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Certificates of insurance for electricians: COIs, AI and waivers
A certificate of insurance proves you carry coverage. It doesn't add anyone to your policy. When a GC asks for additional insured status or a waiver, your policy needs the matching endorsement first, and the certificate just reports it.
Key takeaways
- A certificate of insurance (COI) is proof of coverage, not coverage. The standard ACORD 25 form says so in its own header.
- Each special request needs its own endorsement on your policy. That includes additional insured status and a waiver of subrogation. A checked box on the certificate doesn't create one.
- Electrical work can cause damage long after closeout. That's why commercial exhibits often want additional insured status for completed operations, not just for the time you're on site.
- Read the contract's insurance exhibit before you sign. The limits, the forms, the years of completed-ops coverage and the notice terms all live there.
- Already a client? Certificates on coverage you already carry go out the same day. New endorsements go to the carrier first.
What a GC means when it asks for your COI
The email says "send your COI before you mobilize." That COI is a certificate of insurance for contractors, and the request behind it is bigger than it looks. Often, a page or two of insurance rules sits in the subcontract. The GC wants proof that your policy answers first if your crew starts a fire or someone trips over your wire cart.
Property managers send the same request before a tenant fit-out. School districts send it before a lighting retrofit. Utilities send it before line work or an interconnection job. The names change, but the ask has two parts. First, proof that you're insured. Second, the right to be covered under your policy for claims tied to your work.
The first part is easy. A certificate can go out in an hour. The second part lives in your policy, and it has to be there before the certificate says it is.
What a certificate of insurance for contractors actually proves
Most COIs on job sites use the ACORD 25. It's the trade's standard one-page liability certificate. It lists:
- the producer (your agent) and the insured (your legal business name)
- each insurer and policy number, with start and end dates
- your limits for general liability, auto, umbrella, and workers' comp with employer's liability
- two narrow columns marked ADDL INSD and SUBR WVD, which flag additional insured status and waived subrogation
- a description of operations box, the certificate holder, and a cancellation box
The header is the part nobody reads. In capital letters, it says the form is for information only. It gives the holder no rights. It does not change the policies it lists. It also warns that additional insured status needs an endorsement on the policy itself.
Some states write this into law. New York bars anyone from demanding certificate wording the policy doesn't contain. It also says a certificate can't change the policy behind it (see electrician insurance in New York).
Texas law says a certificate is not a policy and doesn't change the coverage (more on Texas electrical contractor insurance).
Certificate holder vs. additional insured
A certificate holder is just the party that gets a copy of the certificate. An additional insured gets written onto your policy through an endorsement. That gives it coverage under your general liability for claims tied to your work, within the endorsement's terms.
Example scenario: A two-van shop wires a tenant space in a strip center. The property manager is listed only as certificate holder. A year later, a loose lug in the new panel starts a fire that spreads next door.
The neighbor sues the owner and the electrician. With no additional insured endorsement, the owner's own insurer has to defend it. That's the exact result the COI request was meant to prevent.
The endorsements behind a contractor COI, decoded
Here's what each common request means and the standard form usually behind it. Carriers may use newer editions or their own forms, so the form number on your policy can differ.
| What the contract says | What it means for you | Common standard form |
|---|---|---|
| Additional insured, ongoing operations | The GC or owner is covered under your GL for claims from your work while you're on the job | ISO CG 20 10 |
| Additional insured, completed operations | That coverage continues for claims that show up after you finish | ISO CG 20 37 |
| Primary and non-contributory | Your policy pays first and doesn't ask the GC's insurer to share | ISO CG 20 01 |
| Waiver of subrogation (GL) | Your GL insurer gives up its right to recover from the GC after paying a claim | ISO CG 24 04 |
| Waiver of subrogation (comp) | Your comp carrier won't go after the GC to recover what it paid on a crew injury | NCCI WC 00 03 13 |
| Additional insured on auto | The GC is covered under your auto liability | ISO CA 20 48 |
Ongoing vs. completed operations: why electricians need both
Completed operations covers injury or damage that shows up after your work is done. Standard GL forms give those claims their own pot, the products-completed operations aggregate, which sits apart from your general aggregate.
For an electrician, that's where the risk sits. A backstabbed receptacle or a loose neutral can sit quiet inside a finished wall for months. Ongoing-ops coverage alone (CG 20 10) stops protecting the GC once you leave. The completed-ops form (CG 20 37) is what reaches the fire that starts after closeout. See general liability for electricians for how that coverage works on your own policy.
The 2013 and later ISO forms put limits on what the GC gets:
- coverage only when you, or someone working for you, caused at least part of the injury or damage
- only to the extent the law allows
- no broader than your written contract requires
- capped at the lower of the contract's required amount or your policy limits
Contracts often say how long completed-ops coverage must last. One large GC's published sample subcontract sets five years. Subs must keep the coverage, with the GC as additional insured, for at least five years after the work is substantially done.
