Hello all? I am to take the Washington State 01 test? I have taken the test before, but was not able to pass the calculations part and could use some help as to how to do them the correct way?. I have below some of the questions that were asked on my first time, and could use some help as to the steps used and articles that are referred to so that I can use them as a reference and be able to do on my own. Thank you to all that reply.
Question #1
Given: A multi dwelling has 4 units with 1,800 sp ft each. Building has no common area loads and none of the units contain laundry facilities.
Each unit has:
13Kva Range
1.2Kva dishwasher
.6Kwa disposer
120V compacter 12A
120V A/C 18A
2.5 Kva 240V heater
Answers:
1: 240
2: 250
3: 258
4: 269
=============================================
Question #2
Given: 120V/240V 3 wire service multi dwelling has 13 units with 1,700 sq. ft.
Each unit has:
12Kva Range
1.5Kva dishwasher
.6Kva disposer
120V A/C at 23A
2.5Kva 240V heater
Don not consider house and laundry
Use optional
Answers:
1: 610
2: 625
3: 640
4: 655
=============================================
Question #3
Given: 240V 3 phase delta system, one 15hp 3 phase motor, two 10hp 3 phase motor, one 50hp 3 phase motor. The 50hp is rated for 5 minutes interval only
Size feeder with inverse time CB
Answers:
1: 300
2: 350
3: 400
4: 450
=============================================
Question #4
Given: Duplex 120V/240V 1 phase service each 1,900sq ft
9Kw Range
5A disposal
11A dishwasher
3Kw hot water
20Kw heater
3-21A 240V A/C
Using Standard in Amps
Answers:
1: 256
2: 282
3: 299
4: 321
[ March 17, 2005, 03:46 PM: Message edited by: traderx ]
Question #1
Given: A multi dwelling has 4 units with 1,800 sp ft each. Building has no common area loads and none of the units contain laundry facilities.
Each unit has:
13Kva Range
1.2Kva dishwasher
.6Kwa disposer
120V compacter 12A
120V A/C 18A
2.5 Kva 240V heater
Answers:
1: 240
2: 250
3: 258
4: 269
=============================================
Question #2
Given: 120V/240V 3 wire service multi dwelling has 13 units with 1,700 sq. ft.
Each unit has:
12Kva Range
1.5Kva dishwasher
.6Kva disposer
120V A/C at 23A
2.5Kva 240V heater
Don not consider house and laundry
Use optional
Answers:
1: 610
2: 625
3: 640
4: 655
=============================================
Question #3
Given: 240V 3 phase delta system, one 15hp 3 phase motor, two 10hp 3 phase motor, one 50hp 3 phase motor. The 50hp is rated for 5 minutes interval only
Size feeder with inverse time CB
Answers:
1: 300
2: 350
3: 400
4: 450
=============================================
Question #4
Given: Duplex 120V/240V 1 phase service each 1,900sq ft
9Kw Range
5A disposal
11A dishwasher
3Kw hot water
20Kw heater
3-21A 240V A/C
Using Standard in Amps
Answers:
1: 256
2: 282
3: 299
4: 321
[ March 17, 2005, 03:46 PM: Message edited by: traderx ]