Electrician

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“Electrician Interview Questions and Answers will guide here now that an electrician is a tradesman specializing in electrical wiring of buildings, stationary machines and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. So learn basic and advance electrician concepts by this Electrician Interview Questions with Answers guide”



30 Electrician Questions And Answers

21⟩ What does "14-2" mean?

This is used to describe the size and quantity of conductors

in a cable. The first number specifies the gauge. The second

the number of current carrying conductors in the wire - but

remember there's usually an extra ground wire. "14-2" means

14 gauge, two insulated current carrying wires, plus bare ground.

-2 wire usually has a black, white and bare ground wire. Sometimes

the white is red instead for 220V circuits without neutral. In

the latter case, the sheath is usually red too.

-3 wire usually has a black, red, white and bare ground wire.

Usually carrying 220V with neutral.

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22⟩ What is The Electrician?

The Electrician is a home electrical service created by The Electrician Service Co. Inc. serving homeowners, in Nassau and Suffolk Counties.

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23⟩ What is the difference between fuse and circuit breaker?

Fuse:

A fuse has a wire that melts with the heat of a short circuit or high current and interrupts the circuit. Once melted, you have to replace it.

Circuit Breaker:

A circuit breaker interrupts the current without melting ( a pair of metal sheets with different thermal expansion coefficient, for example) and can be reset.

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25⟩ What about solar electricity?

An electrical contractor can install solar panels to your property. Excess energy collected by your solar panels is fed into the electrical grid. You receive credit for power generated on your electricity bill.

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27⟩ My house does not meet some of these rules and regulations. Do I have to upgrade?

In general, there is no requirement to upgrade older dwellings,

though there are some exceptions (ie: smoke detectors in some

cases). However, any new work must be done according to the

latest electrical code. Also, if you do ``major'' work, you

may be required to upgrade certain existing portions or all

of your system. Check with your local electrical inspector.

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28⟩ Breakers? Ca not I use fuses?

Statistics show that fuse panels have a significantly higher

risk of causing a fire than breaker panels. This is usually

due to the fuse being loosely screwed in, or the contacts

corroding and heating up over time, or the wrong size fuse

being installed, or the proverbial "replace the fuse with a

penny" trick.

Since breakers are more permanently installed, and have better

connection mechanisms, the risk of fire is considerably less.

Fuses are prone to explode under extremely high overload. When

a fuse explodes, the metallic vapor cloud becomes a conducting

path. Result? From complete meltdown of the electrical panel,

melted service wiring, through fires in the electrical

distribution transformer and having your house burn down.

Breakers won't do this.

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29⟩ What services do you provide?

We provide the following:…

► Residential electrical work, central heating, cooling and air filtration

► Convenient, secure online self-scheduling for all your electrical needs

► Extended hours of operation: 7am -7pm

► Discounted member rates on labor and services

► A Home Electrical Safety Survey of all electrical systems for members

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