No, it is not safe to attempt to repair an electric oven or any other electrical appliance without switching off the main power switch of the house. Working on electrical appliances while they are still connected to a live power source can be extremely dangerous and may result in electric shock or even electrocution.
Here are the reasons why you should always switch off the main power switch before attempting any repairs:
Electrocution Risk: Electric ovens operate at high voltage, and touching live electrical components can lead to severe electric shocks, which can be fatal.
Fire Hazard: Attempting to repair an electric oven without turning off the power increases the risk of causing a short circuit or electrical fire, especially if you accidentally touch exposed wires or components.
Damage to Appliance: Without disconnecting the power, you may inadvertently cause damage to the oven's internal components, which could lead to more extensive and costly repairs.
Voiding Warranty: Most manufacturers' warranties stipulate that any unauthorized repairs or tampering with the appliance while it is under warranty will void the warranty coverage.
To safely repair an electric oven:
Turn Off Power: Always switch off the main power switch of the house before attempting any repairs. You can also unplug the oven from the electrical outlet for an extra level of safety.
Use Proper Tools and Safety Equipment: When working on electrical appliances, use appropriate tools and wear safety equipment like insulated gloves and safety goggles.
Consult a Professional: If you are not experienced or comfortable with electrical repairs, it is best to consult a qualified appliance repair technician. They have the knowledge and tools to safely diagnose and fix the issue.
Follow Service Manual: If you are a skilled DIYer and have the service manual for your specific oven model, follow the provided safety guidelines and instructions carefully.
Remember, safety should always be the top priority when dealing with electricity and electrical appliances. If you're unsure about any aspect of repairing an electric oven, it's best to seek professional help to avoid accidents and ensure the job is done correctly.