WA Electrician case studies
WA Electrician · Put your knowledge to work in context.
The Washington State Electrician Certification Exam is the knowledge assessment that Washington's Department of Labor & Industries (L&I) uses as part of its electrician certification program, which covers trainee, journeyman, master, and specialty certificate holders. It is intended for electricians who need to demonstrate command of electrical theory and code requirements alongside Washington-specific installation and licensing rules before working unsupervised in the state. The WA Electrician case studies are 5 cases and about 3,504 words.
1Adding an EV Charger to a 100 A Dwelling Service
A 2,400 sq ft single-family dwelling is served by a 120/240 V, single-phase, 100 A overhead service with 2 AWG aluminum service-entrance conductors. The owner is finishing a remodel and wants four loads energized at once: a 9.6 kW free-standing range, a 4.5 kW storage-type water heater, a 5.0 kW clothes dryer, and a 48 A (11.5 kW) Level 2 EVSE in the attached garage.
554 words, about 3 min2Eight Current-Carrying Conductors in One Rooftop Conduit
An HVAC replacement adds a rooftop unit on a 45 ft run of 3/4 in. EMT from a 200 A panel to a rooftop disconnect.
685 words, about 3 min3Nuisance Tripping on a Lift Station Pump Motor
An unattended wastewater lift station has a 10 hp, 208 V, three-phase, 3,500 rpm submersible pump motor started across the line by a NEMA combination starter with an adjustable thermal overload relay and a molded-case circuit breaker. The nameplate reads 26.0 A, service factor 1.15, 60 Hz, continuous duty, 40 °C ambient, code letter F.
732 words, about 4 min4Bringing an Older In-Ground Pool Up to Code
A 1970s in-ground pool is being corrected after a pre-sale inspection. Present conditions: a 1.5 hp, 240 V single-phase pump motor on a 20 A two-pole breaker in a subpanel at a detached garage 60 ft from the pool; that subpanel is fed by 6/3 NM cable run through the garage attic; the pump is fed with THWN in buried PVC with a green insulated conductor; the pump has no GFCI.
790 words, about 4 min5Unpermitted Work in a Rental Duplex
owns a duplex in unincorporated Pierce County, an L&I electrical jurisdiction. He occupies one unit and rents the other.
743 words, about 4 min