CSLB C-10 Electrical ContractorPlanning and EstimatingEasy
An electrical contractor is preparing a material takeoff for a new commercial office building. The blueprints indicate a symbol for a specific type of receptacle: a circle with two horizontal lines through it, and a 'WP' next to it. What does this symbol represent?
- ADuplex receptacle
- BWeatherproof duplex receptacle
- CDedicated receptacle
- DQuadruplex receptacle
Show answer & explanationAnswer & explanation
Correct answer: B. Weatherproof duplex receptacle
The standard symbol for a duplex receptacle is a circle with two horizontal lines. The 'WP' annotation universally indicates 'Weatherproof', signifying that the receptacle is suitable for outdoor or wet locations.
Why the other options are wrong
- A. Incorrect. This is missing the 'WP' descriptor.
- C. Incorrect. Dedicated receptacles have different specific markings.
- D. Incorrect. A quadruplex would have four lines, not two.
Weatherproof Receptacle Symbol
An electrical blueprint symbol indicating a duplex receptacle designed for outdoor or wet locations, protected against moisture and environmental elements.
- Standard duplex symbol (circle with two horizontal lines).
- Annotated with 'WP' for weatherproof.
- Requires a suitable enclosure and/or GFCI protection (depending on location).
Memory trick: Blueprint 'SYMBOLS' tell a story: 'WP' means rain can't stop the power.