │                                         (back wall)
        │                                         ~8W, Class 3
        │
        ├──── PoE (802.3af) ────── Cat 6A ──────► AMX EXB-COM2
        │                                         (in rack)
        │                                         ~5W, Class 2
        │
        └──── PoE (TBD) ────────── Cat 6A ──────► AMX touch panel(s)
                                                  (wall-mounted)
                                                  TBD

These devices draw power from the network switch via PoE and do not require dedicated electrical circuits.

Other small devices not in the PoE or RLNK diagrams above (power source/location TBD, but should be accounted for in the overall load):

• Raspberry Pi (Bitfocus Companion fallback controller) — ~15W, USB-C powered; in rack, needs a power source (likely RLNK or UPS always-on)
• ETC Paradigm ACP — power depends on enclosure choice (ERn has AC input; DIN rail P-ACP-D uses external 24V PSU). See lighting plan.
• ETC Response 0-10V Gateway — 18-24 VDC via ETC PS-DIN24 PSU (~10W). Location TBD (rack closet or near fixtures). See lighting plan.

Panel Load Summary

All loads fed from the new panel. This table will be updated as equipment is selected and loads are confirmed.

AV rack detail

Four circuits feed the rack closet (1x UPS, 3x amp). See Rack Plan – Electrical for the full circuit-by-circuit breakdown, outlet allocation, and amp breaker sizing notes.

The UPS is an online double-conversion unit (AC-DC-AC topology: rectifier → DC bus → inverter), producing a clean sine wave – better for AV equipment than line-interactive or standby designs. It takes 120V input via a NEMA L5-20 receptacle (single-pole breaker, standard conductor sizing). Three amp circuits across two panel legs – the electrician distributes them to balance the load (two on one leg, one on the other). Amp receptacles are co-located with the UPS outlet (ceiling or low wall, depending on whether the rack closet ceiling is kept or removed). The distance from the panel to the rack closet receptacles is almost certainly within 20’, making voltage drop negligible.

The IT switch does not require an isolated ground or dedicated neutral – it is powered from a rack PDU on the always-on infrastructure circuit (same as the M4250). Additional RLNKs, if added, do not require additional panel circuits because they are downstream of the UPS.

Lighting dimmers detail

Both SmartPacks are wall-mounted in the rack closet. Each ETC SmartPack 12x1200W has a total dimming capacity of 14,400W (12 channels x 1200W). Two SmartPacks = 28,800W total capacity. However:

• With LED fixtures, actual draw per channel will be well under 1200W (likely 100-300W depending on fixtures). The SmartPacks’ full capacity will not be used.
• Panel wiring must support each SmartPack’s 60A / 240V single-phase hardwired feed (2-pole breaker per unit, 120A total for both).
• Actual fixture load will determine the true demand on the panel. The dimmer capacity is the ceiling, not the expected operating load.

See Lighting Plan for dimmer, fixture, and zoning details.

Kitchen SmartPack decommissioning

The existing kitchen SmartPack is being relocated to the South Gym. The electrician handles the disconnect as part of the relocation scope and permit – no separate permit or inspection is required for the removal itself. Orphaned kitchen circuits get capped off in junction boxes or pulled at the electrician’s discretion. A pre-relocation condition assessment is not needed: SmartPacks are built for heavy theatrical use, and a kitchen lighting circuit is light duty. If a channel has issues, it will show up during commissioning, and individual triacs are replaceable.

LED wall detail

Long-term, one or two LED walls will replace the projector (see Video Plan). LED wall power draw depends on panel area, pixel pitch, and brightness. Typical indoor LED panels draw ~200-500 W/m² at full brightness. The NovaStar VX4S processors are in the AV rack and already counted in the rack power budget. The LED panels themselves will need power at their mounting location, fed from this panel. A junction box is needed at each mounting location to transition from building wiring to Neutrik powerCON connectors (the standard power interface for LED panels). If two panels are installed at separate locations (Option B), two separate conduit runs are required – the panels would be at least 20’ apart.

Conduit for LED wall power and data will be run during the initial renovation to avoid retrofitting later, even though the wall itself is a long-term addition.

