1.16Element Wattage/Amperage Calculation Charts
Use the charts below when changing voltages or determining amperage for a given element configuration.
L1
Three Phase
Amperage
L2
L3
To determine Three Phase Amperage, solve for
Single Phase first:
Wattage | = Single Phase Amps | |
Voltage | ||
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Then divide the Single Phase Amperage by 1.73 to determine Three Phase Amperage.
Example:
17,000W | = | 70.833 Amps |
240V |
| 1.73 |
= 40.944 Amps per Phase
1.17 Troubleshooting
1.17.1 Control and Heating Problems
L1
Three Phase
Wattage
L2
L3
To compute the New Wattage Rating of an element if a different voltage is applied, use the following formula:
[NewOld VoltageVoltage | ]2 | X kW Listed |
= New Wattage Rating
Example:
If 208V supply is applied to a 17 kW element rated for 240V, the calculation is as follows:
[ | 208V | ] 2 | X 17,000 Watts |
240V | |||
= 12.77 kW |
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Problem |
| Probable Causes |
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| Corrective Action | ||
| A. Power cord is not plugged in or circuit | A. | Plug power cord in and verify that | ||||
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| breaker is tripped. |
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| circuit breaker is not tripped. | |
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| B. | If available, substitute a controller |
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| known to be working for the |
| B. | Controller has failed. |
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| suspect controller. If the substitute | |
Controller won't |
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| controller functions correctly, order |
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activate. |
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| C. | If any of the components in the | |
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| C. | Power | supply | component | or |
| power supply system (including the |
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| transformer and temperature control | |||||
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| temperature control board has failed. |
| board) fail, power will not be | |||
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| supplied to the controller and it will |
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| not function. |
