Electrican Question - For a School Paper Not a Real Scenario
This is to prepare a "defense" for a school law paper. I am certainly not going to mess with electricity so rest assured.Here is my scenario.An electrician with 10 years of experience turned on a breaker without testing for short circuits first. (According to the scenario, this step of testing for short circuits is a basic thing to do.) The electrician gets electrocuted and then tries to sue the company for negligence.My contention would be that with 10 years of experience a licensed electrician should know this.So, can you give me the basic steps an electrician would follow to turn the breakers back on?
Re: Electrican Question - For a School Paper Not a Real...
The breaker is to protect the wire. Turning it on first is done all the time. If a short exists, the breaker should trip to protect the wire and avoid a fire. The electrician would have to be touching bare copper or aluminum to get bit turning on a breaker, unless it was a very large circuit. So I assume he/she was probing inside some cabinet or box. More detail is needed.
GFCI breakers and receptacles, as well as arc fault breakers protect people from shock.
What company would he/she sue; the breaker/panel manufacturer, equipment being energized, company that owns the bldg. or company that leases the building, or another company that ordered the work?
The electrician tests for shorts on larger circuits where arc flash could result upon initial energizing - first time turning breaker on. For branch ckts he/she just turns it on and goes to test the voltage (and rotation if a 3 phase motor) where utilized.
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1) Oil pump problem
2) Oil pressure sensor/sender problem
3) Oil pressure guage problem.
4) Bad wire connection between sensor and guage
Being really "Old School" I'd see if it is possible to install a "real" oil pressure guage so that I knew what was happening.
- If you don't have oil pressure within 10 seconds of the engine starting I would be concerned.
- How many km on the engine?
- maintenance history?
- problem history?
- Are you the original owner?
Reply as a COMMENT to this post and I'll try to help.
Hi, just to let you know and to be honest to you on this problem, if you are not a certified service tech, and certified through the E.P.A with your card, you can't even buy any type of refrigerant other then what they sell for your auto now the R-134a. You are going to have to have this done for you. R-407 comes only in 30lb. jugs from a/c wholesale only places for certified contractors, and we must show our certification card that we have been through school for safe handling of all freon. This law went into affect in 1992, so I am sorry to give you this news. If you know this is the problem for sure, make some calls to a/c repair companies to see what they will charge you to check this out for you. I wish you the best of luck on this, but this has been the law for a lot of years. The R-134a that you can buy is ozone friendly, so you can buy it but no other kind as there are over 100 different types of freon on the market. Best of luck to you on this. Sincerely, Shastalaker7 A/C, Heating & Refrigeration Contractor
that depends - it sounds like fan motor going out or a foreign object. With a flashlight go outside and observe the unit running ( ideally during the malfunction ), you will want to shine the flashlight into the louvers of the case so that you can see inside the unit (( depending on construction)). Look for bent / loose fan blades and/or foreign materials. If no obvious obstructions are found you will need to consult a qualified person. To give you an idea of what you can expect I will construct a repair scenario : Service call : $65 - $90 Fan Motor : $ 80 - $150 Fan Blades : $ 30 ( hopefully you can re-use your old one if it is not damaged)
The only other thing that it could be is the compressor, if that is the case don't bother repairing. Get a new unit. Take my example, add it up and compare it to a new unit with a least as much or more BTU output. If repair costs are 50% or more of a replacement unit I would recommend replacing it with a new one.
A few words on selecting the right repairman.
If you choose to consult a repair service check to see if they are listed with the BBB. Ask around - friends & relatives may be able to point you to somebody. Take advantage of vocational programs in your area : Most vocational schools have heat and air classes. The young people attending these classes will sometimes repair your unit for parts cost to get the practice ( check with the school)
hey mary you might be right about the cleaning which would possibly cause icing also a low refrigerant level.which supprising you would think would cause it to be warmer but refrigerant doesnt work that way,depends on the pressure level in the system causes refrigerant to change its properties.my advice is that if it was under 2 or 3 hundred dollars,get a deal on the cleaning if possible which is unlikely,but window ac system are more or less disposable items.so maybe get a new one and donate that one to a tech school in your area