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IMPORTANT NOTE: (FIGURE 1)
The following dimensions can be used to determine the proper location of submerged conduits in concrete slab
installations. The dimensions are made from the outside of the spa / hot tub frame with the access for panels
removed. The topside control panel is shown at the bottom of the diagram as a reference.
WIRE SIZE
NORTH AMERICA
The minimum wire size for systems that require a 40A GFCI is #8/3 c/w ground (also referred to as #8
gauge / 4 conductor).
The minimum wire size for systems that require a 50A GFCI is #8/3 c/w ground (also referred to as #8
gauge / 4 conductor).
EUROPE
Standards for amperage breakers may vary from country to country in the CE controlled area. Please consult
your local installer for advice on breaker level and wire specifications. Some examples are below:
Breaker of 13A – wire must be 1.5mm2
Breaker of 16A – wire must be 2.5mm2
Breaker of 20A – wire must be 4.0mm2
Breaker of 32A – wire must be 6.0mm2
NOTE: Please consult your applicable codes related to the size of conductors as they may vary from
what is stated above. Take consideration the length of cable as well and increase as required.
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