National Flooring Equipment 4230, Руководство по обслуживанию, Страница: 8 / 40

Safety
8
RECOMMENDED ELECTRICAL PRACTICES
CAUTION: ALWAYS FOLLOW APPLICABLE ELECTRICAL CODES, STANDARDS AND/OR REGULATIONS. CONSULT YOUR LOCAL
ELECTRICAL AUTHORITY OR A LICENSED ELECTRICIAN BEFORE ATTEMPTING TO MODIFY AN ELECTRICAL INSTALLATION. ENSURE
THAT CIRCUIT AND GROUND FAULT PROTECTION DEVICES AND ALL OTHER ELECTRICAL SAFETY EQUIPMENT ARE FUNCTIONING
PROPERLY.
Power Cord Sizing
All cords should be sized appropriately to reduce the risk of damage, fire or reduced performance. Reference the tables in this section for
recommended cord sizes.
Table Information
These tables are based on a <10% voltage loss, data from the U.S. National Electrical Code Tables 400.5(A) & 400.5(B) and typical resistances
for standard copper wire.
How To Use This Table
1. Determine your supply voltage.
2. Determine the total length of your cord including any extension cords.
3. Determine the maximum amp draw for your machine.
4. Trace your voltage across the top of the table to the first length that is greater than or equal to your cord length.
5. Follow the column down to the first row that contains a maximum amp draw greater than or equal to yours.
6. This cell contains the minimum recommended wire size for your application.
Example
Application: Max Amps = 13A, Length = 60ft, Voltage = 120V
Solution: 60ft is between the 50ft and 75ft columns, so the larger of the two columns is chosen. Likewise, 13A is between the 12A and 14A
rows, so the larger of the two rows is chosen. 12 AWG (4mm
2
) is the minimum recommended wire size for this example.