21
Electrical Spa Wiring Connection Instructions
Wiring Connections
Important:
Never, under any circumstances, should you connect power to the neutral terminal.
1. Identify the TB-1 terminal block, located inside the blue “M-Class” control box on the left side.
2. Connect the 8 AWG, BLACK wire, from the GFCI 50 amp breaker, terminal L1 to TB-1, Line 1.
3. Connect the 8 AWG,WHITE wire, from the GFCI 50 amp breaker, terminal N to TB-1, neutral.
4. Connect the 8 AWG, GROUND wire, from the GFCI 50 amp breaker, terminal GND (ground) to
TB-1, ground.
5. Connect the 8 AWG, RED wire, from the GFCI 50 amp breaker, terminal L2 to TB-1, Line 2.
6. At least two additional lugs marked “Bonding Lugs” are provided on the external surface of one of
the bonded components metal enclosures.To reduce the risk of electrical shock, connect the local
common bonding grid in the area of the hot tub or spa to these terminals with an insulated
or
bare copper conductor not smaller than No. 6 AWG.
7. All field-installed metal components such as rail, ladders, drains or other similar hardware within
10 ft (3m) of the spa or hot tub shall be bonded to the equipment grounding bus with copper
conductors not smaller than No. 6 AWG.
8. Replace the control box cover and securely tighten the fastening screws. Close and secure the
equipment compartment panel.
Note:
Always use copper wire only (3 wire with ground. 8 gauge under 50ft, 6 gauge over 50ft)
The electrical supply for this product must include a suitable rated switch or circuit breaker
to open all ungrounded supply conductors to comply with Section 422.20 of the National
Electrical Code ANSI/NEPA 70-1987.The disconnecting means must be readily accessible to
the tub occupant but installed at least 5 feet (1.5m) from tub water.
Factory
Installed
Neutral
(Pigtail)
Incoming
Ground (Green)
Incoming
Power (Black)
Ground to Spa
Outgoing Power to Spa
Outgoing Neutral to
Incoming Power (Black or Red)
Incoming Neutral (White)
Power to Spa
Neutral to Spa
Factory Installed
Neutral (Pigtail)
Bottom View of Breaker
Note:
The GFCI breaker must be placed in sight of the spa, at a minimum distance of five
feet (1.5m) away.
Note:
As of January 1, 1996 the National Electric Code (NEC) requires GFCI (Ground
Fault Circuit Interrupter) on all spa installations.
