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14 Cards in this Set
- Front
- Back
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Under what circumstances can you connect #1AWG (rated at 220A unbundled) to a 400A service? |
#1AWG 20 tails from the service to a subsequent 200A over current protection |
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If a normal show tie-in is a 120/208V, 400A, 3○ land power, and you know the maximum current draw on any given leg durning the show is 143A, what size generator would you spec out of the following? |
75kVA |
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Approximately how much resistance does 1000 of 4/0 have? |
0.047 |
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The base line meter test reads 0.4 ohms, the neutral to ground resistance reads 0.6 ohms and reversing the leads shows 0.2 ohms. What is the primary cause or causes, is it okay? |
DC voltage leak causing deflection in resistance check, system is okay with neural to ground resistance at safe level |
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On a branch circuit why will there be some voltage between neutral and ground when equipment is turned on and operating? |
Because of the return current on the neutral and the neutral and resistance from the length of the cable |
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2011 NEC table 400.5(A) (2) states the ampacity of cables. What is the ampacity of 4/0 rated for 90°C at an ambient temperature of 30°C (not bundled) |
405A |
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.SIO file |
Crossover file. Or module file |
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.LIO file |
Show file. Contains everything |
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When closing Clair lake controle soft wear from the menu option "Quit Controller" what type of file is created? |
Last config .HIO |
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If the Clair Lake controller software quits unexpectedly (i.e. computer crashes)... |
#1 Autosave .HIO #2 Autosave .BAK |
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Which of the following will not mute Auido? |
Recall Compare Recall as new system Do you want to recall the last system configuration |
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Steps to replace a frame |
Check firmware Factory rest amp From home click on the from you want to replace Click modules Click copy, frame replace Click replace frame Ping amp Click on frame that shows from amp Click replace frame Yes to prompt |
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What series 2 HI-D fan out make a balanced pair |
1&3 2&4 |
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What Cohesion HI-D fan out make a balanced pair |
1&2 3&4 |