Panel Sizing

The panel size (bus rating and number of breaker spaces) depends on total connected load. Key unknowns that affect sizing:

• SmartPack input configuration (resolved: 60A / 240V single-phase per unit, 2-pole breaker)
• UPS input requirements (model TBD)
• LED wall size and power (long-term)
• Actual lighting fixture selection (determines real dimmer load vs. 1200W/channel capacity)

Working estimate

For planning purposes, this estimates the likely operating load (not the theoretical maximum of every dimmer channel at full capacity):

The low end uses idle amps (270W) with minimum estimates; the high end uses moderate-use amps (1,875W) with maximum estimates. Per-leg current on a 120/240V split-phase panel cannot be calculated by dividing total watts by 120V — the 240V loads (SmartPacks, LED wall) draw equally from both legs and should be divided by 240V, while 120V loads contribute to a single leg. A rough breakdown:

• Low end (~5,300W): 120V loads ~1,270W (10.6A per leg if balanced) + 240V loads ~3,000W (12.5A per leg) ≈ ~23A per leg
• High end (~15,600W): 120V loads ~3,375W (28.1A per leg if balanced) + 240V loads ~12,200W (50.8A per leg) ≈ ~79A per leg

A 100A to 200A panel is a reasonable planning range, with the final size dependent on resolving the TBDs above. A 42-space panel would accommodate all foreseeable circuits with room for growth. Approximately 10-12 spaces are used (1x UPS, 3x amp, 2x two-pole SmartPack, 1-2x LED wall, 1-2x convenience), leaving ~70% spare – well beyond any 20-25% requirement.

Grounding & Bonding

The new panel uses the building’s existing grounding electrode system via the equipment grounding conductor in the feeder from the main panel. No separate grounding electrode is needed.

UPS power conductor isolation

The online double-conversion UPS regenerates the AC power waveform (rectifier → DC bus → inverter), stripping conducted noise from the hot and neutral conductors before they reach downstream equipment. However, the equipment grounding conductor (EGC) is continuous through the UPS — the UPS chassis is bonded to the building ground per code, and every downstream device’s chassis is bonded back to the building ground through that path. The UPS does not create a true galvanic break on the ground conductor.

Whether the UPS provides a new neutral-ground reference (i.e., creates a “separately derived system” per CEC Rule 10-104) depends on the specific UPS model — many small rack-mount UPS units pass the neutral through without re-deriving it. This must be verified when the UPS model is selected. If the UPS does not create a separately derived system, the power isolation benefits described below are reduced.

• Isolated ground (IG) wiring is not required. The UPS circuit is on its own dedicated branch circuit with no shared ground conductor in conduit with SmartPack circuits. The combination of power waveform regeneration and dedicated circuit routing provides adequate noise isolation without IG bus bars or IG-type receptacles.
• Rack grounding bus bar — a bus bar must be installed in the ERK-4025 rack and all rack equipment chassis bonded to it, providing a single-point ground reference that minimizes ground potential differences between devices. The ERK-4025 includes a 1/4-20 grounding stud and three 10-32 bonding studs. The bus bar bonds to the equipment grounding conductors (EGCs) of the branch circuits feeding the rack — since all branch circuits originate at the same panel, this creates a local star-ground point without requiring a separate home run. The electrician or P.Eng determines the bonding conductor size and termination point (typically #6 or #4 AWG to the incoming branch circuit EGC, or to a nearby building grounding electrode conductor if available). This is a safety and noise-control requirement independent of UPS topology.

Dimmer-to-AV noise isolation

SmartPack dimmer circuits and the UPS are on separate branch circuits with separate neutral conductors in the branch circuit wiring. However, all branch circuit neutrals terminate on the same neutral bus bar at the panel — SmartPack harmonic currents flow through this shared bus bar and create a small common-impedance voltage drop that couples onto the UPS input neutral.

The primary mitigation is the UPS topology itself: the online double-conversion UPS rectifies the input AC (including any harmonic noise from the shared bus bar) and regenerates a clean AC waveform on the output. This strips conducted noise before it reaches rack equipment. No additional filtering or isolation is required between SmartPack circuits and UPS input circuits.

Note: The amps are on dedicated circuits (not behind the UPS) and share the panel neutral bus bar with the SmartPack circuits. Their only protection from conducted dimmer noise is their internal power supply filtering. In practice, Class D amp switch-mode power supplies have adequate input filtering, but if audible noise is detected on amp circuits during commissioning, the source should be investigated.

Ground boundary crossings

Several signal paths cross between UPS-powered and building-powered equipment. The equipment grounding conductor is continuous (the UPS does not break it), but devices on opposite sides of the UPS power path have different noise environments on their power conductors, and ground potential differences between circuits can cause hum or signal degradation.

