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I'm Engr M A Razzak, my son Kader Pial Cowdhury in front of me.

Sample of a Schedule of Electrical works

	Toma Construction & Company Limited						'Annexure-A'
	Tongi-Bhairab Bazaar Double Line Project
	Bill of Quantities
	Bill No-5, Subsection D : Stations & Buildings
Name of works:		Electrical works for Plat form Sheds & Foot Over Bridge.
Sl No.	BOQ No	Name of works		Unit	Quantity	Rate in Taka	Amount in Taka
273	D-3.1(a)	Concealed Point Wiring, Light Point		nr	275	71.86	19761.50
274	D-3.1(b)	Concealed Point Wiring, Fan Point		nr	110	71.86	7904.60
276	D-3.2(a)	Concealed Circuit / Power Point Wiring, 1C-2x2.5 Sq mm Cable with 2.5 sq mm ECC Wire through 16mm diameter PVC Pipe.		Lin m	1800	228.51	411318.00
277	D-3.2(b)	Concealed Circuit / Power Point Wiring, 1C-2x4.0 Sq mm Cable with 4.0 sq mm  ECC Wire through 20mm diameter PVC Pipe.		Lin m	600	228.51	137106.00
278	D-3.2(c)	Concealed Circuit / Power Point Wiring, 1C-2x6.00 Sq mm Cable with 6.0 sq mm  ECC Wire through 25mm diameter PVC Pipe.		Lin m	240	282.40	67776.00
281	D-3.3(c)	1C x 4 x 10 Sq mm Cable with 1C-1x10 sq mm  ECC Wire.		Lin m	600	521.69	313014.00
282	D-3.3(d)	1C x 4 x 16 Sq mm Cable with 1C-1x16 sq mm ECC Wire.		Lin m	600	658.22	394932.00
285	D-3.6(a)	Galvanized Iron (GI) Works, 19mm nominal ID		Lin m	48	697.74	33491.52
290	D-3.7(d)	One	Gang Switch		nr	385	83.36	32093.60
291	D-3.7(e)	Two-GangSwitch		nr	41	121.44	4979.04
292	D-3.7(f)	Three- Gang Switch		nr	39	135.81	5296.59
293	D-3.8	Ceiling Fan, AC Capacitor Type, 1422.4mm Sweep		nr	110	2453.96	269935.60
300	D-3.10(f)	Distribution Board 250V Grade with 6-32A SP MCB.		nr	22	1617.53	35585.66
302	D-3.11(a)	Fency Single Bracket Light Fitting.		nr	44	11016.57	484729.08
303	D-3.11(b)	1-4' x 40 Watt Fluricent Tube.		nr	220	773.19	170101.80
307	D-3.11(f)	40/60 Watt Lamp		nr	66	1833.82	121032.12
308	D-3.11(g)	100 Watt Lamp		nr	44	3334.94	146737.36
		Grand Total Taka					2655794.47
	Prepared By
	Engr M A Razzak
	Site-in-Charge (TBDLRP)

Basic Electrical Engineering

Series circuits:

Series circuits are sometimes called current-coupled or daisy chain-coupled. The current in a series circuit goes through every component in the circuit. Therefore, all of the components in a series connection carry the same current. There is only one path in a series circuit in which the current can flow.
A series circuit's main disadvantage or advantage, depending on its intended role in a product's overall design, is that because there is only one path in which its current can flow, opening or breaking a series circuit at any point causes the entire circuit to "open" or stop operating. For example, if even one of the light bulbs in an older-style string of Christmas tree lights burns out or is removed, the entire string becomes inoperable until the bulb is replaced.

Current

In a series circuit the current is the same for all elements.

Resistors

The total resistance of resistors in series is equal to the sum of their individual resistances:

Electrical conductance presents a reciprocal quantity to resistance. Total conductance of a series circuits of pure resistors, therefore, can be calculated from the following expression:

.

For a special case of two resistors in series, the total conductance is equal to: