General liability and what the subcontract asks for
A general contractor will usually want your certificate of insurance before an electrician sets foot on the site, and the subcontract behind that request sets the terms. General liability is the policy that responds when your work is blamed for an injury or for damage to property that is not yours. Read the subcontract for four common demands: the GC named as an additional insured, your policy primary and non-contributory, a waiver of subrogation, and limits above what you carry. Treat each one as a question to put to the policy, not an assumption about it.