Electricity Tips

Electricity Tips

Switch “140” = standard height for convenience outlet
- 30 cm finish floor

180 cm circuit breaker
3 meter tube

1.) Two kinds of electrical wire (cable)
a.) Solid wire
b.) Stranded wire


1.) For Solid Wire

20 mm² or #14
5.5 mm² or #10
3.5 mm² or #12
#22 mm²
#8 mm²
#6 – 14 mm²
#30 mm²

2.) For stranded wire

2.0 mm² #14
3.5 mm² #12
5.5 mm #10
3.6 mm #8
14 mm² #6
22 mm²
30 mm²
38 mm²
50 mm² = 80 amp
60 mm² = 100 amp
80 mm²
100 mm²
125 mm²
150 mm²
200 mm²
250 MCM
300 MCM
400 MCM
500 MCM
600 MCM
700 MCM
750 MCM
750 MCM
1000 MCM
10000 MCM
MEM = thousand for circular mills


Size of wire & breaker to be installed = 2.0 mm²

15 Ampere = 2.0 or #14
20 Amp = 3.5 or #12
30 Amp = 5.5
40 Amp = #8 or 3.6
50 Amp = 14mm or #6
60 Ampere = 22mm
70 Ampere = 30mm
80 Amp = 50mm
100 Amp = 60mm

2 x 746 watts ÷ 230 Voltage = Emperahe


Electrical tools Materials & test equipment

1.) Multi test
2.) Clamp tester
3.) Test light
4.) Electrical plier
5.) Electrical long nose
6.) Philip screw
7.) Flat screw
8.) Holster
9.) Electric Drill
10.) Electric Gun Heater
11.) Wire Stripper
12.) Ball pen Hammer
13.) Electrical tape or Rubber tape
14.) Portable Compact puller
15.) Electrical Grinder
16.) Crimper tools
17.) Circuit Breaker
18.) Safety Switch
19.) Fuse Cutt out Box
20.) Service entrance cap.
21.) Fuse link
22.) Double throw
23.) Junction Box
24.) Utility Box
25.) Solderless connection
26.) Ground Rod
27.) Bolt Cutter
28.) Megger tester




Color guide for electricity

Red Line1 =
Black Line2 = common
Yellow = Return = Traveller
Blue = Return = Traveller
White = Ground
Green = Ground


Material used for motor rewinding
Magnetic wire #31 #33

1. wire #31 = for starting winding
2. wire #33 – for running winding
wire #31 & 33 = motor ¾ or ¼ pounds
3. Plastic mylar
4. copper tube ¼ inches diameter
5. metal screw 3 inches or 4 inches
6. wood 4” x 5” X ½
7. ( insulating varnish)
8. Nylon tie / cable tie


Electrical computation guidelines

1.) Aircon / p =

746 watt
________
230 volt
I = 3.24 Amp

2.) Aircon 2Hp “HoursPower”
746 x 2 HP = 1492 watt
_________
230 volt
I = 6.48 Amp

3.) Reff = 1500 watt
__________
230 volt
I = 6.52 Amp

4.) Convenience Outlet = 12 pcs. X 180 watt
_____________
= 2160 watt

2160 watt
__________
230 volt
I = 9.39 Amp

5.) water heater = 3000 watts
________
230 volt

I = 13.0 mp

6.) Pump motor = 2500 watt
_________
230 volt

I = 11 Amp = 20 amp = #12 or 3.5 mm²

7.) Range = 1500 watt
_________
230 volt

I = 7 Amp

8.) Light or “watts ng ilaw”
100 watt x 8 pcs. Light
= 800 watt
___________
230 volt

I = 3.48 Amp.


Size of wire = 2.0 Thhr circuit breker
= 15 Amp.



Different Wiring Methods

Number @ type raw @ tHHN TW wires in circuit

Size of wire Number of wires to be installed
2 3 4 5 6
12 - 3.5mm ½ ½ ½ ½ ½
14 / 2.0 mm² ½ ½ ½ ½ ½
10/5.5 mm² ½ ¾ ¾ 1 1
8 ¾ ¾ 1 1 1
14 mm² 1 1 ¼ 1 ¼ 1 ½ 1 ½
22 mm² 1 1 ¼ 1 ½ 1 ½ 1 ½
38 mm² 2 2 2 ¼ 2 ¼ 2 ½
50 mm² 2 ½ 2 ½ 2 ½ 3 3
60 mm² 3 3 3 3 3 ¼