eCFR.io
Daily eCFR

Table B-4 to Subpart B of Part 53—Line Voltage and Room Temperature Test Conditions

Line Voltage and Room Temperature Test Conditions

CorpusDaily eCFR
Displayed edition2026-04-27
Last updated2026-04-27

Table B-4 to Subpart B of Part 53—Line Voltage and Room Temperature Test Conditions

Test dayLine

voltage,1 rms
Room

temperature,2 °C
Comments
011525Initial set-up and adjustments.
112520
210520
312530Adjustments and/or periodic maintenance permitted at end of tests.
410530
512520
610520Adjustments and/or periodic maintenance permitted at end of tests.
712530Examine test results to ascertain if further testing is required.
810530
912520Adjustments and/or periodic maintenance permitted at end of tests.
1010520
1112530
1210530Adjustments and/or periodic maintenance permitted at end of tests.
1312520
1410520
1512530
1 Voltage specified shall be controlled to ±1 volt.
2 Temperatures shall be controlled to ±1 °C.