POLARITY RECORD DSR 01 016a v11.0

Area / SPN / EPN / LPN / DCD / Powercare / Other
Job Reference No. / Delete as appropriate: / Fault / Planned
Address:
Earthing type: / TT / PME
TN-C / SNE
TN-S
Direct Earth / Other / Meter Number:
Cut-out type: / Single Phase / Split Phase / Three Phase / Other
Fuse size: / 60A / 80A / 100A / Other
If OTHER has been selected please specify:
Checklist for Polarity Testing
(*delete as appropriate) / Pre-work / Restoration or New / N/A
û / Extra Information
Prior to Cut-out fuse removal / Socket tests / Non PME Tester
(Socket and See) / Yes/No* / Correct/Incorrect*
PME Tester
(Tru-pol) / Yes/No* / Correct/Incorrect*
Check consumer units / Yes/No* / Correct/Incorrect*
Check meter tails / Yes/No* / Correct/Incorrect*
Check cut-out / Yes/No* / Correct/Incorrect*
After Cut-out fuse removal / Check Polarity at cut-out / Yes/No* / Correct/Incorrect*
Remove/replace customer’s neutral & earth connection / Yes/No* / Correct/Incorrect*
Check for healthy supply at cut-out with test lamp / Yes/No* / Correct/Incorrect*
Measure & record values / Pre-work value / Restoration or New value
Supply voltage / Volts / Volts
Earth Loop Impedance
(See over for Earth Fault Loop impedance flow chart) / Ohms / Ohms
Phase Rotation
(State Direction)
Cut-out fuse carrier and meter sealed / Pre-work
Remove fuse / Restoration or New
Install fuse
ALL conductors have been replaced and checked for tightness / Yes / No / N/A
**ONE FORM TO BE USED FOR BOTH PRE WORK AND RESTORATION **
Pre-work / Restoration or New
Date:
Time:
Name:
Signature:

If unsure refer to DSR 01 016 – How to ensure LV customers have correct polarity and phase rotation

If the values in the table below cannot be reached then the flowchart is used with reference to

Earth Terminal / 230V 1Æ
Up to 100A / 400V 3Æ
Up to 100A / 400V 3Æ
200A to 300A / 400V 3Æ
Exceeding 300A
PME/PNB / 0.35W / 0.35W / 0.2W / 0.15W
Cable Sheath/Continuous Earth Wire / 0.8W / 0.8W

EDS 06-0004 Earth Fault Loop Impedance Requirements.