Renovation & High-Draw · CEC Section 68 (Pools, Tubs & Spas)

Hot Tub / Spa Electrical Calculator

Size circuit breaker rating, emergency GFCI disconnect box distance, and wire gauge for 240V outdoor hot tubs and spas.

1. Hot Tub / Spa Rating

Hot Tub Amperage Rating

Run Length from Main Panel (Feet)

2. Electrical & Safety Requirements

CEC Section 68 Mandatory

REQUIRED GFCI DISCONNECT BREAKER

50A 2-Pole GFCI

MINIMUM COPPER CABLE

#6/3 TECK90 or 6 AWG in Conduit

GFCI DISCONNECT DISTANCE CODE

3m to 7.5m (10' to 25')

ESA Permit & Licensed Electrician Mandatory: Hot tub electrical installations are high-risk wet locations under CEC Section 68. Incorrect GFCI bonding can be lethal.

CEC Section 68 Hot Tub Rules

The outdoor emergency GFCI shutoff switch must be located between 3 metres (10 ft) and 7.5 metres (25 ft) from the tub, visible from the water.
Conductors must include an insulated copper ground wire (NMD90 NM-B non-metallic sheath cable cannot be buried outdoors; use TECK90 armoured cable or NMWU in PVC conduit).
All metallic parts, handrails, and metal structures within 1.5 m (5 ft) of the spa must be bonded to the equipotential grid with minimum 6 AWG copper bonding conductor.