The Westinghouse WMTS30A10C is a 30-amp, 8-circuit manual transfer switch designed to safely connect a portable generator to a building's electrical system, isolating generator power from utility power and preventing backfeeding. It is intended for indoor installation, no farther than 16 inches from the load center, and requires installation and maintenance by a qualified electrician in accordance with applicable electrical codes. Some jurisdictions may require local inspection.
Function Description:
The transfer switch allows users to safely utilize generator power through existing electrical wiring. It features three-position circuit selectors for each branch circuit, enabling users to choose between "GEN" (generator power), "LINE" (utility power), or "OFF" (disconnect from all power sources). This ensures that generator and utility power cannot be used simultaneously, enhancing safety. The device includes 15A and 20A circuit breakers that provide protection to the branch circuits when the circuit selector is in the "GEN" position. When in the "LINE" position, branch circuits are protected by the load center's circuit breakers. The transfer switch is compatible with 240VAC generator output voltage but not 120VAC.
Important Technical Specifications:
- Model: WMTS30A10C
- Amperage: 30-amp
- Circuits: 8 circuits (6 x 15A single pole, 2 x 20A single pole)
- Enclosure Material: Steel
- Conduit Size: 1-1/4 in. flexible
- Power Inlet Box NEMA Rating: L14-30P
- Power Inlet Box Material: ABS, UV Resistance for Outdoor, Flame Retardant (UL or CSA/CETL Certified)
- Prewired: Yes
- Circuit Breakers: 15A (single pole) and 20A (single pole)
- Voltage Compatibility: 240VAC generator output (not 120VAC)
Usage Features:
- Circuit Selectors: Three-position switches ("GEN," "LINE," "OFF") for each of the 8 circuits, allowing flexible power source management.
- Wattage Meters: Two meters display the total load on either side of the switch for generator-powered branch circuits (A-E on the left, F-J on the right). These meters help monitor start-up surges and prevent generator overload.
- Circuit Breakers: Integrated 15A and 20A circuit breakers protect generator-powered circuits.
- Power Inlet Box: An outdoor-mounted power inlet box provides a safe and convenient connection point for the generator's power cord. It should be located at least 20 ft (6 m) from occupied spaces with exhaust pointed away.
- Load Balancing: For optimal performance, loads on the left side (circuits A-E) and right side (circuits F-J) of the transfer switch should be balanced within 1000W.
- Easy Circuit Identification: A circuit description chart on the transfer switch allows users to quickly identify connected circuits.
Maintenance Features:
- Troubleshooting Guide: The manual includes a comprehensive troubleshooting section to address common issues such as no electrical output, rough generator running, or appliances not working.
- Customer Service Support: Users are encouraged to contact customer service at 855-944-3571 or service@wpowereq.com for questions, assistance, or warranty claims, rather than returning the product to the store.
- Product Registration: Online product registration at wpowereq.com/pages/warranty-registration is recommended for trouble-free warranty coverage.
- User Manual Updates: The latest version of the user manual can be found online at wpowereq.com/pages/manuals.
The manual emphasizes critical safety instructions, including:
- Installation by a qualified electrician.
- Always turning off the main circuit breaker in the load center before installation or maintenance.
- Never operating the transfer switch or electrical equipment while barefoot or with wet hands/feet.
- Handling transfer switches with care during installation and never mounting a damaged unit.
- Using portable generators outdoors, at least 20 ft (6 m) from occupied spaces, with exhaust pointed away.
- Installing battery-powered carbon monoxide detectors in living areas.
- Not overloading the generator's capacity.
- The product contains chemicals, including Di-n-butyl phthalate (DBP), known to the State of California to cause Developmental Harm.
Warranty:
MWE Investments, LLC provides a 5-year limited warranty to the original purchaser, covering defects in material and workmanship, including electrical or mechanical breakdown under normal use and maintenance. The warranty does not cover normal wear items, improper installation/use/maintenance, cosmetic defects, wear items like conduits/fittings, accessories, damages from extreme weather or acts of God, or modified products. The maximum liability is limited to the purchase price of the product.
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