SRCelectronics PAT Calc Tool V1.0a

PatCalc V1.0a

⏚ Earth Limit Calculator
CSA	0.5 0.75 1.0 1.25 1.5 2.5 4.0
Length	1 m 2 m 3 m 5 m 6 m 7.5 m 10 m 15 m 20 m 25 m 30 m 35 m 40 m 45 m 50 m 55 m 60 m 65 m 70 m 75 m 80 m 85 m 90 m 95 m 100 m 110 m 120 m 130 m 140 m 150 m 175 m 200 m 250 m
Earth Limit	Ω

A handy cheat-sheet for the common lengths of mains cable used in live events and theatre.

I wrote this with some help from Copilot… SRCelectronics cannot be held responsible for any error or discrepancy - use this entirely at your own risk.

The limit for the Earth Continuity Test is (0.1 + R)Ω.
Where the R value is the resistance of the protective conductor (earth wire) within the supply cable.
See Table V1.1 in the IET Code of Practice for more info.

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Electronics design & repair and PAT Testing for events, theatre & small businesses. Serving Dundee, Angus, Glasgow, Twickenham, Woking & Weybridge.