Bringing in an external electrical design team.

Separate the work from the decision to outsource.

There are two questions to answer. What needs to be developed or updated? And which parts can another team produce from the information you can supply?

For an MCC upgrade, the answer might include the SLD, feeder schedule, panel drawings and cable register. The design basis, operating constraints and approval decisions still need named owners. Write those boundaries down before asking anyone for a price.

External support is easier to manage when the work can move through a drawing register and an agreed issue process. If the package depends on undocumented site conditions or decisions still being made, identify those gaps first.

Give bidders the same starting point.

Supply a deliverables list, an example of the source information, the applicable project standard and the required software. Include the title blocks, symbol libraries and file-naming rules that the team must follow.

A drawing count alone is not enough. Updating a current source file is different from rebuilding a drawing from a scan. Reconcile the assumptions in each proposal before comparing the total.

The drawing brief guide provides a practical input list. The vendor checklist helps structure the supplier review.

Ask how a disagreement in the inputs is handled.

A load list and an MCC schedule may use different tags. A vendor layout may conflict with the model. Ask the proposed team how it will identify the question, who receives it and what happens to work that depends on the answer.

Do the same for review comments. Name the person who consolidates comments, set the issue sequence and agree the revision allowance. Otherwise a series of small changes can become a different package without anyone noticing.

Compare the complete scope and cost.

Include preparing inputs, getting onto your standards, drawing or model production, checking, coordination, review and handover. Identify any calculations, field verification, surveys or statutory review separately.

A low rate is not proof of a low package cost. A high rate is not proof of better checking. Ask for the assumptions and exclusions behind each estimate. Our budgeting guide explains the main drivers; the comparison worksheet uses your own numbers.

Agree access and handover before files move.

Tell the supplier which NDA, data environment and access approvals apply. Establish how current revisions are transmitted and how superseded material is identified.

At the other end, list the native files, PDFs, drawing register and revision information you need. A handover should fit your document-control process, rather than leave someone to reconstruct it afterwards.

Start with a scope both teams can review.

A smaller first package can establish the templates, query process and review arrangements. Agree its deliverables, price and acceptance criteria first. Judge the working relationship and information quality, not whether a supplier offers a complimentary sheet.

Advanced Mechanix’s core scope is industrial electrical documentation , control panel drawings and plant BIM . The project FAQ covers the questions we agree with a team before production starts.