When I upgraded from a wimpy 60 amp main electric panel (Murray brand) to a brand new, 200 amp Square D QO series panel, I was happy as a clam.
I am still happy with it, but given the chance to do it again, I would make slightly different choices. I am outlining them here in hopes that you would not repeat my mistakes.
Tip # 1 – Time of Year
Whenever possible, pick a nice hot day to upgrade your panel. Thick electric cables (or even 20 amp wires) become bearable to work with during hot summer days.
Unfortunately, I chose to upgrade my panel in January (on one of the coldest days) and I saw electrician struggle with just peeling service entrance wire sheathing. I am sure the whole job took lot longer than necessary too.
Tip # 2 – Main Disconnect
I should have paid extra $100 to install a main disconnect right next to the main panel (with its own main breaker).
What I did not realize the at time was that even with the main panel breaker off, the lugs attached to service entrance cables were still energized. Although I am comfortable working with inside wiring at this point, but from a safety perspective, it would have preferable to have the ability to completely shutoff electricity feeding into the main panel.
Tip # 3 – Service Entrance Cable Routing
My electrician asked me if I wanted to mount the panel upside-down due to to the Power Company’s (POCO) meter being directly opposite of the main panel location. Confused, I just told him to install it the correct way (with the main breaker being on the top).
What I realized later (too late) was that my decision meant a large chunk of space inside (left) was now taken over by three very thick service entrance cables.
I like to even the load by installing approximately equal number of circuit breakers per side but these thick service entrance cables make that task very difficult.
That’s about it from me. You situation will be different than mine so make sure to discuss any questions with your electrician BEFORE you sign that contract.
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