A Class A Gas Fitter Certificate of Qualification allows you to perform installations and alterations on any gas system, except vehicle fuel systems, under a permit.
Your Class A Gas Fitter certificate also allows you to perform certain kinds of electrical work. This work is restricted to the installation, repair, and maintenance of electrical wiring for solid, liquid, and gaseous fuel-fired heating equipment, for any of the following:
- connecting branch circuit wiring to the heating equipment’s integral connection box, from a junction box or a disconnect, mounted in close proximity to the heating equipment
- Class 2 circuit wiring up to a rated output of 100 Volt amps
- low voltage controls or 24 Volt thermostats
- three-phase motors or controllers integral to the heating equipment
To obtain this certificate, you will need to meet certain eligibility requirements and pass an exam.