These pages provide electrical professionals with essential information for completing electrical installations.
Product testing laboratories
Product testing laboratories are approved by L&I to perform listing, labeling, and field evaluation of electrical products to ensure they meet electrical product safety standards.
Electrical utility providers
Find out what utility company or PUD provides your electrical service. You should consult with your serving utility before performing an electrical installation to make sure your electrical service meets their requirements. You will also need to know who your serving utility is for your permit application.