Okay, I understand what you're trying to do. You're essentially hot-wiring a piece of equipment (likely a HVAC or similar system that uses a CTD board - Control Time Delay board) to bypass a time delay and you're experimenting with how to best achieve this. Let's break down your question and considerations

Understanding Your Current Setup and Goal
Current Setup

You've removed T3 entirely and directly connected T1 and T2. This effectively eliminates the time delay that the CTD board was designed to provide.

Goal

You want to ensure that connecting T1 to all of T2 and T3 wouldn't cause any unintended issues and achieves the same bypass effect.

Caveat

You know you've essentially disabled the CTD board's intended function. This is a temporary measure while you wait for a replacement.

Analysis and Reasoning What are T1, T2, and T3? Since you've removed the time delay function, they most likely serve as a closed circuit in the original design when the time is up. Connecting T1 to T2 and T3 Simultaneously

In terms of functionality (bypassing the delay), connecting T1 to both T2 and T3 should achieve the same result as connecting T1 only to T2 (with T3 removed), assuming T2 and T3 were designed to eventually connect to T1 when the delay timer expires. In other words, T3 might just be another switch controlled by the delay timer. However, if T3 had an intermediary function that is now lost by removing it, that would cause a problem.

Why the 'Other Way' is Unlikely to Cause Issues (Generally)

Given that you're just connecting points designed to eventually connect in the normal operation, it's unlikely that directly connecting T1 to both T2 and T3 would cause damage. You're just doing what the timer would have done.

Potential Considerations (Caveats)



Current Draw

Extremely Important. Make sure your new arrangement doesn't cause a higher than expected current draw, which could blow a fuse or damage other components. This is rare in simple bypass scenarios, but it's crucial to check.

Voltage Compatibility

Less likely to be a problem since you're connecting points within the same circuit, but always be aware of voltage levels.

Load

Will the system be able to handle being constantly on like this? Is the load on the device to high and would need a time delay for it to cool down?

Recommendation and Precautions1. If it's currently working by connecting T1 and T2 only, and you understand the risks, leaving it as-is while you wait for the new CTD board is the safest option.2. If you want to test connecting T1 to both T2 and T3



Measure Current

Use a multimeter to measure the current draw in both configurations (T1 to T2 only vs. T1 to T2 and T3). If the current is significantly higher when connecting to both, revert to the original connection.

Monitor for Overheating

Check for any components that might be overheating after the modification.3.

Document Everything

Take pictures of your wiring before and after any changes. This will be invaluable when you go to install the replacement CTD board.4.

Use Proper Wiring Techniques

Ensure all connections are secure, properly insulated, and use appropriate wire gauges. Loose or poorly insulated connections can be a fire hazard.

In summary, connecting T1 to both T2 and T3 should be functionally equivalent, but always exercise caution, monitor the system, and be ready to revert to the original configuration if anything seems wrong. Be extremely careful and double check connections. Remember that bypassing safety features can introduce risks. Good luck with your replacement CTD board installation! Flag for review