What we do in the factory
- Distribution board per module, sized to the unit's load and to the site supply it will connect to.
- Subcircuits, power and lighting to the module's drawings, roughed in while the frame is open and fitted off when the linings are on.
- Data, comms and security cabling in the same pass, so the module arrives ready for the site's network.
- Testing and commissioning of every circuit, recorded against the module's serial, with insulation resistance, polarity, earth continuity and RCD tests done before it leaves.
- Certification. A certificate of compliance for the module's installation.
What we do on site
When the modules land, the electrical work is interconnection: submains between modules and to the site main switchboard, joining the modules' circuits where the design splits across them, external lighting and services, final testing of the completed installation, and the site certificate. Because the modules were tested in the factory, site time is short and the surprises are few. Our guide to modular building electrical fit-out and commissioning walks through both ends of the job. That photo above is 1 of our electricians testing a modular unit with the cabling still open.
Why manufacturers use a contractor rather than in-house sparkies
Throughput varies. A manufacturer with 3 in-house electricians is overstaffed in a quiet month and 2 weeks behind in a busy one. A contractor with 10 electricians flexes to the line: 1 electrician on a slow week, 4 on a big order, and the compliance paperwork is done the same way every time regardless of who was on the tools. The manufacturer keeps the certification consistent and gets the labour it needs when it needs it.
Site types
Modular classrooms and school buildings, site offices and accommodation, medical and consulting modules with body-protected areas where the design calls for them, commercial and retail modules, and transportable homes. Where the site is a school or a health facility, the sector's own compliance regime applies to the completed installation and we build to it from the factory.