DMX cable shield grounding: Grounded at one end only (Paradigm ACP / transmitter end) per ANSI E1.11. The Paradigm ACP’s ground reference depends on its enclosure power source (TBD – ERn or DIN rail PSU) and the SmartPacks are on building ground – grounding the shield at both ends would create a ground loop. DMX is differential (RS-485) with +/-7V common-mode tolerance, so the signal is unaffected as long as the shield is grounded at one end only.

M32R console ground loop: The M32R plugs into a convenience outlet (building ground) while the rack DL16 is on UPS ground. AES50 uses 100BASE-TX Ethernet physical layer with transformer-isolated magnetics at both ends (1500V isolation per IEEE 802.3), providing galvanic isolation of the data path regardless of ground potential differences. The cable shield (if STP cable is used) may carry ground loop current but cannot affect data integrity through the transformer isolation. If the AES50 cable runs alongside analog audio cables, maintain separation to avoid shield-current-induced coupling.

Wireless mic antenna grounding: Not applicable for the initial install — the ACT-727a receivers have detachable antennas on 50-ohm TNC connectors, but in the default configuration the antennas are physically attached to the receiver chassis (UPS ground via RLNK, no boundary crossing). If remote-mounted antennas are added later, the coax shield would bridge UPS ground to the antenna mounting point’s ground reference, and CEC/NEC 810 antenna grounding requirements would apply. Revisit if remote antennas are needed.

Safety & Code Compliance

Emergency and exit lighting is on a completely separate system, unrelated to this panel or the SmartPacks. No SmartPack fault or AMX preset can disable it. (Whether the existing emergency/exit lighting meets current Alberta Building Code requirements is an open question in the lighting plan.) The ETC Response 0-10V Gateway is UL 924 listed and has a contact closure input for emergency-level activation — if wired to the building’s emergency system, it can override all dimming and drive gymnasium fixtures to full output in an emergency. Whether the facility’s emergency system provides this signal, and whether it should be connected, is TBD.

AFCI protection is not required. AFCI is a residential requirement under the Canadian Electrical Code and does not apply to commercial/institutional buildings. It would also be impractical here – Class D amplifier inrush current and SmartPack dimmer waveforms would cause nuisance trips.

Arc flash labeling is required on the new panel. Simplified labeling is sufficient for a sub-panel of this size – the electrician applies a standard arc flash warning label. A full arc flash hazard analysis is not needed.

Emergency disconnect is not required for the AV/lighting system. Emergency disconnects are for commercial kitchen equipment, HVAC, and industrial machinery. The panel breakers serve as the disconnect for this equipment. No separate panic switch accessible outside the locked rack closet is needed.

Conduit & Future-Proofing

Rack closet interior runs use EMT (metal conduit) affixed to the wall. Fiber runs are armored and wall-affixed (see Networking Plan).

All wire runs should be in conduit wherever possible, including low-voltage runs such as speaker wiring. The gymnasium ceiling will remain open (exposed structure) after construction, so conduit is visible and should be routed cleanly. Conduit should be stubbed from the rack closet to speaker rough-in locations while walls and ceilings are open during construction.

A dedicated conduit stub-out to a scorer’s table location at floor level is not needed – a scoreboard cart would be self-contained with its own power and data, using a convenience outlet and network drop.

Motorized blackout shades are not needed for the gymnasium – there are no windows.

Ventilation fan conduit and breaker space are out of scope for this plan – ventilation is part of HVAC.

Permits & Inspection

An Alberta-licensed electrical contractor handles the permit and coordinates with the Safety Codes Officer as part of standard practice. The electrician pulls the permit.

The relocated kitchen SmartPack requires a fresh inspection as a new installation – it is being relocated to a new panel with all new wiring downstream, so the entire installation will be inspected as new work.

Stamped electrical drawings from a Professional Engineer registered in Alberta are unlikely to be required. In Alberta, a licensed electrical contractor can design and install a sub-panel and branch circuits without P.Eng involvement – stamped drawings are typically only required for larger commercial projects. The exact threshold at which APEGA requires P.Eng involvement is not prescriptive for all cases — a 200A service may or may not trigger it depending on the Safety Codes Officer’s interpretation. If the Safety Codes Officer flags it during the permit process, the electrician would engage a P.Eng at that point.

