Mayfield has operated continually since 1936 and our reputation has been founded on our switchboard manufacturing capability. This understanding has allowed us to develop and manufacture … Mayfield has operated continually since 1936 and our reputation has been founded on our switchboard manufacturing capability. This understanding has allowed us to develop and manufacture Motor Control Centres and Transportable Switchrooms suitable for the operation and long life expectancy of the electrical equipment housed inside and out in the field. Mayfield has undergone a series of audits before being approved as a local supplier and partner to a significant number of Tier One companies. Mayfield’s manufacturing services include design, engineering, sheet metal fabrication, electrical switchgear assembly, switchroom manufacture, testing and commissioning.