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UL 1563 Standard for Electric Spas, Equipment Assemblies, and Associated Equipment Revised

hot tub photo

UL has announced the release of a new edition of UL 1563. UL 1563 applies to “electric spas, equipment assemblies, and associated equipment.” The updated edition can be purchased on UL’s website.

Description*

- Partner Content -

Antenna Factor and Gain Calculations

Antenna Factor and Gain metrics provide crucial insights into antenna performance, allowing engineers to calculate signal strength relationships and directional effectiveness. These measurements help optimize RF systems by comparing actual antenna behavior to theoretical isotropic radiators using standardized 50-ohm configurations.

“These requirements apply to self-contained spas. They also apply to field-installed equipment assemblies, blowers, and controls for use with field-installed hot tubs, swimming pools, and non-self-contained spas. These products are for household or commercial use, indoors, outdoors, or both. All equipment is intended for installation and use in accordance with Article 680 of the National Electrical Code, NFPA 70.”

*Description from the UL website.

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