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Expert tells House panel UL 3700 already covers safety for plug‑in solar; committee weighs referencing standard in S202
Summary
An engineer told the House Energy and Digital Infrastructure committee that UL 3700, a newly published safety standard, addresses touch safety, interconnection and testing requirements for plug‑in solar devices, leading members to consider referencing the standard in S202 rather than listing technical requirements in statute.
Representative Kathleen James convened the House Energy and Digital Infrastructure committee on April 3 to take testimony on S202, a bill to set safety requirements for plug‑in solar devices that can be plugged into household outlets.
Bill Brooks, a registered professional engineer and principal at Brooks Engineering, told the committee that the UL 3700 standard — which he described as an "umbrella standard" — addresses the main safety concerns committee members had raised, including utility interconnection, touch safety, and compatibility with household wiring and protective devices. "I would classify UL3700 ... as an umbrella standard," Brooks said, adding that the standard brings together testing and performance requirements from related documents.
Brooks explained that UL 3700 sits in a family of standards that includes UL 1741 and references interconnection and grid‑support…
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