SEIA 251

The SEIA 251 large commercial and industrial installation standard covers five sets of requirements and guidelines: contractor qualifications, design and equipment, installation, quality management and operations and maintenance (O&M), and inspection and verification.

Sample guidelines include how contractors demonstrate experience in terms of longevity, relevant project types and installation regions; and references from similar projects; how to optimize systems for annual performance; proper permitting, inspection, and compliance with electrical codes; monthly and semi-annual O&M tasks; and specific knowledge and professional credentials for system inspectors and verifiers.