Tankless Water Heater causing CFL to flicker

[chuckd83]

I have installed a tankless water heater to supply the house on a designated 60 amp circuit. When hot water is turned on, a fluorescent light flickers. The water heater is phase-phase 240v.

I initially thought this might be caused by harmonics, but after reading here, I suspect it's due to voltage drop. Was there a remediation for this? I would have posted to that forum, but it's closed.

 

[charlie b]

I am closing this thread, in accordance with the Forum?s rules. This Forum is intended to assist professional electricians, inspectors, engineers, and other members of the electrical industry in the performance of their job-related tasks. However, if you are not an electrician or an electrical contractor, then we are not permitted to help you perform your own electrical installation, troubleshooting, or repair work.

Welcome to the Forum, but please limit your involvement to aspects of the profession that relate to your involvement in the profession.

If I have misinterpreted the situation, if this is a design task that you are performing on behalf of your employer, or if the description "contractor" in your profile means that, in addition to being an engineer, you are also a licensed electrical contractor, then send me Private Message to explain the circumstances. I would gladly reopen the thread, and post an apology for the delay and the inconvenience.