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Panel Schedule Panel ID Panel Location Fed From Amps Single Phase Three Phase Main Breaker Main Lugs Only VA Voltage Description Ckt Ckt Description Voltage VA Pipe Size Wire Size (AWG) Pole Brkr 1 / 240 1 / 8 277/ 480 Voltage Type Questions or comments about this form? (Linetophase would be 1V, but linetoline would be 8V in the case of 1/8V) Now for the kicker On a three phase panel, you can have 8V single phase and 8V three phase!
120/208 panel schedule
120/208 panel schedule-Step 4 Multiply the sum from Step 3 by 08 To protect circuits from power surges, electricians will generally use a breaker with an amperage rating 25 percent higher than the actual load created by the appliances attached By multiplying by 08, you are correcting for this safety feature(This is why checking the equipment schedule/name plate of your equipment is very important so you pull the right amount of wires to your equipment)
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You're probably overthinking it Your load list needs to distinguish between single phase 1 V loads, singlephase 8 V loads and threephase 8 V loads The continuous current (three hours or more) cannot exceed 80% of the breaker rating Some other basic things to consider select the Panel and make sure the Distribution System is applied (in the Modify Bar or in Properties) Since it's a single phase panel, make sure the Number of Poles are set to 2Pole rather than just 1Pole Make sure the 240V outlet is set to 2pole as well3Phase, 4 Wire, 1/240 Or 1/8Volt ;
CONSTRUCTION E NGINEERS 1 1 8 1 240 1 Manufacturer Mounting 277/480 1 277 1 480 1 Surface Flush Semi Model MLO or Main Breaker AIC Rating Panel Rating Sub Feed Lugs FeedThru Lug Portage, Indiana NEC 08 #2 A panel fed from a 4wire highleg delta will only have 8 from the B phase to the neutral, between any two phases you will have 240 volts and between A and C phase and the neutral you will have 1 volts But your question sounds like your meaning a panel fed from a 1/8 source which is a WYE Thus when you calculate branchcircuit, feeder, and service loads, you must use a nominal system voltage of 1V, 1/240V, 8Y/1V, 240V, 347V, 480Y/277V, 480V, 600Y/347V, or 600V unless otherwise specified (22) (Fig 1 below) Rounding — Refer to 02(B) to end the rounding mystery When the ampere calculation exceeds a whole number
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How you can fill out the Electrical Printable electrical panel schedules excel form online To get started on the blank, utilize the Fill camp; RE 1/8VAC panel main breaker size waross (Electrical) 6 Feb 09 51 If the heaviest loaded phase is 40 amps, assume the other phases are loaded at 40 amps This is line to line connected loads Because of phase angle differences the two 40 amp loads, do not sum to 80 amps but to 866 times 80 amps This conversion also adjusts the phase
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