Posts tagged wiring

CHANGING A FUSE IN A KITCHEN APPLIANCE

These days, or at least in the Celtic Tiger era, we got into the bad habit of throwing things out when they didn’t work anymore – like the electric kettle.  It’s so easy and cheap these days to pick up a new toaster for €15 at your local supermarket that sometimes it’s an easier option than trying to identify and fix the problem.  But, we have to think about the environmental impact too – where do all those broken kettles and toasters go? Landfill!

Led fuse

Led fuse

Sometimes, a replacement fuse will sort it out.  It’s easy but again, take care: anything with electricity requires care and caution.  Below is an 8 step guide on replacing fuses in kitchen appliances.

1.    It is very important to select the correct fuse for a particular appliance. Putting in a stronger fuse is not the answer!
2.    When one buys a square pin plug (13A) it has a 13 amp fuse which can carry most of the electricity in your house.
3.    When replacing a fuse in an electrical device, first determine the POWER consumed by the device, written in W(Watts) or KW.
4.    Secondly, calculate the current by dividing the Power by 240Volts: this will tell you the actual current consumed by the device.
5.    Example 1: What fuse do I require for a 1 KiloWatt heater?. Note 1KWatt = 1000 Watts, Therefore- 1000W/240V = 4.16 Amps current.
6.    The nearest fuse is either a 3A or a 5A?. The 3A is slightly below the operating level but it’s safe.
7.    Although 3A is the best fuse for this job the next best is the 5A bus not the fuse that came with the plug.
8.    Another Example: an Electric Kettle. Its rating is 1850W. 1850W/240V = 7.7 Amps. The fuse to use would be 5A.

If replacing the fuse is just one of a number of jobs that you need to sort around the house, why don’t you put your list in your jobjar and give me a call.  I’ll travel anywhere in the greater Dublin area: Alan Rafter, Jobjar, 087 6617271.

Leave a comment »

THAT BROKEN DOORBELL

Jobjar's guide to checking your broken doorbell

Jobjar's guide to checking your broken doorbell

Most of the houses I call to have doorbells that don’t work or are in poor condition.  Usually, all that is needed is a little attention and time to repair.
Warning: BE SAFE: Messing around with electricity is dangerous if you don’t know what you are doing. It is always better to seek professional advice.
Here is a 7 step guide to check what’s wrong with your doorbell.
1.    A typical doorbell is made up of a few components: a push button, a bell/chime and a transformer. They usually operate between 6 – 24 volts.
2.    The Transformer is the power source and steps down the voltage from 220/240 volts to 6-24 volts to power the bell/chime.
3.    The push button on the door operates or completes the circuit and energises the bell/chime. Check the power first to determine if it’s broken.
4.    If there is no power ie 220Volts then check the fuse. Remove the power and tighten all the connections and test again.
5.    Still not working? Next test the push button or door bell, remove the two wires and short them together to operate the bell.
6.    If the bell works by shorting the wires together the push button needs replacement, if not the bell mechanism itself is suspect.
7.    At all times the state and quality of the wiring can effect its operation and may also be a cause of failure. So always beware.

If you’re in the greater Dublin area and you need help fixing your doorbell, give me a call:

Alan Rafter (Jobjar): 087 6617271

Leave a comment »

WIRING A PLUG

We’ve all got to start somewhere.  This is a 10 step guide to wiring a plug, aimed at those who’ve been fortunate enough to escape the most basic DIY jobs.  You know who you are.  Bet you’ve got other skills and talents though.

Warning on Wiring: messing around with electricity is dangerous if you don’t know what you are doing.  It is always better to seek professional advice.

1.    You need a flat screwdriver, a strippers and cutters. 1st cut back outside insulation ca 4cm exposing three insulated wires.

plug

2.    Ensure that none of the insulation on the three wires gets cut during the first part of this operation.
3.    The wires are BROWN for Live. BLUE for Neutral and GREEN/YELLOW for Earth. Cut the Brown wire to ca 2cm, the Blue to 3cm.
4.    Remove 1cm of insulation from the three wires and twist the exposed strands with your fingers to prevent them fraying.
5.    Remove the cover from the plug and loosen the three brass screws, also remove the two screws folding the restraining strap.
6.    Place the brown exposed wire in the brass terminal on the right hand side of the plug connected to the fuse, tighten screw.
7.    Place the exposed part of the Blue wire in the terminal on the LHS of the plug and tighten the screw, tight.
8.    Place the Earth wire (Green/Yellow) in the top centre terminal of the plug and tighten, re-tighten the other connections.
9.    Route the wire down the plug, place the Straining strap over the wire covering the outside insulation and tighten.
10.    Again inspect plug for loose or incorrectly connected wire, correct if necessary, then replace cover on plug, test ok.

Leave a comment »

Follow

Get every new post delivered to your Inbox.