This was posted on another site and seems like good reading
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RVSafety
The Shocking Truth About RV’s
RV Electrical Safety: Part I – Volts
RV Electrical Safety: Part 2 - Meters
RV Electrical Safety: Part 3 - Outlets
RV Electrical Safety: Part 4 - Hot Skin
RV Electrical Safety: Part 5 - Amperage
RV Electrical Safety: Part 6 - Voltage Drop
RV Electrical Safety: Part 7 - Wattage
RV Electrical Safety: Part 8 - GFCI Theory
RV Electrical Safety: Part 9 - In Review
RV Electrical Safety: Part 10 - GFCI Testing
RV Electrical Safety: Part 11 - Extension Cords
RV Electrical Safety: Part 12 - Surge Strips
DIY testers and how to use them
30 amp DIY tester
50 amp DIY tester
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++=
If this is not correct or appropriate i will remove it, seems like good advice to me,ALTHO I am not an electrical guru
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
RVSafety
The Shocking Truth About RV’s
RV Electrical Safety: Part I – Volts
RV Electrical Safety: Part 2 - Meters
RV Electrical Safety: Part 3 - Outlets
RV Electrical Safety: Part 4 - Hot Skin
RV Electrical Safety: Part 5 - Amperage
RV Electrical Safety: Part 6 - Voltage Drop
RV Electrical Safety: Part 7 - Wattage
RV Electrical Safety: Part 8 - GFCI Theory
RV Electrical Safety: Part 9 - In Review
RV Electrical Safety: Part 10 - GFCI Testing
RV Electrical Safety: Part 11 - Extension Cords
RV Electrical Safety: Part 12 - Surge Strips
DIY testers and how to use them
30 amp DIY tester
50 amp DIY tester
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++=
If this is not correct or appropriate i will remove it, seems like good advice to me,ALTHO I am not an electrical guru