1.8 KiB
aliases, title, tags, up
| aliases | title | tags | up | ||||
|---|---|---|---|---|---|---|---|
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Subfeeds Takeoff |
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takeoff-scripts |
Subfeeds Takeoff
Use adders appropriate for the difference in elevation. Use an additional 10ft for makeup when using cable.
Tip
Identify if and where typicals can be used
Multi-Circuit Homerun Subfeeds
Typical of hotels and dormitories.
Route from panel to center of the room.
Wiring Method Selection
wiring-method-selection#Multi-Circuit Homeruns
Voltage Drop
If voltage drop is to be considered in takeoff, Use the table provided in the drawings. If no table is provided, use the following:
| Wire Size | Max Length |
|---|---|
| #12 | 100ft |
| #10 | 200ft |
| #8 | >200ft |
Unit Load Center Subfeeds
Route from meter center to unit load center.
Voltage Drop
Larger of the listed demand current and 80% of the panel rating.
Pigtail Adaptors
distribution-equipment#Pigtail Adaptors
Use where conductors are oversized (for voltage drop or otherwise).
| Load Center Size | Max Feeder Size |
|---|---|
| 100A | 2/0 AWG |
| 125A | 3/0 AWG |
| 150A | 4/0 AWG |
| 225A | 300 kcmil |
| 400A | 500 kcmil |
ITEM DATABASE/WIRE & CABLE ACCESSORIES/WIRE LUGS & SPLICING/PIGTAIL ADAPTORS.../ADAPTOR STRAIGHT PIGTAIL - ...
Meter Center Troughs
Only for PVC subfeeds where we own voltage drop.
Area= "Typical - Building Levels With Meter Centers"System= "Electrical"Phase= "Sub Feeders"
ITEM DATABASE/DISTRIBUTION/BUDGET ITEMS $ & LBR/METER CENTER WIRE TROUGH ($400/E)