Primary and non-contributory
This settles whose policy pays first. Your policy responds before the GC's, and your insurer doesn't ask the GC's insurer to chip in. On the standard ISO form, it applies only when your written contract calls for it.
A waiver of subrogation does not make your coverage primary. They're separate endorsements, and a contract that asks for both needs both.
Waiver of subrogation, on GL and on comp
Subrogation is your insurer's right to get its money back from whoever else caused the loss. A waiver gives that right up in favor of the party you agreed in writing to protect.
Exhibits often want waivers on your GL, auto, umbrella and workers' comp. The comp waiver is its own endorsement on your comp policy. Carriers may charge for it. For example, in Indiana's assigned-risk plan, blanket comp waivers aren't available and each requested waiver carries at least a $250 charge. What you pay depends on your payroll and class codes, revenue, loss history, the type of electrical work you do and the limits you pick.
More on comp in Indiana: electrician insurance in Indiana. For how comp waivers fit your policy, see workers' comp for electricians.
Blanket vs. scheduled endorsements
A blanket additional insured endorsement automatically adds anyone you're required by contract to add. A scheduled one names each party, one job at a time.
Once you run more than a few GC jobs a year, blanket wording usually means faster certificates. Still check two things. It should reach completed operations. It should also cover the owner and everyone else the contract lists, not just the GC.
Minimum limits GCs, property managers and utilities ask for
The number is in the exhibit. It's often more than a starter policy carries. A common small-contractor GL setup is $1 million each occurrence with a $2 million annual aggregate.
Here's what one large GC's published sample exhibit requires from every subcontractor:
- general liability at $1 million per occurrence, with $2 million aggregates that apply per project
- employer's liability at $1 million per accident and per disease
- auto liability at $1 million
- a $5 million umbrella that follows the form of the policies below it
- contractor's pollution liability for MEP trades, electrical included
- insurers rated A- VII or better by AM Best
- 30 days' notice of cancellation to the GC
Two of those catch electricians off guard. The umbrella is the usual way to close a limits gap; see umbrella insurance for electricians. The pollution line surprises shops that think of pollution as a plumber or abatement problem. Lamp and ballast retrofits can bring it into play. Read pollution liability for electricians before you bid that kind of job.
Utility and industrial owners usually write their own exhibits. Line, underground and substation work can come with higher limits and extra auto and pollution terms. Our utility and line contractor insurance page covers those jobs.
How to read a contract's insurance exhibit before you sign
Ask for the insurance exhibit at bid time, not at mobilization. Then walk it line by line.
- Find it. It may be called Exhibit B, insurance requirements, or sit inside the general conditions.
- List every coverage and limit. Hold each line up to your declarations pages and circle the gaps.
- Check the forms it names. "CG 20 10 and CG 20 37 or equivalent" often matches a blanket endorsement. A named edition may need a closer look.
- Find the completed-ops period. Five years means keeping the coverage, and the GC's status on it, for five years.
- List who gets what. The GC, the owner, the architect and "others as required" may all need additional insured status and waivers.
- Read the cancellation terms. The ACORD 25 says notice goes out per the policy provisions. A 30-day notice promise to the holder may need its own endorsement from your carrier.
- Have an attorney read the indemnity clause. Your GL may cover some contract liability as an "insured contract," but not every promise you sign.
- Send the exhibit to your agent before you sign. If an endorsement adds premium, it belongs in your bid.
How to get a certificate of insurance for a new contract
Send your agent four things:
- the certificate holder's legal name and mailing address, exactly as the contract shows them
- the project name and address
- the insurance exhibit
- the date the GC needs it
If you're a current client and the coverage already exists, we can issue the certificate the same day. If the exhibit needs a new endorsement, the carrier has to add it first. That can take longer, and it may change your premium.
If you don't have a policy yet, there's nothing to certify. You need bound coverage before any certificate can go out. Start your quote and attach the exhibit, so a licensed agent can quote the endorsements along with the policy.
When a COI request means your coverage needs to grow
For many shops, a big certificate request is the first sign a starter policy is too small. Watch for these moments.
- Your first GC subcontract. You'll likely need blanket additional insured for ongoing and completed operations, plus primary wording and waivers.
- Your first $5 million exhibit. That usually means adding an umbrella.
- Your first wrap-up job. An owner or GC program may cover you on site, with gaps you still have to fill. See wrap-up insurance for electrical contractors.
- Your first subs. Now you're the one collecting certificates. Read 1099 subcontractors and workers' comp before your next audit.
Frequently asked questions
Do all electrical contractors need a COI?
How do I get a certificate of insurance?
Can an independent electrician get a COI?
How hard is it to get a COI?
Does a certificate of insurance cost money?
Do I need a COI for my LLC?
The verdict on certificates of insurance for contractors
A certificate of insurance for contractors is a receipt, not a policy. The words that protect the GC live in your endorsements. Those same endorsements keep you in line with your subcontract.
So here's the move. Get the exhibit at bid time, match it to your policy, and fix the gaps before you sign. Then the COI email becomes a same-day reply instead of a stalled start.
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