Open Questions

Panel & Service Entry

• Panel location in the room
• Is this a main breaker panel or a sub-panel with main lug only? What is the upstream feeder breaker size at the main distribution panel?
• Feed from main building service to this panel (wire size, conduit run, distance). Has a voltage drop calculation been performed for the feeder at full panel load?
• What is the main building service capacity, and does it have headroom for this new panel? The working estimate needs to be added to the building’s connected load calculation.
• What is the available fault current (AFC) at the main building panel, and does the new panel’s short-circuit current rating (SCCR) meet it?
• What size main breaker and bus rating? A 100A main in a 200A bus panel is different from a 200A main – the choice affects upstream feeder sizing.
• Is the upstream feeder breaker large enough to carry the full load including the future LED wall without being replaced?
• Does the panel location comply with CEC Rule 2-308 minimum working clearances (1.0m / 39.4“ depth for ≤150V-to-ground, or 1.2m / 47.2“ for 151-600V; 750mm / 30“ width; 2.0m / 6’7“ headroom)? Given SmartPacks are also wall-mounted in the same closet, do all three pieces of equipment simultaneously meet clearance requirements? (Closet dimensions are 86“ wide × 165“ deep × 105“ high — headroom clears 2.0m requirement; layout needs to confirm depth and width clearance zones in front of each piece.)

UPS & Rack Circuits

• What is the total VA load the UPS must carry? Most rack device wattages are still TBD – UPS cannot be specified until these are known.
• Where are the rack closet receptacles located? TBD – depends on whether the rack closet ceiling is kept or removed. If ceiling remains, L5-20 on the ceiling. If removed (open to gym structure above), L5-20 on the wall behind the rack.

LED Wall (Long-Term)

• LED wall power requirements (panel area, pixel pitch, brightness)
• What conduit size and quantity is needed for LED wall power and data? Routing path from rack closet to each candidate wall location?
• Should conductors be pulled into the LED wall conduit now, or left empty? If pulled now, what size accommodates the 1,000-5,000W range at that distance?
• How will open conduit stub-outs be sealed during the interim period to prevent water intrusion, pests, or combustion gas entry?
• Does the panel bus rating accommodate adding the LED wall load without upgrading the feeder from the main service?

Surge Protection

• Is a Type 2 surge protection device (SPD) warranted at the new panel? The online UPS already protects rack equipment downstream of it, but the amps and SmartPacks are on dedicated circuits without surge protection. Whether a panel-level SPD is needed depends on the building’s exposure to surges (lightning, utility switching, large motors) and whether a Type 1 SPD already exists at the main service entrance. Note: if the jurisdiction has adopted CEC 2024, SPDs may be mandatory at new panels — confirm with the electrician. Need to check with electrician.

Safety & Code Compliance

• Do lighting control scenes comply with minimum illuminance requirements for paths of egress under the Alberta Building Code? Is there a floor level enforced in AMX/DMX so a preset cannot go below code-required minimums?
• GFCI: the rack closet has an exterior wall – if insufficiently insulated, condensation could lead the Safety Codes Officer to classify it as a damp location, requiring GFCI on 15A/20A 125V receptacles. GFCI on a Class D amp circuit will nuisance-trip on inrush. Ask the electrician to confirm the classification during the permit process.
• Do the SmartPacks’ internal magnetic breakers (10A per channel) have adequate interrupting ratings for the available fault current at this panel? The electrician needs to calculate the AFC at the panel location and confirm the SmartPack’s SCCR meets it. Likely not an issue for a sub-panel on a moderate feeder run, but should be verified during the permit process. ETC does not publish the SCCR in their public documentation.

SmartPack Breaker Sizing

• Continuous load classification: Each SmartPack is on a 60A / 240V two-pole breaker. If event lighting is classified as a continuous load under CEC (operating at near-maximum for 3+ hours — e.g., a wedding reception), the 80% continuous derating rule (CEC Rule 8-104) would require the breaker to be derated to 48A continuous, or the breaker upsized to 80A to carry 60A continuously. Is event lighting expected to run at or near full SmartPack capacity for 3+ hours? If so, verify with the electrician whether the 60A breakers are adequate or need to be upsized.

Permits & Inspection

• What inspection stages are required (rough-in before walls close, final after fixtures)? The gymnasium ceiling is open (exposed structure) so ceiling conduit is accessible post-construction. Wall rough-in still needs inspection before closing. Confirm stages with the electrician.

Conduit & Future-Proofing

• What are the conduit paths from the panel/closet to: projector (ceiling), N1115-WP wall plate (back wall), LED wall stub-out, speaker locations, lighting fixture zones?
• How many convenience outlet locations are needed for events? No prescriptive commercial code requirement (unlike residential outlet spacing rules) – this is driven by use cases. Consider caterer/vendor setup areas (along walls, near kitchen), portable production table location, and avoiding extension cords across the gym floor during events.