A 6A 3-gang light switch is generally rated for a total of 6 amps across all gangs, not 6 amps per gang.

Here's why, and what would happen in your scenario: Internal Wiring and Contacts

The internal wiring and contacts within the switch are sized based on the overall amperage rating. They are designed to handle a specific amount of current without overheating or failing. If each gang could handle 6 amps individually, the internal components would need to be much more robust and expensive.

Your Scenario (3A + 2A + 4A = 9A)

In your example, you're drawing a total of 9 amps (3A + 2A + 4A) through a switch that is rated for 6 amps. This is an

overload condition. Likely Consequences



Overheating

The switch will likely overheat. The internal wiring and contacts will generate excessive heat due to the higher-than-rated current flow.

Damage to the Switch

The overheating can damage the switch, melting plastic components, causing the contacts to degrade, or even causing the switch to fuse internally.

Fire Hazard

In a worst-case scenario, the overheating could lead to a fire.

Nuisance Tripping

If the circuit is protected by a breaker, it should trip to prevent damage. This would be a major nuisance if it occurs regularly.

In Summary



No, a 6A 3-gang light switch cannot safely support 6 amps on all three gangs simultaneously if the total current exceeds 6 amps. You're exceeding the switch's rated capacity in your scenario, which will likely damage the switch and could create a fire hazard. It is extremely dangerous to run more amps through the switch than it is rated for.

Important Considerations



Local Electrical Codes

Always follow your local electrical codes.

Professional Advice

If you're unsure about electrical work, consult a qualified electrician.

Upgrading

If you need to switch higher currents, use a switch with a higher amperage rating or consider using multiple switches.

LED Lights

If you're using incandescent bulbs, consider switching to LED bulbs to reduce the amperage draw. LEDs consume significantly less power for the same light output.

Check Markings

Always check the markings on the switch itself. Look for the voltage and amperage rating.

Therefore, in your described scenario, you will damage the switch, and it is highly recommended to not overload the switch in this way. Flag for review