Service 13 / 15
POLARITY
TEST
Complete polarity testing services — verifying correct line, neutral, and earth conductor connections at sockets, switches, distribution boards, and equipment terminals.
Overview
Correct
Connections — Always.
Polarity Testing confirms that line, neutral, and earth conductors are connected to the correct terminals throughout the installation — preventing dangerous reversed connections that could cause electric shock or equipment damage.
Our engineers perform polarity checks at socket outlets, switches, distribution boards, consumer units, and fixed equipment — using approved test instruments to verify correct conductor orientation.
Polarity testing is a mandatory verification step under BS 7671 — ensuring single-pole switches and protective devices are installed in the line conductor only, and that all connections are safe for operation.
Scope of Work
What We Deliver
Socket Outlet Polarity
Verification of correct line, neutral, and earth connections at all socket outlets.
Switch Polarity
Confirmation that single-pole switches are installed in the line conductor only.
Distribution Board Checks
Polarity verification at consumer units, distribution boards, and MCB terminals.
Equipment Terminals
Polarity checks at fixed equipment, motors, and control panel connections.
Documentation
Complete polarity test records with pass/fail status for every test point.
Compliance Certification
Certification confirming polarity compliance with BS 7671 requirements.
Why This Service
Safety
Starts with Polarity.
⚡
Prevents Electric Shock
Correct polarity eliminates risk of live terminals in sockets and switches.
🔧
Equipment Protection
Reversed polarity can damage sensitive equipment — testing prevents this.
✅
BS 7671 Compliance
Polarity testing is a mandatory requirement for all electrical installations.
Our Process
How We Deliver
Identify
Locate test points and circuits.
Test
Verify conductor polarity.
Verify
Confirm correct connections.
Certify
Issue compliance documentation.
Get a Quote
Need Polarity Testing?
Share your testing requirements and our team will respond with a tailored plan within 24 hours.